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authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-07 18:39:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-07 18:39:37 -0700
commit68abbe729567cef128b2c2141f2ed2567f3b8372 (patch)
treeaa75c39cc815eee4d7cc8db2988fe10879fccd3e /fs
parentba1b7309fc2e909a5828c36a7cd187e5d7df6f53 (diff)
parent016e92da037e0b43dd5e5848c19b0b9749506963 (diff)
downloadlinux-0-day-master.tar.gz
linux-0-day-master.tar.xz
Merge branch 'akpm' (patches from Andrew)HEADmaster
Merge updates from Andrew Morton: - a few misc things - ocfs2 updates - v9fs updates - MM - procfs updates - lib/ updates - autofs updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) autofs: small cleanup in autofs_getpath() autofs: clean up includes autofs: comment on selinux changes needed for module autoload autofs: update MAINTAINERS entry for autofs autofs: use autofs instead of autofs4 in documentation autofs: rename autofs documentation files autofs: create autofs Kconfig and Makefile autofs: delete fs/autofs4 source files autofs: update fs/autofs4/Makefile autofs: update fs/autofs4/Kconfig autofs: copy autofs4 to autofs autofs4: use autofs instead of autofs4 everywhere autofs4: merge auto_fs.h and auto_fs4.h fs/binfmt_misc.c: do not allow offset overflow checkpatch: improve patch recognition lib/ucs2_string.c: add MODULE_LICENSE() lib/mpi: headers cleanup lib/percpu_ida.c: use _irqsave() instead of local_irq_save() + spin_lock lib/idr.c: remove simple_ida_lock lib/bitmap.c: micro-optimization for __bitmap_complement() ...
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/v9fs.c29
-rw-r--r--fs/Kconfig4
-rw-r--r--fs/Makefile1
-rw-r--r--fs/autofs/Kconfig20
-rw-r--r--fs/autofs/Makefile7
-rw-r--r--fs/autofs/autofs_i.h (renamed from fs/autofs4/autofs_i.h)92
-rw-r--r--fs/autofs/dev-ioctl.c (renamed from fs/autofs4/dev-ioctl.c)31
-rw-r--r--fs/autofs/expire.c (renamed from fs/autofs4/expire.c)133
-rw-r--r--fs/autofs/init.c (renamed from fs/autofs4/init.c)12
-rw-r--r--fs/autofs/inode.c (renamed from fs/autofs4/inode.c)54
-rw-r--r--fs/autofs/root.c (renamed from fs/autofs4/root.c)277
-rw-r--r--fs/autofs/symlink.c (renamed from fs/autofs4/symlink.c)16
-rw-r--r--fs/autofs/waitq.c (renamed from fs/autofs4/waitq.c)59
-rw-r--r--fs/autofs4/Kconfig46
-rw-r--r--fs/autofs4/Makefile4
-rw-r--r--fs/binfmt_misc.c12
-rw-r--r--fs/compat_ioctl.c2
-rw-r--r--fs/dax.c78
-rw-r--r--fs/fcntl.c2
-rw-r--r--fs/ocfs2/dlmglue.c119
-rw-r--r--fs/ocfs2/dlmglue.h1
-rw-r--r--fs/ocfs2/file.c10
-rw-r--r--fs/ocfs2/file.h2
-rw-r--r--fs/ocfs2/ioctl.c2
-rw-r--r--fs/ocfs2/mmap.c44
-rw-r--r--fs/ocfs2/namei.c3
-rw-r--r--fs/ocfs2/ocfs2_fs.h8
-rw-r--r--fs/proc/array.c2
-rw-r--r--fs/proc/base.c134
-rw-r--r--fs/proc/fd.c2
-rw-r--r--fs/proc/internal.h2
-rw-r--r--fs/proc/page.c2
-rw-r--r--fs/proc/task_mmu.c26
-rw-r--r--fs/userfaultfd.c22
34 files changed, 668 insertions, 590 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index e622f0f10502..0429c8ee58f1 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -210,12 +210,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
p9_debug(P9_DEBUG_ERROR,
"integer field, but no integer?\n");
ret = r;
- continue;
- }
- v9ses->debug = option;
+ } else {
+ v9ses->debug = option;
#ifdef CONFIG_NET_9P_DEBUG
- p9_debug_level = option;
+ p9_debug_level = option;
#endif
+ }
break;
case Opt_dfltuid:
@@ -231,7 +231,6 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
p9_debug(P9_DEBUG_ERROR,
"uid field, but not a uid?\n");
ret = -EINVAL;
- continue;
}
break;
case Opt_dfltgid:
@@ -247,7 +246,6 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
p9_debug(P9_DEBUG_ERROR,
"gid field, but not a gid?\n");
ret = -EINVAL;
- continue;
}
break;
case Opt_afid:
@@ -256,9 +254,9 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
p9_debug(P9_DEBUG_ERROR,
"integer field, but no integer?\n");
ret = r;
- continue;
+ } else {
+ v9ses->afid = option;
}
- v9ses->afid = option;
break;
case Opt_uname:
kfree(v9ses->uname);
@@ -306,13 +304,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
"problem allocating copy of cache arg\n");
goto free_and_return;
}
- ret = get_cache_mode(s);
- if (ret == -EINVAL) {
- kfree(s);
- goto free_and_return;
- }
+ r = get_cache_mode(s);
+ if (r < 0)
+ ret = r;
+ else
+ v9ses->cache = r;
- v9ses->cache = ret;
kfree(s);
break;
@@ -341,14 +338,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
pr_info("Unknown access argument %s\n",
s);
kfree(s);
- goto free_and_return;
+ continue;
}
v9ses->uid = make_kuid(current_user_ns(), uid);
if (!uid_valid(v9ses->uid)) {
ret = -EINVAL;
pr_info("Uknown uid %s\n", s);
- kfree(s);
- goto free_and_return;
}
}
diff --git a/fs/Kconfig b/fs/Kconfig
index ac4ac908f001..40cdae75e3b4 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -108,6 +108,7 @@ source "fs/notify/Kconfig"
source "fs/quota/Kconfig"
+source "fs/autofs/Kconfig"
source "fs/autofs4/Kconfig"
source "fs/fuse/Kconfig"
source "fs/overlayfs/Kconfig"
@@ -203,6 +204,9 @@ config HUGETLBFS
config HUGETLB_PAGE
def_bool HUGETLBFS
+config MEMFD_CREATE
+ def_bool TMPFS || HUGETLBFS
+
config ARCH_HAS_GIGANTIC_PAGE
bool
diff --git a/fs/Makefile b/fs/Makefile
index c9375fd2c8c4..2e005525cc19 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -102,6 +102,7 @@ obj-$(CONFIG_AFFS_FS) += affs/
obj-$(CONFIG_ROMFS_FS) += romfs/
obj-$(CONFIG_QNX4FS_FS) += qnx4/
obj-$(CONFIG_QNX6FS_FS) += qnx6/
+obj-$(CONFIG_AUTOFS_FS) += autofs/
obj-$(CONFIG_AUTOFS4_FS) += autofs4/
obj-$(CONFIG_ADFS_FS) += adfs/
obj-$(CONFIG_FUSE_FS) += fuse/
diff --git a/fs/autofs/Kconfig b/fs/autofs/Kconfig
new file mode 100644
index 000000000000..6a2064eb3b27
--- /dev/null
+++ b/fs/autofs/Kconfig
@@ -0,0 +1,20 @@
+config AUTOFS_FS
+ tristate "Kernel automounter support (supports v3, v4 and v5)"
+ default n
+ help
+ The automounter is a tool to automatically mount remote file systems
+ on demand. This implementation is partially kernel-based to reduce
+ overhead in the already-mounted case; this is unlike the BSD
+ automounter (amd), which is a pure user space daemon.
+
+ To use the automounter you need the user-space tools from
+ <https://www.kernel.org/pub/linux/daemons/autofs/>; you also want
+ to answer Y to "NFS file system support", below.
+
+ To compile this support as a module, choose M here: the module will be
+ called autofs.
+
+ If you are not a part of a fairly large, distributed network or
+ don't have a laptop which needs to dynamically reconfigure to the
+ local network, you probably do not need an automounter, and can say
+ N here.
diff --git a/fs/autofs/Makefile b/fs/autofs/Makefile
new file mode 100644
index 000000000000..43fedde15c26
--- /dev/null
+++ b/fs/autofs/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the linux autofs-filesystem routines.
+#
+
+obj-$(CONFIG_AUTOFS_FS) += autofs.o
+
+autofs-objs := init.o inode.o root.o symlink.o waitq.o expire.o dev-ioctl.o
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs/autofs_i.h
index 4737615f0eaa..9400a9f6318a 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs/autofs_i.h
@@ -9,7 +9,7 @@
/* Internal header file for autofs */
-#include <linux/auto_fs4.h>
+#include <linux/auto_fs.h>
#include <linux/auto_dev-ioctl.h>
#include <linux/kernel.h>
@@ -25,7 +25,7 @@
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/completion.h>
-#include <asm/current.h>
+#include <linux/file.h>
/* This is the range of ioctl() numbers we claim as ours */
#define AUTOFS_IOC_FIRST AUTOFS_IOC_READY
@@ -122,44 +122,44 @@ struct autofs_sb_info {
struct rcu_head rcu;
};
-static inline struct autofs_sb_info *autofs4_sbi(struct super_block *sb)
+static inline struct autofs_sb_info *autofs_sbi(struct super_block *sb)
{
return (struct autofs_sb_info *)(sb->s_fs_info);
}
-static inline struct autofs_info *autofs4_dentry_ino(struct dentry *dentry)
+static inline struct autofs_info *autofs_dentry_ino(struct dentry *dentry)
{
return (struct autofs_info *)(dentry->d_fsdata);
}
-/* autofs4_oz_mode(): do we see the man behind the curtain? (The
+/* autofs_oz_mode(): do we see the man behind the curtain? (The
* processes which do manipulations for us in user space sees the raw
* filesystem without "magic".)
*/
-static inline int autofs4_oz_mode(struct autofs_sb_info *sbi)
+static inline int autofs_oz_mode(struct autofs_sb_info *sbi)
{
return sbi->catatonic || task_pgrp(current) == sbi->oz_pgrp;
}
-struct inode *autofs4_get_inode(struct super_block *, umode_t);
-void autofs4_free_ino(struct autofs_info *);
+struct inode *autofs_get_inode(struct super_block *, umode_t);
+void autofs_free_ino(struct autofs_info *);
/* Expiration */
-int is_autofs4_dentry(struct dentry *);
-int autofs4_expire_wait(const struct path *path, int rcu_walk);
-int autofs4_expire_run(struct super_block *, struct vfsmount *,
- struct autofs_sb_info *,
- struct autofs_packet_expire __user *);
-int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
- struct autofs_sb_info *sbi, int when);
-int autofs4_expire_multi(struct super_block *, struct vfsmount *,
- struct autofs_sb_info *, int __user *);
-struct dentry *autofs4_expire_direct(struct super_block *sb,
- struct vfsmount *mnt,
- struct autofs_sb_info *sbi, int how);
-struct dentry *autofs4_expire_indirect(struct super_block *sb,
- struct vfsmount *mnt,
- struct autofs_sb_info *sbi, int how);
+int is_autofs_dentry(struct dentry *);
+int autofs_expire_wait(const struct path *path, int rcu_walk);
+int autofs_expire_run(struct super_block *, struct vfsmount *,
+ struct autofs_sb_info *,
+ struct autofs_packet_expire __user *);
+int autofs_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
+ struct autofs_sb_info *sbi, int when);
+int autofs_expire_multi(struct super_block *, struct vfsmount *,
+ struct autofs_sb_info *, int __user *);
+struct dentry *autofs_expire_direct(struct super_block *sb,
+ struct vfsmount *mnt,
+ struct autofs_sb_info *sbi, int how);
+struct dentry *autofs_expire_indirect(struct super_block *sb,
+ struct vfsmount *mnt,
+ struct autofs_sb_info *sbi, int how);
/* Device node initialization */
@@ -168,11 +168,11 @@ void autofs_dev_ioctl_exit(void);
/* Operations structures */
-extern const struct inode_operations autofs4_symlink_inode_operations;
-extern const struct inode_operations autofs4_dir_inode_operations;
-extern const struct file_operations autofs4_dir_operations;
-extern const struct file_operations autofs4_root_operations;
-extern const struct dentry_operations autofs4_dentry_operations;
+extern const struct inode_operations autofs_symlink_inode_operations;
+extern const struct inode_operations autofs_dir_inode_operations;
+extern const struct file_operations autofs_dir_operations;
+extern const struct file_operations autofs_root_operations;
+extern const struct dentry_operations autofs_dentry_operations;
/* VFS automount flags management functions */
static inline void __managed_dentry_set_managed(struct dentry *dentry)
@@ -201,9 +201,9 @@ static inline void managed_dentry_clear_managed(struct dentry *dentry)
/* Initializing function */
-int autofs4_fill_super(struct super_block *, void *, int);
-struct autofs_info *autofs4_new_ino(struct autofs_sb_info *);
-void autofs4_clean_ino(struct autofs_info *);
+int autofs_fill_super(struct super_block *, void *, int);
+struct autofs_info *autofs_new_ino(struct autofs_sb_info *);
+void autofs_clean_ino(struct autofs_info *);
static inline int autofs_prepare_pipe(struct file *pipe)
{
@@ -218,25 +218,25 @@ static inline int autofs_prepare_pipe(struct file *pipe)
/* Queue management functions */
-int autofs4_wait(struct autofs_sb_info *,
+int autofs_wait(struct autofs_sb_info *,
const struct path *, enum autofs_notify);
-int autofs4_wait_release(struct autofs_sb_info *, autofs_wqt_t, int);
-void autofs4_catatonic_mode(struct autofs_sb_info *);
+int autofs_wait_release(struct autofs_sb_info *, autofs_wqt_t, int);
+void autofs_catatonic_mode(struct autofs_sb_info *);
-static inline u32 autofs4_get_dev(struct autofs_sb_info *sbi)
+static inline u32 autofs_get_dev(struct autofs_sb_info *sbi)
{
return new_encode_dev(sbi->sb->s_dev);
}
-static inline u64 autofs4_get_ino(struct autofs_sb_info *sbi)
+static inline u64 autofs_get_ino(struct autofs_sb_info *sbi)
{
return d_inode(sbi->sb->s_root)->i_ino;
}
-static inline void __autofs4_add_expiring(struct dentry *dentry)
+static inline void __autofs_add_expiring(struct dentry *dentry)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
if (ino) {
if (list_empty(&ino->expiring))
@@ -244,10 +244,10 @@ static inline void __autofs4_add_expiring(struct dentry *dentry)
}
}
-static inline void autofs4_add_expiring(struct dentry *dentry)
+static inline void autofs_add_expiring(struct dentry *dentry)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
if (ino) {
spin_lock(&sbi->lookup_lock);
@@ -257,10 +257,10 @@ static inline void autofs4_add_expiring(struct dentry *dentry)
}
}
-static inline void autofs4_del_expiring(struct dentry *dentry)
+static inline void autofs_del_expiring(struct dentry *dentry)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
if (ino) {
spin_lock(&sbi->lookup_lock);
@@ -270,4 +270,4 @@ static inline void autofs4_del_expiring(struct dentry *dentry)
}
}
-void autofs4_kill_sb(struct super_block *);
+void autofs_kill_sb(struct super_block *);
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs/dev-ioctl.c
index 26f6b4f41ce6..ea4ca1445ab7 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs/dev-ioctl.c
@@ -7,23 +7,10 @@
* option, any later version, incorporated herein by reference.
*/
-#include <linux/module.h>
-#include <linux/vmalloc.h>
#include <linux/miscdevice.h>
-#include <linux/init.h>
-#include <linux/wait.h>
-#include <linux/namei.h>
-#include <linux/fcntl.h>
-#include <linux/file.h>
-#include <linux/fdtable.h>
-#include <linux/sched.h>
-#include <linux/cred.h>
#include <linux/compat.h>
#include <linux/syscalls.h>
#include <linux/magic.h>
-#include <linux/dcache.h>
-#include <linux/uaccess.h>
-#include <linux/slab.h>
#include "autofs_i.h"
@@ -166,7 +153,7 @@ static struct autofs_sb_info *autofs_dev_ioctl_sbi(struct file *f)
if (f) {
inode = file_inode(f);
- sbi = autofs4_sbi(inode->i_sb);
+ sbi = autofs_sbi(inode->i_sb);
}
return sbi;
}
@@ -236,7 +223,7 @@ static int test_by_dev(const struct path *path, void *p)
static int test_by_type(const struct path *path, void *p)
{
- struct autofs_info *ino = autofs4_dentry_ino(path->dentry);
+ struct autofs_info *ino = autofs_dentry_ino(path->dentry);
return ino && ino->sbi->type & *(unsigned *)p;
}
@@ -324,7 +311,7 @@ static int autofs_dev_ioctl_ready(struct file *fp,
autofs_wqt_t token;
token = (autofs_wqt_t) param->ready.token;
- return autofs4_wait_release(sbi, token, 0);
+ return autofs_wait_release(sbi, token, 0);
}
/*
@@ -340,7 +327,7 @@ static int autofs_dev_ioctl_fail(struct file *fp,
token = (autofs_wqt_t) param->fail.token;
status = param->fail.status < 0 ? param->fail.status : -ENOENT;
- return autofs4_wait_release(sbi, token, status);
+ return autofs_wait_release(sbi, token, status);
}
/*
@@ -412,7 +399,7 @@ static int autofs_dev_ioctl_catatonic(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
- autofs4_catatonic_mode(sbi);
+ autofs_catatonic_mode(sbi);
return 0;
}
@@ -459,10 +446,10 @@ static int autofs_dev_ioctl_requester(struct file *fp,
if (err)
goto out;
- ino = autofs4_dentry_ino(path.dentry);
+ ino = autofs_dentry_ino(path.dentry);
if (ino) {
err = 0;
- autofs4_expire_wait(&path, 0);
+ autofs_expire_wait(&path, 0);
spin_lock(&sbi->fs_lock);
param->requester.uid =
from_kuid_munged(current_user_ns(), ino->uid);
@@ -489,7 +476,7 @@ static int autofs_dev_ioctl_expire(struct file *fp,
how = param->expire.how;
mnt = fp->f_path.mnt;
- return autofs4_do_expire_multi(sbi->sb, mnt, sbi, how);
+ return autofs_do_expire_multi(sbi->sb, mnt, sbi, how);
}
/* Check if autofs mount point is in use */
@@ -686,7 +673,7 @@ static int _autofs_dev_ioctl(unsigned int command,
* Admin needs to be able to set the mount catatonic in
* order to be able to perform the re-open.
*/
- if (!autofs4_oz_mode(sbi) &&
+ if (!autofs_oz_mode(sbi) &&
cmd != AUTOFS_DEV_IOCTL_CATATONIC_CMD) {
err = -EACCES;
fput(fp);
diff --git a/fs/autofs4/expire.c b/fs/autofs/expire.c
index 57725d4a8c59..b332d3f6e730 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs/expire.c
@@ -13,10 +13,10 @@
static unsigned long now;
/* Check if a dentry can be expired */
-static inline int autofs4_can_expire(struct dentry *dentry,
- unsigned long timeout, int do_now)
+static inline int autofs_can_expire(struct dentry *dentry,
+ unsigned long timeout, int do_now)
{
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
/* dentry in the process of being deleted */
if (ino == NULL)
@@ -31,7 +31,7 @@ static inline int autofs4_can_expire(struct dentry *dentry,
}
/* Check a mount point for busyness */
-static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
+static int autofs_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
{
struct dentry *top = dentry;
struct path path = {.mnt = mnt, .dentry = dentry};
@@ -44,8 +44,8 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
if (!follow_down_one(&path))
goto done;
- if (is_autofs4_dentry(path.dentry)) {
- struct autofs_sb_info *sbi = autofs4_sbi(path.dentry->d_sb);
+ if (is_autofs_dentry(path.dentry)) {
+ struct autofs_sb_info *sbi = autofs_sbi(path.dentry->d_sb);
/* This is an autofs submount, we can't expire it */
if (autofs_type_indirect(sbi->type))
@@ -56,7 +56,7 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
if (!may_umount_tree(path.mnt)) {
struct autofs_info *ino;
- ino = autofs4_dentry_ino(top);
+ ino = autofs_dentry_ino(top);
ino->last_used = jiffies;
goto done;
}
@@ -74,7 +74,7 @@ done:
static struct dentry *get_next_positive_subdir(struct dentry *prev,
struct dentry *root)
{
- struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(root->d_sb);
struct list_head *next;
struct dentry *q;
@@ -121,7 +121,7 @@ cont:
static struct dentry *get_next_positive_dentry(struct dentry *prev,
struct dentry *root)
{
- struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(root->d_sb);
struct list_head *next;
struct dentry *p, *ret;
@@ -184,10 +184,10 @@ again:
* The tree is not busy iff no mountpoints are busy and there are no
* autofs submounts.
*/
-static int autofs4_direct_busy(struct vfsmount *mnt,
- struct dentry *top,
- unsigned long timeout,
- int do_now)
+static int autofs_direct_busy(struct vfsmount *mnt,
+ struct dentry *top,
+ unsigned long timeout,
+ int do_now)
{
pr_debug("top %p %pd\n", top, top);
@@ -195,14 +195,14 @@ static int autofs4_direct_busy(struct vfsmount *mnt,
if (!may_umount_tree(mnt)) {
struct autofs_info *ino;
- ino = autofs4_dentry_ino(top);
+ ino = autofs_dentry_ino(top);
if (ino)
ino->last_used = jiffies;
return 1;
}
/* Timeout of a direct mount is determined by its top dentry */
- if (!autofs4_can_expire(top, timeout, do_now))
+ if (!autofs_can_expire(top, timeout, do_now))
return 1;
return 0;
@@ -212,12 +212,12 @@ static int autofs4_direct_busy(struct vfsmount *mnt,
* Check a directory tree of mount points for busyness
* The tree is not busy iff no mountpoints are busy
*/
-static int autofs4_tree_busy(struct vfsmount *mnt,
- struct dentry *top,
- unsigned long timeout,
- int do_now)
+static int autofs_tree_busy(struct vfsmount *mnt,
+ struct dentry *top,
+ unsigned long timeout,
+ int do_now)
{
- struct autofs_info *top_ino = autofs4_dentry_ino(top);
+ struct autofs_info *top_ino = autofs_dentry_ino(top);
struct dentry *p;
pr_debug("top %p %pd\n", top, top);
@@ -237,13 +237,13 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
* If the fs is busy update the expiry counter.
*/
if (d_mountpoint(p)) {
- if (autofs4_mount_busy(mnt, p)) {
+ if (autofs_mount_busy(mnt, p)) {
top_ino->last_used = jiffies;
dput(p);
return 1;
}
} else {
- struct autofs_info *ino = autofs4_dentry_ino(p);
+ struct autofs_info *ino = autofs_dentry_ino(p);
unsigned int ino_count = atomic_read(&ino->count);
/* allow for dget above and top is already dgot */
@@ -261,16 +261,16 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
}
/* Timeout of a tree mount is ultimately determined by its top dentry */
- if (!autofs4_can_expire(top, timeout, do_now))
+ if (!autofs_can_expire(top, timeout, do_now))
return 1;
return 0;
}
-static struct dentry *autofs4_check_leaves(struct vfsmount *mnt,
- struct dentry *parent,
- unsigned long timeout,
- int do_now)
+static struct dentry *autofs_check_leaves(struct vfsmount *mnt,
+ struct dentry *parent,
+ unsigned long timeout,
+ int do_now)
{
struct dentry *p;
@@ -282,11 +282,11 @@ static struct dentry *autofs4_check_leaves(struct vfsmount *mnt,
if (d_mountpoint(p)) {
/* Can we umount this guy */
- if (autofs4_mount_busy(mnt, p))
+ if (autofs_mount_busy(mnt, p))
continue;
/* Can we expire this guy */
- if (autofs4_can_expire(p, timeout, do_now))
+ if (autofs_can_expire(p, timeout, do_now))
return p;
}
}
@@ -294,10 +294,10 @@ static struct dentry *autofs4_check_leaves(struct vfsmount *mnt,
}
/* Check if we can expire a direct mount (possibly a tree) */
-struct dentry *autofs4_expire_direct(struct super_block *sb,
- struct vfsmount *mnt,
- struct autofs_sb_info *sbi,
- int how)
+struct dentry *autofs_expire_direct(struct super_block *sb,
+ struct vfsmount *mnt,
+ struct autofs_sb_info *sbi,
+ int how)
{
unsigned long timeout;
struct dentry *root = dget(sb->s_root);
@@ -310,9 +310,9 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
now = jiffies;
timeout = sbi->exp_timeout;
- if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
+ if (!autofs_direct_busy(mnt, root, timeout, do_now)) {
spin_lock(&sbi->fs_lock);
- ino = autofs4_dentry_ino(root);
+ ino = autofs_dentry_ino(root);
/* No point expiring a pending mount */
if (ino->flags & AUTOFS_INF_PENDING) {
spin_unlock(&sbi->fs_lock);
@@ -321,7 +321,7 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
ino->flags |= AUTOFS_INF_WANT_EXPIRE;
spin_unlock(&sbi->fs_lock);
synchronize_rcu();
- if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
+ if (!autofs_direct_busy(mnt, root, timeout, do_now)) {
spin_lock(&sbi->fs_lock);
ino->flags |= AUTOFS_INF_EXPIRING;
init_completion(&ino->expire_complete);
@@ -350,7 +350,7 @@ static struct dentry *should_expire(struct dentry *dentry,
{
int do_now = how & AUTOFS_EXP_IMMEDIATE;
int exp_leaves = how & AUTOFS_EXP_LEAVES;
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
unsigned int ino_count;
/* No point expiring a pending mount */
@@ -367,11 +367,11 @@ static struct dentry *should_expire(struct dentry *dentry,
pr_debug("checking mountpoint %p %pd\n", dentry, dentry);
/* Can we umount this guy */
- if (autofs4_mount_busy(mnt, dentry))
+ if (autofs_mount_busy(mnt, dentry))
return NULL;
/* Can we expire this guy */
- if (autofs4_can_expire(dentry, timeout, do_now))
+ if (autofs_can_expire(dentry, timeout, do_now))
return dentry;
return NULL;
}
@@ -382,7 +382,7 @@ static struct dentry *should_expire(struct dentry *dentry,
* A symlink can't be "busy" in the usual sense so
* just check last used for expire timeout.
*/
- if (autofs4_can_expire(dentry, timeout, do_now))
+ if (autofs_can_expire(dentry, timeout, do_now))
return dentry;
return NULL;
}
@@ -397,7 +397,7 @@ static struct dentry *should_expire(struct dentry *dentry,
if (d_count(dentry) > ino_count)
return NULL;
- if (!autofs4_tree_busy(mnt, dentry, timeout, do_now))
+ if (!autofs_tree_busy(mnt, dentry, timeout, do_now))
return dentry;
/*
* Case 3: pseudo direct mount, expire individual leaves
@@ -411,7 +411,7 @@ static struct dentry *should_expire(struct dentry *dentry,
if (d_count(dentry) > ino_count)
return NULL;
- expired = autofs4_check_leaves(mnt, dentry, timeout, do_now);
+ expired = autofs_check_leaves(mnt, dentry, timeout, do_now);
if (expired) {
if (expired == dentry)
dput(dentry);
@@ -427,10 +427,10 @@ static struct dentry *should_expire(struct dentry *dentry,
* - it is unused by any user process
* - it has been unused for exp_timeout time
*/
-struct dentry *autofs4_expire_indirect(struct super_block *sb,
- struct vfsmount *mnt,
- struct autofs_sb_info *sbi,
- int how)
+struct dentry *autofs_expire_indirect(struct super_block *sb,
+ struct vfsmount *mnt,
+ struct autofs_sb_info *sbi,
+ int how)
{
unsigned long timeout;
struct dentry *root = sb->s_root;
@@ -450,7 +450,7 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
int flags = how;
spin_lock(&sbi->fs_lock);
- ino = autofs4_dentry_ino(dentry);
+ ino = autofs_dentry_ino(dentry);
if (ino->flags & AUTOFS_INF_WANT_EXPIRE) {
spin_unlock(&sbi->fs_lock);
continue;
@@ -462,7 +462,7 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
continue;
spin_lock(&sbi->fs_lock);
- ino = autofs4_dentry_ino(expired);
+ ino = autofs_dentry_ino(expired);
ino->flags |= AUTOFS_INF_WANT_EXPIRE;
spin_unlock(&sbi->fs_lock);
synchronize_rcu();
@@ -498,11 +498,11 @@ found:
return expired;
}
-int autofs4_expire_wait(const struct path *path, int rcu_walk)
+int autofs_expire_wait(const struct path *path, int rcu_walk)
{
struct dentry *dentry = path->dentry;
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
int status;
int state;
@@ -529,7 +529,7 @@ retry:
pr_debug("waiting for expire %p name=%pd\n", dentry, dentry);
- status = autofs4_wait(sbi, path, NFY_NONE);
+ status = autofs_wait(sbi, path, NFY_NONE);
wait_for_completion(&ino->expire_complete);
pr_debug("expire done status=%d\n", status);
@@ -545,10 +545,10 @@ retry:
}
/* Perform an expiry operation */
-int autofs4_expire_run(struct super_block *sb,
- struct vfsmount *mnt,
- struct autofs_sb_info *sbi,
- struct autofs_packet_expire __user *pkt_p)
+int autofs_expire_run(struct super_block *sb,
+ struct vfsmount *mnt,
+ struct autofs_sb_info *sbi,
+ struct autofs_packet_expire __user *pkt_p)
{
struct autofs_packet_expire pkt;
struct autofs_info *ino;
@@ -560,7 +560,7 @@ int autofs4_expire_run(struct super_block *sb,
pkt.hdr.proto_version = sbi->version;
pkt.hdr.type = autofs_ptype_expire;
- dentry = autofs4_expire_indirect(sb, mnt, sbi, 0);
+ dentry = autofs_expire_indirect(sb, mnt, sbi, 0);
if (!dentry)
return -EAGAIN;
@@ -573,7 +573,7 @@ int autofs4_expire_run(struct super_block *sb,
ret = -EFAULT;
spin_lock(&sbi->fs_lock);
- ino = autofs4_dentry_ino(dentry);
+ ino = autofs_dentry_ino(dentry);
/* avoid rapid-fire expire attempts if expiry fails */
ino->last_used = now;
ino->flags &= ~(AUTOFS_INF_EXPIRING|AUTOFS_INF_WANT_EXPIRE);
@@ -583,25 +583,25 @@ int autofs4_expire_run(struct super_block *sb,
return ret;
}
-int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
- struct autofs_sb_info *sbi, int when)
+int autofs_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
+ struct autofs_sb_info *sbi, int when)
{
struct dentry *dentry;
int ret = -EAGAIN;
if (autofs_type_trigger(sbi->type))
- dentry = autofs4_expire_direct(sb, mnt, sbi, when);
+ dentry = autofs_expire_direct(sb, mnt, sbi, when);
else
- dentry = autofs4_expire_indirect(sb, mnt, sbi, when);
+ dentry = autofs_expire_indirect(sb, mnt, sbi, when);
if (dentry) {
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
const struct path path = { .mnt = mnt, .dentry = dentry };
/* This is synchronous because it makes the daemon a
* little easier
*/
- ret = autofs4_wait(sbi, &path, NFY_EXPIRE);
+ ret = autofs_wait(sbi, &path, NFY_EXPIRE);
spin_lock(&sbi->fs_lock);
/* avoid rapid-fire expire attempts if expiry fails */
@@ -619,7 +619,7 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
* Call repeatedly until it returns -EAGAIN, meaning there's nothing
* more to be done.
*/
-int autofs4_expire_multi(struct super_block *sb, struct vfsmount *mnt,
+int autofs_expire_multi(struct super_block *sb, struct vfsmount *mnt,
struct autofs_sb_info *sbi, int __user *arg)
{
int do_now = 0;
@@ -627,6 +627,5 @@ int autofs4_expire_multi(struct super_block *sb, struct vfsmount *mnt,
if (arg && get_user(do_now, arg))
return -EFAULT;
- return autofs4_do_expire_multi(sb, mnt, sbi, do_now);
+ return autofs_do_expire_multi(sb, mnt, sbi, do_now);
}
-
diff --git a/fs/autofs4/init.c b/fs/autofs/init.c
index 8cf0e63389ae..16fb61315843 100644
--- a/fs/autofs4/init.c
+++ b/fs/autofs/init.c
@@ -13,18 +13,18 @@
static struct dentry *autofs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
{
- return mount_nodev(fs_type, flags, data, autofs4_fill_super);
+ return mount_nodev(fs_type, flags, data, autofs_fill_super);
}
static struct file_system_type autofs_fs_type = {
.owner = THIS_MODULE,
.name = "autofs",
.mount = autofs_mount,
- .kill_sb = autofs4_kill_sb,
+ .kill_sb = autofs_kill_sb,
};
MODULE_ALIAS_FS("autofs");
-static int __init init_autofs4_fs(void)
+static int __init init_autofs_fs(void)
{
int err;
@@ -37,12 +37,12 @@ static int __init init_autofs4_fs(void)
return err;
}
-static void __exit exit_autofs4_fs(void)
+static void __exit exit_autofs_fs(void)
{
autofs_dev_ioctl_exit();
unregister_filesystem(&autofs_fs_type);
}
-module_init(init_autofs4_fs)
-module_exit(exit_autofs4_fs)
+module_init(init_autofs_fs)
+module_exit(exit_autofs_fs)
MODULE_LICENSE("GPL");
diff --git a/fs/autofs4/inode.c b/fs/autofs/inode.c
index 09e7d68dff02..b51980fc274e 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs/inode.c
@@ -7,18 +7,14 @@
* option, any later version, incorporated herein by reference.
*/
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/file.h>
#include <linux/seq_file.h>
#include <linux/pagemap.h>
#include <linux/parser.h>
-#include <linux/bitops.h>
#include <linux/magic.h>
+
#include "autofs_i.h"
-#include <linux/module.h>
-struct autofs_info *autofs4_new_ino(struct autofs_sb_info *sbi)
+struct autofs_info *autofs_new_ino(struct autofs_sb_info *sbi)
{
struct autofs_info *ino;
@@ -32,21 +28,21 @@ struct autofs_info *autofs4_new_ino(struct autofs_sb_info *sbi)
return ino;
}
-void autofs4_clean_ino(struct autofs_info *ino)
+void autofs_clean_ino(struct autofs_info *ino)
{
ino->uid = GLOBAL_ROOT_UID;
ino->gid = GLOBAL_ROOT_GID;
ino->last_used = jiffies;
}
-void autofs4_free_ino(struct autofs_info *ino)
+void autofs_free_ino(struct autofs_info *ino)
{
kfree(ino);
}
-void autofs4_kill_sb(struct super_block *sb)
+void autofs_kill_sb(struct super_block *sb)
{
- struct autofs_sb_info *sbi = autofs4_sbi(sb);
+ struct autofs_sb_info *sbi = autofs_sbi(sb);
/*
* In the event of a failure in get_sb_nodev the superblock
@@ -56,7 +52,7 @@ void autofs4_kill_sb(struct super_block *sb)
*/
if (sbi) {
/* Free wait queues, close pipe */
- autofs4_catatonic_mode(sbi);
+ autofs_catatonic_mode(sbi);
put_pid(sbi->oz_pgrp);
}
@@ -66,9 +62,9 @@ void autofs4_kill_sb(struct super_block *sb)
kfree_rcu(sbi, rcu);
}
-static int autofs4_show_options(struct seq_file *m, struct dentry *root)
+static int autofs_show_options(struct seq_file *m, struct dentry *root)
{
- struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(root->d_sb);
struct inode *root_inode = d_inode(root->d_sb->s_root);
if (!sbi)
@@ -101,16 +97,16 @@ static int autofs4_show_options(struct seq_file *m, struct dentry *root)
return 0;
}
-static void autofs4_evict_inode(struct inode *inode)
+static void autofs_evict_inode(struct inode *inode)
{
clear_inode(inode);
kfree(inode->i_private);
}
-static const struct super_operations autofs4_sops = {
+static const struct super_operations autofs_sops = {
.statfs = simple_statfs,
- .show_options = autofs4_show_options,
- .evict_inode = autofs4_evict_inode,
+ .show_options = autofs_show_options,
+ .evict_inode = autofs_evict_inode,
};
enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto,
@@ -206,7 +202,7 @@ static int parse_options(char *options, int *pipefd, kuid_t *uid, kgid_t *gid,
return (*pipefd < 0);
}
-int autofs4_fill_super(struct super_block *s, void *data, int silent)
+int autofs_fill_super(struct super_block *s, void *data, int silent)
{
struct inode *root_inode;
struct dentry *root;
@@ -246,19 +242,19 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
s->s_magic = AUTOFS_SUPER_MAGIC;
- s->s_op = &autofs4_sops;
- s->s_d_op = &autofs4_dentry_operations;
+ s->s_op = &autofs_sops;
+ s->s_d_op = &autofs_dentry_operations;
s->s_time_gran = 1;
/*
* Get the root inode and dentry, but defer checking for errors.
*/
- ino = autofs4_new_ino(sbi);
+ ino = autofs_new_ino(sbi);
if (!ino) {
ret = -ENOMEM;
goto fail_free;
}
- root_inode = autofs4_get_inode(s, S_IFDIR | 0755);
+ root_inode = autofs_get_inode(s, S_IFDIR | 0755);
root = d_make_root(root_inode);
if (!root)
goto fail_ino;
@@ -305,8 +301,8 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
if (autofs_type_trigger(sbi->type))
__managed_dentry_set_managed(root);
- root_inode->i_fop = &autofs4_root_operations;
- root_inode->i_op = &autofs4_dir_inode_operations;
+ root_inode->i_fop = &autofs_root_operations;
+ root_inode->i_op = &autofs_dir_inode_operations;
pr_debug("pipe fd = %d, pgrp = %u\n", pipefd, pid_nr(sbi->oz_pgrp));
pipe = fget(pipefd);
@@ -340,14 +336,14 @@ fail_dput:
dput(root);
goto fail_free;
fail_ino:
- autofs4_free_ino(ino);
+ autofs_free_ino(ino);
fail_free:
kfree(sbi);
s->s_fs_info = NULL;
return ret;
}
-struct inode *autofs4_get_inode(struct super_block *sb, umode_t mode)
+struct inode *autofs_get_inode(struct super_block *sb, umode_t mode)
{
struct inode *inode = new_inode(sb);
@@ -364,10 +360,10 @@ struct inode *autofs4_get_inode(struct super_block *sb, umode_t mode)
if (S_ISDIR(mode)) {
set_nlink(inode, 2);
- inode->i_op = &autofs4_dir_inode_operations;
- inode->i_fop = &autofs4_dir_operations;
+ inode->i_op = &autofs_dir_inode_operations;
+ inode->i_fop = &autofs_dir_operations;
} else if (S_ISLNK(mode)) {
- inode->i_op = &autofs4_symlink_inode_operations;
+ inode->i_op = &autofs_symlink_inode_operations;
} else
WARN_ON(1);
diff --git a/fs/autofs4/root.c b/fs/autofs/root.c
index b12e37f27530..a3d414150578 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs/root.c
@@ -9,72 +9,66 @@
*/
#include <linux/capability.h>
-#include <linux/errno.h>
-#include <linux/stat.h>
-#include <linux/slab.h>
-#include <linux/param.h>
-#include <linux/time.h>
#include <linux/compat.h>
-#include <linux/mutex.h>
#include "autofs_i.h"
-static int autofs4_dir_symlink(struct inode *, struct dentry *, const char *);
-static int autofs4_dir_unlink(struct inode *, struct dentry *);
-static int autofs4_dir_rmdir(struct inode *, struct dentry *);
-static int autofs4_dir_mkdir(struct inode *, struct dentry *, umode_t);
-static long autofs4_root_ioctl(struct file *, unsigned int, unsigned long);
+static int autofs_dir_symlink(struct inode *, struct dentry *, const char *);
+static int autofs_dir_unlink(struct inode *, struct dentry *);
+static int autofs_dir_rmdir(struct inode *, struct dentry *);
+static int autofs_dir_mkdir(struct inode *, struct dentry *, umode_t);
+static long autofs_root_ioctl(struct file *, unsigned int, unsigned long);
#ifdef CONFIG_COMPAT
-static long autofs4_root_compat_ioctl(struct file *,
- unsigned int, unsigned long);
+static long autofs_root_compat_ioctl(struct file *,
+ unsigned int, unsigned long);
#endif
-static int autofs4_dir_open(struct inode *inode, struct file *file);
-static struct dentry *autofs4_lookup(struct inode *,
- struct dentry *, unsigned int);
-static struct vfsmount *autofs4_d_automount(struct path *);
-static int autofs4_d_manage(const struct path *, bool);
-static void autofs4_dentry_release(struct dentry *);
-
-const struct file_operations autofs4_root_operations = {
+static int autofs_dir_open(struct inode *inode, struct file *file);
+static struct dentry *autofs_lookup(struct inode *,
+ struct dentry *, unsigned int);
+static struct vfsmount *autofs_d_automount(struct path *);
+static int autofs_d_manage(const struct path *, bool);
+static void autofs_dentry_release(struct dentry *);
+
+const struct file_operations autofs_root_operations = {
.open = dcache_dir_open,
.release = dcache_dir_close,
.read = generic_read_dir,
.iterate_shared = dcache_readdir,
.llseek = dcache_dir_lseek,
- .unlocked_ioctl = autofs4_root_ioctl,
+ .unlocked_ioctl = autofs_root_ioctl,
#ifdef CONFIG_COMPAT
- .compat_ioctl = autofs4_root_compat_ioctl,
+ .compat_ioctl = autofs_root_compat_ioctl,
#endif
};
-const struct file_operations autofs4_dir_operations = {
- .open = autofs4_dir_open,
+const struct file_operations autofs_dir_operations = {
+ .open = autofs_dir_open,
.release = dcache_dir_close,
.read = generic_read_dir,
.iterate_shared = dcache_readdir,
.llseek = dcache_dir_lseek,
};
-const struct inode_operations autofs4_dir_inode_operations = {
- .lookup = autofs4_lookup,
- .unlink = autofs4_dir_unlink,
- .symlink = autofs4_dir_symlink,
- .mkdir = autofs4_dir_mkdir,
- .rmdir = autofs4_dir_rmdir,
+const struct inode_operations autofs_dir_inode_operations = {
+ .lookup = autofs_lookup,
+ .unlink = autofs_dir_unlink,
+ .symlink = autofs_dir_symlink,
+ .mkdir = autofs_dir_mkdir,
+ .rmdir = autofs_dir_rmdir,
};
-const struct dentry_operations autofs4_dentry_operations = {
- .d_automount = autofs4_d_automount,
- .d_manage = autofs4_d_manage,
- .d_release = autofs4_dentry_release,
+const struct dentry_operations autofs_dentry_operations = {
+ .d_automount = autofs_d_automount,
+ .d_manage = autofs_d_manage,
+ .d_release = autofs_dentry_release,
};
-static void autofs4_add_active(struct dentry *dentry)
+static void autofs_add_active(struct dentry *dentry)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
struct autofs_info *ino;
- ino = autofs4_dentry_ino(dentry);
+ ino = autofs_dentry_ino(dentry);
if (ino) {
spin_lock(&sbi->lookup_lock);
if (!ino->active_count) {
@@ -86,12 +80,12 @@ static void autofs4_add_active(struct dentry *dentry)
}
}
-static void autofs4_del_active(struct dentry *dentry)
+static void autofs_del_active(struct dentry *dentry)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
struct autofs_info *ino;
- ino = autofs4_dentry_ino(dentry);
+ ino = autofs_dentry_ino(dentry);
if (ino) {
spin_lock(&sbi->lookup_lock);
ino->active_count--;
@@ -103,14 +97,14 @@ static void autofs4_del_active(struct dentry *dentry)
}
}
-static int autofs4_dir_open(struct inode *inode, struct file *file)
+static int autofs_dir_open(struct inode *inode, struct file *file)
{
struct dentry *dentry = file->f_path.dentry;
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
pr_debug("file=%p dentry=%p %pd\n", file, dentry, dentry);
- if (autofs4_oz_mode(sbi))
+ if (autofs_oz_mode(sbi))
goto out;
/*
@@ -133,10 +127,10 @@ out:
return dcache_dir_open(inode, file);
}
-static void autofs4_dentry_release(struct dentry *de)
+static void autofs_dentry_release(struct dentry *de)
{
- struct autofs_info *ino = autofs4_dentry_ino(de);
- struct autofs_sb_info *sbi = autofs4_sbi(de->d_sb);
+ struct autofs_info *ino = autofs_dentry_ino(de);
+ struct autofs_sb_info *sbi = autofs_sbi(de->d_sb);
pr_debug("releasing %p\n", de);
@@ -152,12 +146,12 @@ static void autofs4_dentry_release(struct dentry *de)
spin_unlock(&sbi->lookup_lock);
}
- autofs4_free_ino(ino);
+ autofs_free_ino(ino);
}
-static struct dentry *autofs4_lookup_active(struct dentry *dentry)
+static struct dentry *autofs_lookup_active(struct dentry *dentry)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
struct dentry *parent = dentry->d_parent;
const struct qstr *name = &dentry->d_name;
unsigned int len = name->len;
@@ -209,10 +203,10 @@ next:
return NULL;
}
-static struct dentry *autofs4_lookup_expiring(struct dentry *dentry,
- bool rcu_walk)
+static struct dentry *autofs_lookup_expiring(struct dentry *dentry,
+ bool rcu_walk)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
struct dentry *parent = dentry->d_parent;
const struct qstr *name = &dentry->d_name;
unsigned int len = name->len;
@@ -269,17 +263,17 @@ next:
return NULL;
}
-static int autofs4_mount_wait(const struct path *path, bool rcu_walk)
+static int autofs_mount_wait(const struct path *path, bool rcu_walk)
{
- struct autofs_sb_info *sbi = autofs4_sbi(path->dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(path->dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(path->dentry->d_sb);
+ struct autofs_info *ino = autofs_dentry_ino(path->dentry);
int status = 0;
if (ino->flags & AUTOFS_INF_PENDING) {
if (rcu_walk)
return -ECHILD;
pr_debug("waiting for mount name=%pd\n", path->dentry);
- status = autofs4_wait(sbi, path, NFY_MOUNT);
+ status = autofs_wait(sbi, path, NFY_MOUNT);
pr_debug("mount wait done status=%d\n", status);
}
ino->last_used = jiffies;
@@ -291,11 +285,11 @@ static int do_expire_wait(const struct path *path, bool rcu_walk)
struct dentry *dentry = path->dentry;
struct dentry *expiring;
- expiring = autofs4_lookup_expiring(dentry, rcu_walk);
+ expiring = autofs_lookup_expiring(dentry, rcu_walk);
if (IS_ERR(expiring))
return PTR_ERR(expiring);
if (!expiring)
- return autofs4_expire_wait(path, rcu_walk);
+ return autofs_expire_wait(path, rcu_walk);
else {
const struct path this = { .mnt = path->mnt, .dentry = expiring };
/*
@@ -303,17 +297,17 @@ static int do_expire_wait(const struct path *path, bool rcu_walk)
* be quite complete, but the directory has been removed
* so it must have been successful, just wait for it.
*/
- autofs4_expire_wait(&this, 0);
- autofs4_del_expiring(expiring);
+ autofs_expire_wait(&this, 0);
+ autofs_del_expiring(expiring);
dput(expiring);
}
return 0;
}
-static struct dentry *autofs4_mountpoint_changed(struct path *path)
+static struct dentry *autofs_mountpoint_changed(struct path *path)
{
struct dentry *dentry = path->dentry;
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
/*
* If this is an indirect mount the dentry could have gone away
@@ -327,7 +321,7 @@ static struct dentry *autofs4_mountpoint_changed(struct path *path)
new = d_lookup(parent, &dentry->d_name);
if (!new)
return NULL;
- ino = autofs4_dentry_ino(new);
+ ino = autofs_dentry_ino(new);
ino->last_used = jiffies;
dput(path->dentry);
path->dentry = new;
@@ -335,17 +329,17 @@ static struct dentry *autofs4_mountpoint_changed(struct path *path)
return path->dentry;
}
-static struct vfsmount *autofs4_d_automount(struct path *path)
+static struct vfsmount *autofs_d_automount(struct path *path)
{
struct dentry *dentry = path->dentry;
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
int status;
pr_debug("dentry=%p %pd\n", dentry, dentry);
/* The daemon never triggers a mount. */
- if (autofs4_oz_mode(sbi))
+ if (autofs_oz_mode(sbi))
return NULL;
/*
@@ -364,7 +358,7 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
spin_lock(&sbi->fs_lock);
if (ino->flags & AUTOFS_INF_PENDING) {
spin_unlock(&sbi->fs_lock);
- status = autofs4_mount_wait(path, 0);
+ status = autofs_mount_wait(path, 0);
if (status)
return ERR_PTR(status);
goto done;
@@ -405,7 +399,7 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
}
ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
- status = autofs4_mount_wait(path, 0);
+ status = autofs_mount_wait(path, 0);
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
if (status) {
@@ -416,24 +410,24 @@ static struct vfsmount *autofs4_d_automount(struct path *path)
spin_unlock(&sbi->fs_lock);
done:
/* Mount succeeded, check if we ended up with a new dentry */
- dentry = autofs4_mountpoint_changed(path);
+ dentry = autofs_mountpoint_changed(path);
if (!dentry)
return ERR_PTR(-ENOENT);
return NULL;
}
-static int autofs4_d_manage(const struct path *path, bool rcu_walk)
+static int autofs_d_manage(const struct path *path, bool rcu_walk)
{
struct dentry *dentry = path->dentry;
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
int status;
pr_debug("dentry=%p %pd\n", dentry, dentry);
/* The daemon never waits. */
- if (autofs4_oz_mode(sbi)) {
+ if (autofs_oz_mode(sbi)) {
if (!path_is_mountpoint(path))
return -EISDIR;
return 0;
@@ -447,7 +441,7 @@ static int autofs4_d_manage(const struct path *path, bool rcu_walk)
* This dentry may be under construction so wait on mount
* completion.
*/
- status = autofs4_mount_wait(path, rcu_walk);
+ status = autofs_mount_wait(path, rcu_walk);
if (status)
return status;
@@ -500,8 +494,8 @@ static int autofs4_d_manage(const struct path *path, bool rcu_walk)
}
/* Lookups in the root directory */
-static struct dentry *autofs4_lookup(struct inode *dir,
- struct dentry *dentry, unsigned int flags)
+static struct dentry *autofs_lookup(struct inode *dir,
+ struct dentry *dentry, unsigned int flags)
{
struct autofs_sb_info *sbi;
struct autofs_info *ino;
@@ -513,13 +507,13 @@ static struct dentry *autofs4_lookup(struct inode *dir,
if (dentry->d_name.len > NAME_MAX)
return ERR_PTR(-ENAMETOOLONG);
- sbi = autofs4_sbi(dir->i_sb);
+ sbi = autofs_sbi(dir->i_sb);
pr_debug("pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d\n",
current->pid, task_pgrp_nr(current), sbi->catatonic,
- autofs4_oz_mode(sbi));
+ autofs_oz_mode(sbi));
- active = autofs4_lookup_active(dentry);
+ active = autofs_lookup_active(dentry);
if (active)
return active;
else {
@@ -529,7 +523,7 @@ static struct dentry *autofs4_lookup(struct inode *dir,
* can return fail immediately. The daemon however does need
* to create directories within the file system.
*/
- if (!autofs4_oz_mode(sbi) && !IS_ROOT(dentry->d_parent))
+ if (!autofs_oz_mode(sbi) && !IS_ROOT(dentry->d_parent))
return ERR_PTR(-ENOENT);
/* Mark entries in the root as mount triggers */
@@ -537,24 +531,24 @@ static struct dentry *autofs4_lookup(struct inode *dir,
autofs_type_indirect(sbi->type))
__managed_dentry_set_managed(dentry);
- ino = autofs4_new_ino(sbi);
+ ino = autofs_new_ino(sbi);
if (!ino)
return ERR_PTR(-ENOMEM);
dentry->d_fsdata = ino;
ino->dentry = dentry;
- autofs4_add_active(dentry);
+ autofs_add_active(dentry);
}
return NULL;
}
-static int autofs4_dir_symlink(struct inode *dir,
+static int autofs_dir_symlink(struct inode *dir,
struct dentry *dentry,
const char *symname)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
struct autofs_info *p_ino;
struct inode *inode;
size_t size = strlen(symname);
@@ -562,14 +556,14 @@ static int autofs4_dir_symlink(struct inode *dir,
pr_debug("%s <- %pd\n", symname, dentry);
- if (!autofs4_oz_mode(sbi))
+ if (!autofs_oz_mode(sbi))
return -EACCES;
BUG_ON(!ino);
- autofs4_clean_ino(ino);
+ autofs_clean_ino(ino);
- autofs4_del_active(dentry);
+ autofs_del_active(dentry);
cp = kmalloc(size + 1, GFP_KERNEL);
if (!cp)
@@ -577,7 +571,7 @@ static int autofs4_dir_symlink(struct inode *dir,
strcpy(cp, symname);
- inode = autofs4_get_inode(dir->i_sb, S_IFLNK | 0555);
+ inode = autofs_get_inode(dir->i_sb, S_IFLNK | 0555);
if (!inode) {
kfree(cp);
return -ENOMEM;
@@ -588,7 +582,7 @@ static int autofs4_dir_symlink(struct inode *dir,
dget(dentry);
atomic_inc(&ino->count);
- p_ino = autofs4_dentry_ino(dentry->d_parent);
+ p_ino = autofs_dentry_ino(dentry->d_parent);
if (p_ino && !IS_ROOT(dentry))
atomic_inc(&p_ino->count);
@@ -610,20 +604,20 @@ static int autofs4_dir_symlink(struct inode *dir,
* If a process is blocked on the dentry waiting for the expire to finish,
* it will invalidate the dentry and try to mount with a new one.
*
- * Also see autofs4_dir_rmdir()..
+ * Also see autofs_dir_rmdir()..
*/
-static int autofs4_dir_unlink(struct inode *dir, struct dentry *dentry)
+static int autofs_dir_unlink(struct inode *dir, struct dentry *dentry)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
struct autofs_info *p_ino;
/* This allows root to remove symlinks */
- if (!autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
+ if (!autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
return -EPERM;
if (atomic_dec_and_test(&ino->count)) {
- p_ino = autofs4_dentry_ino(dentry->d_parent);
+ p_ino = autofs_dentry_ino(dentry->d_parent);
if (p_ino && !IS_ROOT(dentry))
atomic_dec(&p_ino->count);
}
@@ -635,7 +629,7 @@ static int autofs4_dir_unlink(struct inode *dir, struct dentry *dentry)
dir->i_mtime = current_time(dir);
spin_lock(&sbi->lookup_lock);
- __autofs4_add_expiring(dentry);
+ __autofs_add_expiring(dentry);
d_drop(dentry);
spin_unlock(&sbi->lookup_lock);
@@ -692,15 +686,15 @@ static void autofs_clear_leaf_automount_flags(struct dentry *dentry)
managed_dentry_set_managed(parent);
}
-static int autofs4_dir_rmdir(struct inode *dir, struct dentry *dentry)
+static int autofs_dir_rmdir(struct inode *dir, struct dentry *dentry)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
struct autofs_info *p_ino;
pr_debug("dentry %p, removing %pd\n", dentry, dentry);
- if (!autofs4_oz_mode(sbi))
+ if (!autofs_oz_mode(sbi))
return -EACCES;
spin_lock(&sbi->lookup_lock);
@@ -708,7 +702,7 @@ static int autofs4_dir_rmdir(struct inode *dir, struct dentry *dentry)
spin_unlock(&sbi->lookup_lock);
return -ENOTEMPTY;
}
- __autofs4_add_expiring(dentry);
+ __autofs_add_expiring(dentry);
d_drop(dentry);
spin_unlock(&sbi->lookup_lock);
@@ -716,7 +710,7 @@ static int autofs4_dir_rmdir(struct inode *dir, struct dentry *dentry)
autofs_clear_leaf_automount_flags(dentry);
if (atomic_dec_and_test(&ino->count)) {
- p_ino = autofs4_dentry_ino(dentry->d_parent);
+ p_ino = autofs_dentry_ino(dentry->d_parent);
if (p_ino && dentry->d_parent != dentry)
atomic_dec(&p_ino->count);
}
@@ -730,26 +724,26 @@ static int autofs4_dir_rmdir(struct inode *dir, struct dentry *dentry)
return 0;
}
-static int autofs4_dir_mkdir(struct inode *dir,
- struct dentry *dentry, umode_t mode)
+static int autofs_dir_mkdir(struct inode *dir,
+ struct dentry *dentry, umode_t mode)
{
- struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb);
+ struct autofs_info *ino = autofs_dentry_ino(dentry);
struct autofs_info *p_ino;
struct inode *inode;
- if (!autofs4_oz_mode(sbi))
+ if (!autofs_oz_mode(sbi))
return -EACCES;
pr_debug("dentry %p, creating %pd\n", dentry, dentry);
BUG_ON(!ino);
- autofs4_clean_ino(ino);
+ autofs_clean_ino(ino);
- autofs4_del_active(dentry);
+ autofs_del_active(dentry);
- inode = autofs4_get_inode(dir->i_sb, S_IFDIR | mode);
+ inode = autofs_get_inode(dir->i_sb, S_IFDIR | mode);
if (!inode)
return -ENOMEM;
d_add(dentry, inode);
@@ -759,7 +753,7 @@ static int autofs4_dir_mkdir(struct inode *dir,
dget(dentry);
atomic_inc(&ino->count);
- p_ino = autofs4_dentry_ino(dentry->d_parent);
+ p_ino = autofs_dentry_ino(dentry->d_parent);
if (p_ino && !IS_ROOT(dentry))
atomic_inc(&p_ino->count);
inc_nlink(dir);
@@ -770,7 +764,7 @@ static int autofs4_dir_mkdir(struct inode *dir,
/* Get/set timeout ioctl() operation */
#ifdef CONFIG_COMPAT
-static inline int autofs4_compat_get_set_timeout(struct autofs_sb_info *sbi,
+static inline int autofs_compat_get_set_timeout(struct autofs_sb_info *sbi,
compat_ulong_t __user *p)
{
unsigned long ntimeout;
@@ -795,7 +789,7 @@ error:
}
#endif
-static inline int autofs4_get_set_timeout(struct autofs_sb_info *sbi,
+static inline int autofs_get_set_timeout(struct autofs_sb_info *sbi,
unsigned long __user *p)
{
unsigned long ntimeout;
@@ -820,14 +814,14 @@ error:
}
/* Return protocol version */
-static inline int autofs4_get_protover(struct autofs_sb_info *sbi,
+static inline int autofs_get_protover(struct autofs_sb_info *sbi,
int __user *p)
{
return put_user(sbi->version, p);
}
/* Return protocol sub version */
-static inline int autofs4_get_protosubver(struct autofs_sb_info *sbi,
+static inline int autofs_get_protosubver(struct autofs_sb_info *sbi,
int __user *p)
{
return put_user(sbi->sub_version, p);
@@ -836,7 +830,7 @@ static inline int autofs4_get_protosubver(struct autofs_sb_info *sbi,
/*
* Tells the daemon whether it can umount the autofs mount.
*/
-static inline int autofs4_ask_umount(struct vfsmount *mnt, int __user *p)
+static inline int autofs_ask_umount(struct vfsmount *mnt, int __user *p)
{
int status = 0;
@@ -850,14 +844,14 @@ static inline int autofs4_ask_umount(struct vfsmount *mnt, int __user *p)
return status;
}
-/* Identify autofs4_dentries - this is so we can tell if there's
+/* Identify autofs_dentries - this is so we can tell if there's
* an extra dentry refcount or not. We only hold a refcount on the
* dentry if its non-negative (ie, d_inode != NULL)
*/
-int is_autofs4_dentry(struct dentry *dentry)
+int is_autofs_dentry(struct dentry *dentry)
{
return dentry && d_really_is_positive(dentry) &&
- dentry->d_op == &autofs4_dentry_operations &&
+ dentry->d_op == &autofs_dentry_operations &&
dentry->d_fsdata != NULL;
}
@@ -865,10 +859,10 @@ int is_autofs4_dentry(struct dentry *dentry)
* ioctl()'s on the root directory is the chief method for the daemon to
* generate kernel reactions
*/
-static int autofs4_root_ioctl_unlocked(struct inode *inode, struct file *filp,
+static int autofs_root_ioctl_unlocked(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
- struct autofs_sb_info *sbi = autofs4_sbi(inode->i_sb);
+ struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb);
void __user *p = (void __user *)arg;
pr_debug("cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u\n",
@@ -878,64 +872,63 @@ static int autofs4_root_ioctl_unlocked(struct inode *inode, struct file *filp,
_IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)
return -ENOTTY;
- if (!autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
+ if (!autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
return -EPERM;
switch (cmd) {
case AUTOFS_IOC_READY: /* Wait queue: go ahead and retry */
- return autofs4_wait_release(sbi, (autofs_wqt_t) arg, 0);
+ return autofs_wait_release(sbi, (autofs_wqt_t) arg, 0);
case AUTOFS_IOC_FAIL: /* Wait queue: fail with ENOENT */
- return autofs4_wait_release(sbi, (autofs_wqt_t) arg, -ENOENT);
+ return autofs_wait_release(sbi, (autofs_wqt_t) arg, -ENOENT);
case AUTOFS_IOC_CATATONIC: /* Enter catatonic mode (daemon shutdown) */
- autofs4_catatonic_mode(sbi);
+ autofs_catatonic_mode(sbi);
return 0;
case AUTOFS_IOC_PROTOVER: /* Get protocol version */
- return autofs4_get_protover(sbi, p);
+ return autofs_get_protover(sbi, p);
case AUTOFS_IOC_PROTOSUBVER: /* Get protocol sub version */
- return autofs4_get_protosubver(sbi, p);
+ return autofs_get_protosubver(sbi, p);
case AUTOFS_IOC_SETTIMEOUT:
- return autofs4_get_set_timeout(sbi, p);
+ return autofs_get_set_timeout(sbi, p);
#ifdef CONFIG_COMPAT
case AUTOFS_IOC_SETTIMEOUT32:
- return autofs4_compat_get_set_timeout(sbi, p);
+ return autofs_compat_get_set_timeout(sbi, p);
#endif
case AUTOFS_IOC_ASKUMOUNT:
- return autofs4_ask_umount(filp->f_path.mnt, p);
+ return autofs_ask_umount(filp->f_path.mnt, p);
/* return a single thing to expire */
case AUTOFS_IOC_EXPIRE:
- return autofs4_expire_run(inode->i_sb,
- filp->f_path.mnt, sbi, p);
+ return autofs_expire_run(inode->i_sb, filp->f_path.mnt, sbi, p);
/* same as above, but can send multiple expires through pipe */
case AUTOFS_IOC_EXPIRE_MULTI:
- return autofs4_expire_multi(inode->i_sb,
- filp->f_path.mnt, sbi, p);
+ return autofs_expire_multi(inode->i_sb,
+ filp->f_path.mnt, sbi, p);
default:
return -EINVAL;
}
}
-static long autofs4_root_ioctl(struct file *filp,
+static long autofs_root_ioctl(struct file *filp,
unsigned int cmd, unsigned long arg)
{
struct inode *inode = file_inode(filp);
- return autofs4_root_ioctl_unlocked(inode, filp, cmd, arg);
+ return autofs_root_ioctl_unlocked(inode, filp, cmd, arg);
}
#ifdef CONFIG_COMPAT
-static long autofs4_root_compat_ioctl(struct file *filp,
+static long autofs_root_compat_ioctl(struct file *filp,
unsigned int cmd, unsigned long arg)
{
struct inode *inode = file_inode(filp);
int ret;
if (cmd == AUTOFS_IOC_READY || cmd == AUTOFS_IOC_FAIL)
- ret = autofs4_root_ioctl_unlocked(inode, filp, cmd, arg);
+ ret = autofs_root_ioctl_unlocked(inode, filp, cmd, arg);
else
- ret = autofs4_root_ioctl_unlocked(inode, filp, cmd,
+ ret = autofs_root_ioctl_unlocked(inode, filp, cmd,
(unsigned long) compat_ptr(arg));
return ret;
diff --git a/fs/autofs4/symlink.c b/fs/autofs/symlink.c
index ab0b4285a202..aad3902c0cc1 100644
--- a/fs/autofs4/symlink.c
+++ b/fs/autofs/symlink.c
@@ -8,22 +8,22 @@
#include "autofs_i.h"
-static const char *autofs4_get_link(struct dentry *dentry,
- struct inode *inode,
- struct delayed_call *done)
+static const char *autofs_get_link(struct dentry *dentry,
+ struct inode *inode,
+ struct delayed_call *done)
{
struct autofs_sb_info *sbi;
struct autofs_info *ino;
if (!dentry)
return ERR_PTR(-ECHILD);
- sbi = autofs4_sbi(dentry->d_sb);
- ino = autofs4_dentry_ino(dentry);
- if (ino && !autofs4_oz_mode(sbi))
+ sbi = autofs_sbi(dentry->d_sb);
+ ino = autofs_dentry_ino(dentry);
+ if (ino && !autofs_oz_mode(sbi))
ino->last_used = jiffies;
return d_inode(dentry)->i_private;
}
-const struct inode_operations autofs4_symlink_inode_operations = {
- .get_link = autofs4_get_link
+const struct inode_operations autofs_symlink_inode_operations = {
+ .get_link = autofs_get_link
};
diff --git a/fs/autofs4/waitq.c b/fs/autofs/waitq.c
index be9c3dc048ab..f6385c6ef0a5 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs/waitq.c
@@ -7,19 +7,15 @@
* option, any later version, incorporated herein by reference.
*/
-#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/signal.h>
#include <linux/sched/signal.h>
-#include <linux/file.h>
#include "autofs_i.h"
/* We make this a static variable rather than a part of the superblock; it
* is better if we don't reassign numbers easily even across filesystems
*/
-static autofs_wqt_t autofs4_next_wait_queue = 1;
+static autofs_wqt_t autofs_next_wait_queue = 1;
-void autofs4_catatonic_mode(struct autofs_sb_info *sbi)
+void autofs_catatonic_mode(struct autofs_sb_info *sbi)
{
struct autofs_wait_queue *wq, *nwq;
@@ -49,8 +45,8 @@ void autofs4_catatonic_mode(struct autofs_sb_info *sbi)
mutex_unlock(&sbi->wq_mutex);
}
-static int autofs4_write(struct autofs_sb_info *sbi,
- struct file *file, const void *addr, int bytes)
+static int autofs_write(struct autofs_sb_info *sbi,
+ struct file *file, const void *addr, int bytes)
{
unsigned long sigpipe, flags;
const char *data = (const char *)addr;
@@ -82,7 +78,7 @@ static int autofs4_write(struct autofs_sb_info *sbi,
return bytes == 0 ? 0 : wr < 0 ? wr : -EIO;
}
-static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
+static void autofs_notify_daemon(struct autofs_sb_info *sbi,
struct autofs_wait_queue *wq,
int type)
{
@@ -167,23 +163,23 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi,
mutex_unlock(&sbi->wq_mutex);
- switch (ret = autofs4_write(sbi, pipe, &pkt, pktsz)) {
+ switch (ret = autofs_write(sbi, pipe, &pkt, pktsz)) {
case 0:
break;
case -ENOMEM:
case -ERESTARTSYS:
/* Just fail this one */
- autofs4_wait_release(sbi, wq->wait_queue_token, ret);
+ autofs_wait_release(sbi, wq->wait_queue_token, ret);
break;
default:
- autofs4_catatonic_mode(sbi);
+ autofs_catatonic_mode(sbi);
break;
}
fput(pipe);
}
-static int autofs4_getpath(struct autofs_sb_info *sbi,
- struct dentry *dentry, char **name)
+static int autofs_getpath(struct autofs_sb_info *sbi,
+ struct dentry *dentry, char *name)
{
struct dentry *root = sbi->sb->s_root;
struct dentry *tmp;
@@ -193,7 +189,7 @@ static int autofs4_getpath(struct autofs_sb_info *sbi,
unsigned seq;
rename_retry:
- buf = *name;
+ buf = name;
len = 0;
seq = read_seqbegin(&rename_lock);
@@ -228,7 +224,7 @@ rename_retry:
}
static struct autofs_wait_queue *
-autofs4_find_wait(struct autofs_sb_info *sbi, const struct qstr *qstr)
+autofs_find_wait(struct autofs_sb_info *sbi, const struct qstr *qstr)
{
struct autofs_wait_queue *wq;
@@ -263,7 +259,7 @@ static int validate_request(struct autofs_wait_queue **wait,
return -ENOENT;
/* Wait in progress, continue; */
- wq = autofs4_find_wait(sbi, qstr);
+ wq = autofs_find_wait(sbi, qstr);
if (wq) {
*wait = wq;
return 1;
@@ -272,7 +268,7 @@ static int validate_request(struct autofs_wait_queue **wait,
*wait = NULL;
/* If we don't yet have any info this is a new request */
- ino = autofs4_dentry_ino(dentry);
+ ino = autofs_dentry_ino(dentry);
if (!ino)
return 1;
@@ -297,7 +293,7 @@ static int validate_request(struct autofs_wait_queue **wait,
if (sbi->catatonic)
return -ENOENT;
- wq = autofs4_find_wait(sbi, qstr);
+ wq = autofs_find_wait(sbi, qstr);
if (wq) {
*wait = wq;
return 1;
@@ -351,7 +347,7 @@ static int validate_request(struct autofs_wait_queue **wait,
return 1;
}
-int autofs4_wait(struct autofs_sb_info *sbi,
+int autofs_wait(struct autofs_sb_info *sbi,
const struct path *path, enum autofs_notify notify)
{
struct dentry *dentry = path->dentry;
@@ -399,7 +395,7 @@ int autofs4_wait(struct autofs_sb_info *sbi,
if (IS_ROOT(dentry) && autofs_type_trigger(sbi->type))
qstr.len = sprintf(name, "%p", dentry);
else {
- qstr.len = autofs4_getpath(sbi, dentry, &name);
+ qstr.len = autofs_getpath(sbi, dentry, name);
if (!qstr.len) {
kfree(name);
return -ENOENT;
@@ -430,15 +426,15 @@ int autofs4_wait(struct autofs_sb_info *sbi,
return -ENOMEM;
}
- wq->wait_queue_token = autofs4_next_wait_queue;
- if (++autofs4_next_wait_queue == 0)
- autofs4_next_wait_queue = 1;
+ wq->wait_queue_token = autofs_next_wait_queue;
+ if (++autofs_next_wait_queue == 0)
+ autofs_next_wait_queue = 1;
wq->next = sbi->queues;
sbi->queues = wq;
init_waitqueue_head(&wq->queue);
memcpy(&wq->name, &qstr, sizeof(struct qstr));
- wq->dev = autofs4_get_dev(sbi);
- wq->ino = autofs4_get_ino(sbi);
+ wq->dev = autofs_get_dev(sbi);
+ wq->ino = autofs_get_ino(sbi);
wq->uid = current_uid();
wq->gid = current_gid();
wq->pid = pid;
@@ -467,9 +463,9 @@ int autofs4_wait(struct autofs_sb_info *sbi,
wq->name.name, notify);
/*
- * autofs4_notify_daemon() may block; it will unlock ->wq_mutex
+ * autofs_notify_daemon() may block; it will unlock ->wq_mutex
*/
- autofs4_notify_daemon(sbi, wq, type);
+ autofs_notify_daemon(sbi, wq, type);
} else {
wq->wait_ctr++;
pr_debug("existing wait id = 0x%08lx, name = %.*s, nfy=%d\n",
@@ -500,12 +496,12 @@ int autofs4_wait(struct autofs_sb_info *sbi,
struct dentry *de = NULL;
/* direct mount or browsable map */
- ino = autofs4_dentry_ino(dentry);
+ ino = autofs_dentry_ino(dentry);
if (!ino) {
/* If not lookup actual dentry used */
de = d_lookup(dentry->d_parent, &dentry->d_name);
if (de)
- ino = autofs4_dentry_ino(de);
+ ino = autofs_dentry_ino(de);
}
/* Set mount requester */
@@ -530,7 +526,8 @@ int autofs4_wait(struct autofs_sb_info *sbi,
}
-int autofs4_wait_release(struct autofs_sb_info *sbi, autofs_wqt_t wait_queue_token, int status)
+int autofs_wait_release(struct autofs_sb_info *sbi,
+ autofs_wqt_t wait_queue_token, int status)
{
struct autofs_wait_queue *wq, **wql;
diff --git a/fs/autofs4/Kconfig b/fs/autofs4/Kconfig
index 44727bf18297..99fda4d6da25 100644
--- a/fs/autofs4/Kconfig
+++ b/fs/autofs4/Kconfig
@@ -1,5 +1,7 @@
config AUTOFS4_FS
- tristate "Kernel automounter version 4 support (also supports v3)"
+ tristate "Kernel automounter version 4 support (also supports v3 and v5)"
+ default n
+ depends on AUTOFS_FS = n
help
The automounter is a tool to automatically mount remote file systems
on demand. This implementation is partially kernel-based to reduce
@@ -7,14 +9,38 @@ config AUTOFS4_FS
automounter (amd), which is a pure user space daemon.
To use the automounter you need the user-space tools from
- <https://www.kernel.org/pub/linux/daemons/autofs/v4/>; you also
- want to answer Y to "NFS file system support", below.
+ <https://www.kernel.org/pub/linux/daemons/autofs/>; you also want
+ to answer Y to "NFS file system support", below.
- To compile this support as a module, choose M here: the module will be
- called autofs4. You will need to add "alias autofs autofs4" to your
- modules configuration file.
+ This module is in the process of being renamed from autofs4 to
+ autofs. Since autofs is now the only module that provides the
+ autofs file system the module is not version 4 specific.
- If you are not a part of a fairly large, distributed network or
- don't have a laptop which needs to dynamically reconfigure to the
- local network, you probably do not need an automounter, and can say
- N here.
+ The autofs4 module is now built from the source located in
+ fs/autofs. The autofs4 directory and its configuration entry
+ will be removed two kernel versions from the inclusion of this
+ change.
+
+ Changes that will need to be made should be limited to:
+ - source include statments should be changed from autofs_fs4.h to
+ autofs_fs.h since these two header files have been merged.
+ - user space scripts that manually load autofs4.ko should be
+ changed to load autofs.ko. But since the module directory name
+ and the module name are the same as the file system name there
+ is no need to manually load module.
+ - any "alias autofs autofs4" will need to be removed.
+ - due to the autofs4 module directory name not being the same as
+ its file system name autoloading didn't work properly. Because
+ of this kernel configurations would often build the module into
+ the kernel. This may have resulted in selinux policies that will
+ prevent the autofs module from autoloading and will need to be
+ updated.
+
+ Please configure AUTOFS_FS instead of AUTOFS4_FS from now on.
+
+ NOTE: Since the modules autofs and autofs4 use the same file system
+ type name of "autofs" only one can be built. The "depends"
+ above will result in AUTOFS4_FS not appearing in .config for
+ any setting of AUTOFS_FS other than n and AUTOFS4_FS will
+ appear under the AUTOFS_FS entry otherwise which is intended
+ to draw attention to the module rename change.
diff --git a/fs/autofs4/Makefile b/fs/autofs4/Makefile
index a811c1f7d9ab..417dd726d9ef 100644
--- a/fs/autofs4/Makefile
+++ b/fs/autofs4/Makefile
@@ -4,4 +4,6 @@
obj-$(CONFIG_AUTOFS4_FS) += autofs4.o
-autofs4-objs := init.o inode.o root.o symlink.o waitq.o expire.o dev-ioctl.o
+autofs4-objs := ../autofs/init.o ../autofs/inode.o ../autofs/root.o \
+ ../autofs/symlink.o ../autofs/waitq.o ../autofs/expire.o \
+ ../autofs/dev-ioctl.o
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index a41b48f82a70..4de191563261 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -387,8 +387,13 @@ static Node *create_entry(const char __user *buffer, size_t count)
s = strchr(p, del);
if (!s)
goto einval;
- *s++ = '\0';
- e->offset = simple_strtoul(p, &p, 10);
+ *s = '\0';
+ if (p != s) {
+ int r = kstrtoint(p, 10, &e->offset);
+ if (r != 0 || e->offset < 0)
+ goto einval;
+ }
+ p = s;
if (*p++)
goto einval;
pr_debug("register: offset: %#x\n", e->offset);
@@ -428,7 +433,8 @@ static Node *create_entry(const char __user *buffer, size_t count)
if (e->mask &&
string_unescape_inplace(e->mask, UNESCAPE_HEX) != e->size)
goto einval;
- if (e->size + e->offset > BINPRM_BUF_SIZE)
+ if (e->size > BINPRM_BUF_SIZE ||
+ BINPRM_BUF_SIZE - e->size < e->offset)
goto einval;
pr_debug("register: magic/mask length: %i\n", e->size);
if (USE_DEBUG) {
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index ef80085ed564..9907475b4226 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -38,8 +38,6 @@
#include <linux/ppp-ioctl.h>
#include <linux/if_pppox.h>
#include <linux/mtio.h>
-#include <linux/auto_fs.h>
-#include <linux/auto_fs4.h>
#include <linux/tty.h>
#include <linux/vt_kern.h>
#include <linux/fb.h>
diff --git a/fs/dax.c b/fs/dax.c
index aa86d9f971a4..08656a2f2aa6 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -905,12 +905,12 @@ out:
* If this page is ever written to we will re-fault and change the mapping to
* point to real DAX storage instead.
*/
-static int dax_load_hole(struct address_space *mapping, void *entry,
+static vm_fault_t dax_load_hole(struct address_space *mapping, void *entry,
struct vm_fault *vmf)
{
struct inode *inode = mapping->host;
unsigned long vaddr = vmf->address;
- int ret = VM_FAULT_NOPAGE;
+ vm_fault_t ret = VM_FAULT_NOPAGE;
struct page *zero_page;
void *entry2;
pfn_t pfn;
@@ -929,7 +929,7 @@ static int dax_load_hole(struct address_space *mapping, void *entry,
goto out;
}
- vm_insert_mixed(vmf->vma, vaddr, pfn);
+ ret = vmf_insert_mixed(vmf->vma, vaddr, pfn);
out:
trace_dax_load_hole(inode, vmf, ret);
return ret;
@@ -1112,7 +1112,7 @@ dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter,
}
EXPORT_SYMBOL_GPL(dax_iomap_rw);
-static int dax_fault_return(int error)
+static vm_fault_t dax_fault_return(int error)
{
if (error == 0)
return VM_FAULT_NOPAGE;
@@ -1132,7 +1132,7 @@ static bool dax_fault_is_synchronous(unsigned long flags,
&& (iomap->flags & IOMAP_F_DIRTY);
}
-static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
+static vm_fault_t dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
int *iomap_errp, const struct iomap_ops *ops)
{
struct vm_area_struct *vma = vmf->vma;
@@ -1145,18 +1145,18 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
int error, major = 0;
bool write = vmf->flags & FAULT_FLAG_WRITE;
bool sync;
- int vmf_ret = 0;
+ vm_fault_t ret = 0;
void *entry;
pfn_t pfn;
- trace_dax_pte_fault(inode, vmf, vmf_ret);
+ trace_dax_pte_fault(inode, vmf, ret);
/*
* Check whether offset isn't beyond end of file now. Caller is supposed
* to hold locks serializing us with truncate / punch hole so this is
* a reliable test.
*/
if (pos >= i_size_read(inode)) {
- vmf_ret = VM_FAULT_SIGBUS;
+ ret = VM_FAULT_SIGBUS;
goto out;
}
@@ -1165,7 +1165,7 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
entry = grab_mapping_entry(mapping, vmf->pgoff, 0);
if (IS_ERR(entry)) {
- vmf_ret = dax_fault_return(PTR_ERR(entry));
+ ret = dax_fault_return(PTR_ERR(entry));
goto out;
}
@@ -1176,7 +1176,7 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
* retried.
*/
if (pmd_trans_huge(*vmf->pmd) || pmd_devmap(*vmf->pmd)) {
- vmf_ret = VM_FAULT_NOPAGE;
+ ret = VM_FAULT_NOPAGE;
goto unlock_entry;
}
@@ -1189,7 +1189,7 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
if (iomap_errp)
*iomap_errp = error;
if (error) {
- vmf_ret = dax_fault_return(error);
+ ret = dax_fault_return(error);
goto unlock_entry;
}
if (WARN_ON_ONCE(iomap.offset + iomap.length < pos + PAGE_SIZE)) {
@@ -1219,9 +1219,9 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
goto error_finish_iomap;
__SetPageUptodate(vmf->cow_page);
- vmf_ret = finish_fault(vmf);
- if (!vmf_ret)
- vmf_ret = VM_FAULT_DONE_COW;
+ ret = finish_fault(vmf);
+ if (!ret)
+ ret = VM_FAULT_DONE_COW;
goto finish_iomap;
}
@@ -1257,23 +1257,20 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
goto error_finish_iomap;
}
*pfnp = pfn;
- vmf_ret = VM_FAULT_NEEDDSYNC | major;
+ ret = VM_FAULT_NEEDDSYNC | major;
goto finish_iomap;
}
trace_dax_insert_mapping(inode, vmf, entry);
if (write)
- error = vm_insert_mixed_mkwrite(vma, vaddr, pfn);
+ ret = vmf_insert_mixed_mkwrite(vma, vaddr, pfn);
else
- error = vm_insert_mixed(vma, vaddr, pfn);
+ ret = vmf_insert_mixed(vma, vaddr, pfn);
- /* -EBUSY is fine, somebody else faulted on the same PTE */
- if (error == -EBUSY)
- error = 0;
- break;
+ goto finish_iomap;
case IOMAP_UNWRITTEN:
case IOMAP_HOLE:
if (!write) {
- vmf_ret = dax_load_hole(mapping, entry, vmf);
+ ret = dax_load_hole(mapping, entry, vmf);
goto finish_iomap;
}
/*FALLTHRU*/
@@ -1284,12 +1281,12 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
}
error_finish_iomap:
- vmf_ret = dax_fault_return(error) | major;
+ ret = dax_fault_return(error);
finish_iomap:
if (ops->iomap_end) {
int copied = PAGE_SIZE;
- if (vmf_ret & VM_FAULT_ERROR)
+ if (ret & VM_FAULT_ERROR)
copied = 0;
/*
* The fault is done by now and there's no way back (other
@@ -1302,12 +1299,12 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
unlock_entry:
put_locked_mapping_entry(mapping, vmf->pgoff);
out:
- trace_dax_pte_fault_done(inode, vmf, vmf_ret);
- return vmf_ret;
+ trace_dax_pte_fault_done(inode, vmf, ret);
+ return ret | major;
}
#ifdef CONFIG_FS_DAX_PMD
-static int dax_pmd_load_hole(struct vm_fault *vmf, struct iomap *iomap,
+static vm_fault_t dax_pmd_load_hole(struct vm_fault *vmf, struct iomap *iomap,
void *entry)
{
struct address_space *mapping = vmf->vma->vm_file->f_mapping;
@@ -1348,7 +1345,7 @@ fallback:
return VM_FAULT_FALLBACK;
}
-static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
+static vm_fault_t dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
const struct iomap_ops *ops)
{
struct vm_area_struct *vma = vmf->vma;
@@ -1358,7 +1355,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
bool sync;
unsigned int iomap_flags = (write ? IOMAP_WRITE : 0) | IOMAP_FAULT;
struct inode *inode = mapping->host;
- int result = VM_FAULT_FALLBACK;
+ vm_fault_t result = VM_FAULT_FALLBACK;
struct iomap iomap = { 0 };
pgoff_t max_pgoff, pgoff;
void *entry;
@@ -1509,7 +1506,7 @@ out:
return result;
}
#else
-static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
+static vm_fault_t dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
const struct iomap_ops *ops)
{
return VM_FAULT_FALLBACK;
@@ -1529,7 +1526,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
* has done all the necessary locking for page fault to proceed
* successfully.
*/
-int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size,
+vm_fault_t dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size,
pfn_t *pfnp, int *iomap_errp, const struct iomap_ops *ops)
{
switch (pe_size) {
@@ -1553,14 +1550,14 @@ EXPORT_SYMBOL_GPL(dax_iomap_fault);
* DAX file. It takes care of marking corresponding radix tree entry as dirty
* as well.
*/
-static int dax_insert_pfn_mkwrite(struct vm_fault *vmf,
+static vm_fault_t dax_insert_pfn_mkwrite(struct vm_fault *vmf,
enum page_entry_size pe_size,
pfn_t pfn)
{
struct address_space *mapping = vmf->vma->vm_file->f_mapping;
void *entry, **slot;
pgoff_t index = vmf->pgoff;
- int vmf_ret, error;
+ vm_fault_t ret;
xa_lock_irq(&mapping->i_pages);
entry = get_unlocked_mapping_entry(mapping, index, &slot);
@@ -1579,21 +1576,20 @@ static int dax_insert_pfn_mkwrite(struct vm_fault *vmf,
xa_unlock_irq(&mapping->i_pages);
switch (pe_size) {
case PE_SIZE_PTE:
- error = vm_insert_mixed_mkwrite(vmf->vma, vmf->address, pfn);
- vmf_ret = dax_fault_return(error);
+ ret = vmf_insert_mixed_mkwrite(vmf->vma, vmf->address, pfn);
break;
#ifdef CONFIG_FS_DAX_PMD
case PE_SIZE_PMD:
- vmf_ret = vmf_insert_pfn_pmd(vmf->vma, vmf->address, vmf->pmd,
+ ret = vmf_insert_pfn_pmd(vmf->vma, vmf->address, vmf->pmd,
pfn, true);
break;
#endif
default:
- vmf_ret = VM_FAULT_FALLBACK;
+ ret = VM_FAULT_FALLBACK;
}
put_locked_mapping_entry(mapping, index);
- trace_dax_insert_pfn_mkwrite(mapping->host, vmf, vmf_ret);
- return vmf_ret;
+ trace_dax_insert_pfn_mkwrite(mapping->host, vmf, ret);
+ return ret;
}
/**
@@ -1606,8 +1602,8 @@ static int dax_insert_pfn_mkwrite(struct vm_fault *vmf,
* stored persistently on the media and handles inserting of appropriate page
* table entry.
*/
-int dax_finish_sync_fault(struct vm_fault *vmf, enum page_entry_size pe_size,
- pfn_t pfn)
+vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf,
+ enum page_entry_size pe_size, pfn_t pfn)
{
int err;
loff_t start = ((loff_t)vmf->pgoff) << PAGE_SHIFT;
diff --git a/fs/fcntl.c b/fs/fcntl.c
index c42169459298..12273b6ea56d 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -23,7 +23,7 @@
#include <linux/rcupdate.h>
#include <linux/pid_namespace.h>
#include <linux/user_namespace.h>
-#include <linux/shmem_fs.h>
+#include <linux/memfd.h>
#include <linux/compat.h>
#include <linux/poll.h>
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 97a972efab83..68728de12864 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -788,35 +788,34 @@ static inline void ocfs2_add_holder(struct ocfs2_lock_res *lockres,
spin_unlock(&lockres->l_lock);
}
-static inline void ocfs2_remove_holder(struct ocfs2_lock_res *lockres,
- struct ocfs2_lock_holder *oh)
-{
- spin_lock(&lockres->l_lock);
- list_del(&oh->oh_list);
- spin_unlock(&lockres->l_lock);
-
- put_pid(oh->oh_owner_pid);
-}
-
-static inline int ocfs2_is_locked_by_me(struct ocfs2_lock_res *lockres)
+static struct ocfs2_lock_holder *
+ocfs2_pid_holder(struct ocfs2_lock_res *lockres,
+ struct pid *pid)
{
struct ocfs2_lock_holder *oh;
- struct pid *pid;
- /* look in the list of holders for one with the current task as owner */
spin_lock(&lockres->l_lock);
- pid = task_pid(current);
list_for_each_entry(oh, &lockres->l_holders, oh_list) {
if (oh->oh_owner_pid == pid) {
spin_unlock(&lockres->l_lock);
- return 1;
+ return oh;
}
}
spin_unlock(&lockres->l_lock);
+ return NULL;
+}
- return 0;
+static inline void ocfs2_remove_holder(struct ocfs2_lock_res *lockres,
+ struct ocfs2_lock_holder *oh)
+{
+ spin_lock(&lockres->l_lock);
+ list_del(&oh->oh_list);
+ spin_unlock(&lockres->l_lock);
+
+ put_pid(oh->oh_owner_pid);
}
+
static inline void ocfs2_inc_holders(struct ocfs2_lock_res *lockres,
int level)
{
@@ -2610,34 +2609,93 @@ void ocfs2_inode_unlock(struct inode *inode,
*
* return < 0 on error, return == 0 if there's no lock holder on the stack
* before this call, return == 1 if this call would be a recursive locking.
+ * return == -1 if this lock attempt will cause an upgrade which is forbidden.
+ *
+ * When taking lock levels into account,we face some different situations.
+ *
+ * 1. no lock is held
+ * In this case, just lock the inode as requested and return 0
+ *
+ * 2. We are holding a lock
+ * For this situation, things diverges into several cases
+ *
+ * wanted holding what to do
+ * ex ex see 2.1 below
+ * ex pr see 2.2 below
+ * pr ex see 2.1 below
+ * pr pr see 2.1 below
+ *
+ * 2.1 lock level that is been held is compatible
+ * with the wanted level, so no lock action will be tacken.
+ *
+ * 2.2 Otherwise, an upgrade is needed, but it is forbidden.
+ *
+ * Reason why upgrade within a process is forbidden is that
+ * lock upgrade may cause dead lock. The following illustrates
+ * how it happens.
+ *
+ * thread on node1 thread on node2
+ * ocfs2_inode_lock_tracker(ex=0)
+ *
+ * <====== ocfs2_inode_lock_tracker(ex=1)
+ *
+ * ocfs2_inode_lock_tracker(ex=1)
*/
int ocfs2_inode_lock_tracker(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
struct ocfs2_lock_holder *oh)
{
- int status;
- int arg_flags = 0, has_locked;
+ int status = 0;
struct ocfs2_lock_res *lockres;
+ struct ocfs2_lock_holder *tmp_oh;
+ struct pid *pid = task_pid(current);
+
lockres = &OCFS2_I(inode)->ip_inode_lockres;
- has_locked = ocfs2_is_locked_by_me(lockres);
- /* Just get buffer head if the cluster lock has been taken */
- if (has_locked)
- arg_flags = OCFS2_META_LOCK_GETBH;
+ tmp_oh = ocfs2_pid_holder(lockres, pid);
- if (likely(!has_locked || ret_bh)) {
- status = ocfs2_inode_lock_full(inode, ret_bh, ex, arg_flags);
+ if (!tmp_oh) {
+ /*
+ * This corresponds to the case 1.
+ * We haven't got any lock before.
+ */
+ status = ocfs2_inode_lock_full(inode, ret_bh, ex, 0);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
return status;
}
- }
- if (!has_locked)
+
+ oh->oh_ex = ex;
ocfs2_add_holder(lockres, oh);
+ return 0;
+ }
- return has_locked;
+ if (unlikely(ex && !tmp_oh->oh_ex)) {
+ /*
+ * case 2.2 upgrade may cause dead lock, forbid it.
+ */
+ mlog(ML_ERROR, "Recursive locking is not permitted to "
+ "upgrade to EX level from PR level.\n");
+ dump_stack();
+ return -EINVAL;
+ }
+
+ /*
+ * case 2.1 OCFS2_META_LOCK_GETBH flag make ocfs2_inode_lock_full.
+ * ignore the lock level and just update it.
+ */
+ if (ret_bh) {
+ status = ocfs2_inode_lock_full(inode, ret_bh, ex,
+ OCFS2_META_LOCK_GETBH);
+ if (status < 0) {
+ if (status != -ENOENT)
+ mlog_errno(status);
+ return status;
+ }
+ }
+ return tmp_oh ? 1 : 0;
}
void ocfs2_inode_unlock_tracker(struct inode *inode,
@@ -2649,12 +2707,13 @@ void ocfs2_inode_unlock_tracker(struct inode *inode,
lockres = &OCFS2_I(inode)->ip_inode_lockres;
/* had_lock means that the currect process already takes the cluster
- * lock previously. If had_lock is 1, we have nothing to do here, and
- * it will get unlocked where we got the lock.
+ * lock previously.
+ * If had_lock is 1, we have nothing to do here.
+ * If had_lock is 0, we will release the lock.
*/
if (!had_lock) {
+ ocfs2_inode_unlock(inode, oh->oh_ex);
ocfs2_remove_holder(lockres, oh);
- ocfs2_inode_unlock(inode, ex);
}
}
diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h
index 256e0a9067b8..4ec1c828f6e0 100644
--- a/fs/ocfs2/dlmglue.h
+++ b/fs/ocfs2/dlmglue.h
@@ -96,6 +96,7 @@ struct ocfs2_trim_fs_info {
struct ocfs2_lock_holder {
struct list_head oh_list;
struct pid *oh_owner_pid;
+ int oh_ex;
};
/* ocfs2_inode_lock_full() 'arg_flags' flags */
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 6ee94bc23f5b..a2a8603d27e0 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -563,8 +563,8 @@ int ocfs2_add_inode_data(struct ocfs2_super *osb,
return ret;
}
-static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
- u32 clusters_to_add, int mark_unwritten)
+static int ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
+ u32 clusters_to_add, int mark_unwritten)
{
int status = 0;
int restart_func = 0;
@@ -1035,8 +1035,8 @@ int ocfs2_extend_no_holes(struct inode *inode, struct buffer_head *di_bh,
clusters_to_add -= oi->ip_clusters;
if (clusters_to_add) {
- ret = __ocfs2_extend_allocation(inode, oi->ip_clusters,
- clusters_to_add, 0);
+ ret = ocfs2_extend_allocation(inode, oi->ip_clusters,
+ clusters_to_add, 0);
if (ret) {
mlog_errno(ret);
goto out;
@@ -1493,7 +1493,7 @@ static int ocfs2_allocate_unwritten_extents(struct inode *inode,
goto next;
}
- ret = __ocfs2_extend_allocation(inode, cpos, alloc_size, 1);
+ ret = ocfs2_extend_allocation(inode, cpos, alloc_size, 1);
if (ret) {
if (ret != -ENOSPC)
mlog_errno(ret);
diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index 1fdc9839cd93..7eb7f03531f6 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -65,8 +65,6 @@ int ocfs2_extend_no_holes(struct inode *inode, struct buffer_head *di_bh,
u64 new_i_size, u64 zero_to);
int ocfs2_zero_extend(struct inode *inode, struct buffer_head *di_bh,
loff_t zero_to);
-int ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
- u32 clusters_to_add, int mark_unwritten);
int ocfs2_setattr(struct dentry *dentry, struct iattr *attr);
int ocfs2_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int flags);
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index ab30c005cc4b..994726ada857 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -402,7 +402,7 @@ out_err:
static void o2ffg_update_histogram(struct ocfs2_info_free_chunk_list *hist,
unsigned int chunksize)
{
- int index;
+ u32 index;
index = __ilog2_u32(chunksize);
if (index >= OCFS2_INFO_MAX_HIST)
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index fb9a20e3d608..05220b365fb9 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c
@@ -44,11 +44,11 @@
#include "ocfs2_trace.h"
-static int ocfs2_fault(struct vm_fault *vmf)
+static vm_fault_t ocfs2_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
sigset_t oldset;
- int ret;
+ vm_fault_t ret;
ocfs2_block_signals(&oldset);
ret = filemap_fault(vmf);
@@ -59,10 +59,11 @@ static int ocfs2_fault(struct vm_fault *vmf)
return ret;
}
-static int __ocfs2_page_mkwrite(struct file *file, struct buffer_head *di_bh,
- struct page *page)
+static vm_fault_t __ocfs2_page_mkwrite(struct file *file,
+ struct buffer_head *di_bh, struct page *page)
{
- int ret = VM_FAULT_NOPAGE;
+ int err;
+ vm_fault_t ret = VM_FAULT_NOPAGE;
struct inode *inode = file_inode(file);
struct address_space *mapping = inode->i_mapping;
loff_t pos = page_offset(page);
@@ -105,15 +106,12 @@ static int __ocfs2_page_mkwrite(struct file *file, struct buffer_head *di_bh,
if (page->index == last_index)
len = ((size - 1) & ~PAGE_MASK) + 1;
- ret = ocfs2_write_begin_nolock(mapping, pos, len, OCFS2_WRITE_MMAP,
+ err = ocfs2_write_begin_nolock(mapping, pos, len, OCFS2_WRITE_MMAP,
&locked_page, &fsdata, di_bh, page);
- if (ret) {
- if (ret != -ENOSPC)
- mlog_errno(ret);
- if (ret == -ENOMEM)
- ret = VM_FAULT_OOM;
- else
- ret = VM_FAULT_SIGBUS;
+ if (err) {
+ if (err != -ENOSPC)
+ mlog_errno(err);
+ ret = vmf_error(err);
goto out;
}
@@ -121,20 +119,21 @@ static int __ocfs2_page_mkwrite(struct file *file, struct buffer_head *di_bh,
ret = VM_FAULT_NOPAGE;
goto out;
}
- ret = ocfs2_write_end_nolock(mapping, pos, len, len, fsdata);
- BUG_ON(ret != len);
+ err = ocfs2_write_end_nolock(mapping, pos, len, len, fsdata);
+ BUG_ON(err != len);
ret = VM_FAULT_LOCKED;
out:
return ret;
}
-static int ocfs2_page_mkwrite(struct vm_fault *vmf)
+static vm_fault_t ocfs2_page_mkwrite(struct vm_fault *vmf)
{
struct page *page = vmf->page;
struct inode *inode = file_inode(vmf->vma->vm_file);
struct buffer_head *di_bh = NULL;
sigset_t oldset;
- int ret;
+ int err;
+ vm_fault_t ret;
sb_start_pagefault(inode->i_sb);
ocfs2_block_signals(&oldset);
@@ -144,13 +143,10 @@ static int ocfs2_page_mkwrite(struct vm_fault *vmf)
* node. Taking the data lock will also ensure that we don't
* attempt page truncation as part of a downconvert.
*/
- ret = ocfs2_inode_lock(inode, &di_bh, 1);
- if (ret < 0) {
- mlog_errno(ret);
- if (ret == -ENOMEM)
- ret = VM_FAULT_OOM;
- else
- ret = VM_FAULT_SIGBUS;
+ err = ocfs2_inode_lock(inode, &di_bh, 1);
+ if (err < 0) {
+ mlog_errno(err);
+ ret = vmf_error(err);
goto out;
}
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 8dd6f703c819..b7ca84bc3df7 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -2332,8 +2332,7 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
struct buffer_head *orphan_dir_bh,
bool dio)
{
- const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN;
- char name[namelen + 1];
+ char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1];
struct ocfs2_dinode *orphan_fe;
int status = 0;
struct ocfs2_dir_lookup_result lookup = { NULL, };
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 5bb4a89f9045..7071ad0dec90 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -807,11 +807,11 @@ struct ocfs2_dir_block_trailer {
* in this block. (unused) */
/*10*/ __u8 db_signature[8]; /* Signature for verification */
__le64 db_reserved2;
- __le64 db_free_next; /* Next block in list (unused) */
-/*20*/ __le64 db_blkno; /* Offset on disk, in blocks */
- __le64 db_parent_dinode; /* dinode which owns me, in
+/*20*/ __le64 db_free_next; /* Next block in list (unused) */
+ __le64 db_blkno; /* Offset on disk, in blocks */
+/*30*/ __le64 db_parent_dinode; /* dinode which owns me, in
blocks */
-/*30*/ struct ocfs2_block_check db_check; /* Error checking */
+ struct ocfs2_block_check db_check; /* Error checking */
/*40*/
};
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 004077f1a7bf..0ceb3b6b37e7 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -268,7 +268,7 @@ static inline void task_sig(struct seq_file *m, struct task_struct *p)
unsigned long flags;
sigset_t pending, shpending, blocked, ignored, caught;
int num_threads = 0;
- unsigned long qsize = 0;
+ unsigned int qsize = 0;
unsigned long qlim = 0;
sigemptyset(&pending);
diff --git a/fs/proc/base.c b/fs/proc/base.c
index af128b374143..44dec22e5e9e 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -213,10 +213,14 @@ static ssize_t proc_pid_cmdline_read(struct file *file, char __user *buf,
char *page;
unsigned long count = _count;
unsigned long arg_start, arg_end, env_start, env_end;
- unsigned long len1, len2, len;
- unsigned long p;
+ unsigned long len1, len2;
+ char __user *buf0 = buf;
+ struct {
+ unsigned long p;
+ unsigned long len;
+ } cmdline[2];
char c;
- ssize_t rv;
+ int rv;
BUG_ON(*pos < 0);
@@ -239,12 +243,12 @@ static ssize_t proc_pid_cmdline_read(struct file *file, char __user *buf,
goto out_mmput;
}
- down_read(&mm->mmap_sem);
+ spin_lock(&mm->arg_lock);
arg_start = mm->arg_start;
arg_end = mm->arg_end;
env_start = mm->env_start;
env_end = mm->env_end;
- up_read(&mm->mmap_sem);
+ spin_unlock(&mm->arg_lock);
BUG_ON(arg_start > arg_end);
BUG_ON(env_start > env_end);
@@ -253,61 +257,31 @@ static ssize_t proc_pid_cmdline_read(struct file *file, char __user *buf,
len2 = env_end - env_start;
/* Empty ARGV. */
- if (len1 == 0) {
- rv = 0;
- goto out_free_page;
- }
+ if (len1 == 0)
+ goto end;
+
/*
* Inherently racy -- command line shares address space
* with code and data.
*/
- rv = access_remote_vm(mm, arg_end - 1, &c, 1, FOLL_ANON);
- if (rv <= 0)
- goto out_free_page;
-
- rv = 0;
+ if (access_remote_vm(mm, arg_end - 1, &c, 1, FOLL_ANON) != 1)
+ goto end;
+ cmdline[0].p = arg_start;
+ cmdline[0].len = len1;
if (c == '\0') {
/* Command line (set of strings) occupies whole ARGV. */
- if (len1 <= *pos)
- goto out_free_page;
-
- p = arg_start + *pos;
- len = len1 - *pos;
- while (count > 0 && len > 0) {
- unsigned int _count;
- int nr_read;
-
- _count = min3(count, len, PAGE_SIZE);
- nr_read = access_remote_vm(mm, p, page, _count, FOLL_ANON);
- if (nr_read < 0)
- rv = nr_read;
- if (nr_read <= 0)
- goto out_free_page;
-
- if (copy_to_user(buf, page, nr_read)) {
- rv = -EFAULT;
- goto out_free_page;
- }
-
- p += nr_read;
- len -= nr_read;
- buf += nr_read;
- count -= nr_read;
- rv += nr_read;
- }
+ cmdline[1].len = 0;
} else {
/*
* Command line (1 string) occupies ARGV and
* extends into ENVP.
*/
- struct {
- unsigned long p;
- unsigned long len;
- } cmdline[2] = {
- { .p = arg_start, .len = len1 },
- { .p = env_start, .len = len2 },
- };
+ cmdline[1].p = env_start;
+ cmdline[1].len = len2;
+ }
+
+ {
loff_t pos1 = *pos;
unsigned int i;
@@ -317,44 +291,40 @@ static ssize_t proc_pid_cmdline_read(struct file *file, char __user *buf,
i++;
}
while (i < 2) {
+ unsigned long p;
+ unsigned long len;
+
p = cmdline[i].p + pos1;
len = cmdline[i].len - pos1;
while (count > 0 && len > 0) {
- unsigned int _count, l;
- int nr_read;
- bool final;
-
- _count = min3(count, len, PAGE_SIZE);
- nr_read = access_remote_vm(mm, p, page, _count, FOLL_ANON);
- if (nr_read < 0)
- rv = nr_read;
- if (nr_read <= 0)
- goto out_free_page;
+ unsigned int nr_read, nr_write;
+
+ nr_read = min3(count, len, PAGE_SIZE);
+ nr_read = access_remote_vm(mm, p, page, nr_read, FOLL_ANON);
+ if (nr_read == 0)
+ goto end;
/*
* Command line can be shorter than whole ARGV
* even if last "marker" byte says it is not.
*/
- final = false;
- l = strnlen(page, nr_read);
- if (l < nr_read) {
- nr_read = l;
- final = true;
- }
+ if (c == '\0')
+ nr_write = nr_read;
+ else
+ nr_write = strnlen(page, nr_read);
- if (copy_to_user(buf, page, nr_read)) {
+ if (copy_to_user(buf, page, nr_write)) {
rv = -EFAULT;
goto out_free_page;
}
- p += nr_read;
- len -= nr_read;
- buf += nr_read;
- count -= nr_read;
- rv += nr_read;
+ p += nr_write;
+ len -= nr_write;
+ buf += nr_write;
+ count -= nr_write;
- if (final)
- goto out_free_page;
+ if (nr_write < nr_read)
+ goto end;
}
/* Only first chunk can be read partially. */
@@ -363,12 +333,13 @@ static ssize_t proc_pid_cmdline_read(struct file *file, char __user *buf,
}
}
+end:
+ *pos += buf - buf0;
+ rv = buf - buf0;
out_free_page:
free_page((unsigned long)page);
out_mmput:
mmput(mm);
- if (rv > 0)
- *pos += rv;
return rv;
}
@@ -430,7 +401,6 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
struct stack_trace trace;
unsigned long *entries;
int err;
- int i;
entries = kmalloc(MAX_STACK_TRACE_DEPTH * sizeof(*entries), GFP_KERNEL);
if (!entries)
@@ -443,6 +413,8 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns,
err = lock_trace(task);
if (!err) {
+ unsigned int i;
+
save_stack_trace_tsk(task, &trace);
for (i = 0; i < trace.nr_entries; i++) {
@@ -927,10 +899,10 @@ static ssize_t environ_read(struct file *file, char __user *buf,
if (!mmget_not_zero(mm))
goto free;
- down_read(&mm->mmap_sem);
+ spin_lock(&mm->arg_lock);
env_start = mm->env_start;
env_end = mm->env_end;
- up_read(&mm->mmap_sem);
+ spin_unlock(&mm->arg_lock);
while (count > 0) {
size_t this_len, max_len;
@@ -1784,9 +1756,9 @@ int pid_getattr(const struct path *path, struct kstat *stat,
generic_fillattr(inode, stat);
- rcu_read_lock();
stat->uid = GLOBAL_ROOT_UID;
stat->gid = GLOBAL_ROOT_GID;
+ rcu_read_lock();
task = pid_task(proc_pid(inode), PIDTYPE_PID);
if (task) {
if (!has_pid_permissions(pid, task, HIDEPID_INVISIBLE)) {
@@ -1875,7 +1847,7 @@ const struct dentry_operations pid_dentry_operations =
* by stat.
*/
bool proc_fill_cache(struct file *file, struct dir_context *ctx,
- const char *name, int len,
+ const char *name, unsigned int len,
instantiate_t instantiate, struct task_struct *task, const void *ptr)
{
struct dentry *child, *dir = file->f_path.dentry;
@@ -3251,7 +3223,7 @@ int proc_pid_readdir(struct file *file, struct dir_context *ctx)
iter.task;
iter.tgid += 1, iter = next_tgid(ns, iter)) {
char name[10 + 1];
- int len;
+ unsigned int len;
cond_resched();
if (!has_pid_permissions(ns, iter.task, HIDEPID_INVISIBLE))
@@ -3578,7 +3550,7 @@ static int proc_task_readdir(struct file *file, struct dir_context *ctx)
task;
task = next_tid(task), ctx->pos++) {
char name[10 + 1];
- int len;
+ unsigned int len;
tid = task_pid_nr_ns(task, ns);
len = snprintf(name, sizeof(name), "%u", tid);
if (!proc_fill_cache(file, ctx, name, len,
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 05b9893e9a22..81882a13212d 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -248,7 +248,7 @@ static int proc_readfd_common(struct file *file, struct dir_context *ctx,
struct file *f;
struct fd_data data;
char name[10 + 1];
- int len;
+ unsigned int len;
f = fcheck_files(files, fd);
if (!f)
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 93eb1906c28d..50cb22a08c2f 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -163,7 +163,7 @@ extern loff_t mem_lseek(struct file *, loff_t, int);
/* Lookups */
typedef struct dentry *instantiate_t(struct dentry *,
struct task_struct *, const void *);
-extern bool proc_fill_cache(struct file *, struct dir_context *, const char *, int,
+bool proc_fill_cache(struct file *, struct dir_context *, const char *, unsigned int,
instantiate_t, struct task_struct *, const void *);
/*
diff --git a/fs/proc/page.c b/fs/proc/page.c
index 1491918a33c3..792c78a49174 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -154,6 +154,8 @@ u64 stable_page_flags(struct page *page)
if (PageBalloon(page))
u |= 1 << KPF_BALLOON;
+ if (PageTable(page))
+ u |= 1 << KPF_PGTABLE;
if (page_is_idle(page))
u |= 1 << KPF_IDLE;
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 7e074138d2f2..597969db9e90 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1259,8 +1259,9 @@ static pagemap_entry_t pte_to_pagemap_entry(struct pagemapread *pm,
if (pte_swp_soft_dirty(pte))
flags |= PM_SOFT_DIRTY;
entry = pte_to_swp_entry(pte);
- frame = swp_type(entry) |
- (swp_offset(entry) << MAX_SWAPFILES_SHIFT);
+ if (pm->show_pfn)
+ frame = swp_type(entry) |
+ (swp_offset(entry) << MAX_SWAPFILES_SHIFT);
flags |= PM_SWAP;
if (is_migration_entry(entry))
page = migration_entry_to_page(entry);
@@ -1311,11 +1312,14 @@ static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end,
#ifdef CONFIG_ARCH_ENABLE_THP_MIGRATION
else if (is_swap_pmd(pmd)) {
swp_entry_t entry = pmd_to_swp_entry(pmd);
- unsigned long offset = swp_offset(entry);
+ unsigned long offset;
- offset += (addr & ~PMD_MASK) >> PAGE_SHIFT;
- frame = swp_type(entry) |
- (offset << MAX_SWAPFILES_SHIFT);
+ if (pm->show_pfn) {
+ offset = swp_offset(entry) +
+ ((addr & ~PMD_MASK) >> PAGE_SHIFT);
+ frame = swp_type(entry) |
+ (offset << MAX_SWAPFILES_SHIFT);
+ }
flags |= PM_SWAP;
if (pmd_swp_soft_dirty(pmd))
flags |= PM_SOFT_DIRTY;
@@ -1333,10 +1337,12 @@ static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end,
err = add_to_pagemap(addr, &pme, pm);
if (err)
break;
- if (pm->show_pfn && (flags & PM_PRESENT))
- frame++;
- else if (flags & PM_SWAP)
- frame += (1 << MAX_SWAPFILES_SHIFT);
+ if (pm->show_pfn) {
+ if (flags & PM_PRESENT)
+ frame++;
+ else if (flags & PM_SWAP)
+ frame += (1 << MAX_SWAPFILES_SHIFT);
+ }
}
spin_unlock(ptl);
return err;
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index cec550c8468f..123bf7d516fc 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -62,6 +62,8 @@ struct userfaultfd_ctx {
enum userfaultfd_state state;
/* released */
bool released;
+ /* memory mappings are changing because of non-cooperative event */
+ bool mmap_changing;
/* mm with one ore more vmas attached to this userfaultfd_ctx */
struct mm_struct *mm;
};
@@ -641,6 +643,7 @@ static void userfaultfd_event_wait_completion(struct userfaultfd_ctx *ctx,
* already released.
*/
out:
+ WRITE_ONCE(ctx->mmap_changing, false);
userfaultfd_ctx_put(ctx);
}
@@ -686,10 +689,12 @@ int dup_userfaultfd(struct vm_area_struct *vma, struct list_head *fcs)
ctx->state = UFFD_STATE_RUNNING;
ctx->features = octx->features;
ctx->released = false;
+ ctx->mmap_changing = false;
ctx->mm = vma->vm_mm;
mmgrab(ctx->mm);
userfaultfd_ctx_get(octx);
+ WRITE_ONCE(octx->mmap_changing, true);
fctx->orig = octx;
fctx->new = ctx;
list_add_tail(&fctx->list, fcs);
@@ -732,6 +737,7 @@ void mremap_userfaultfd_prep(struct vm_area_struct *vma,
if (ctx && (ctx->features & UFFD_FEATURE_EVENT_REMAP)) {
vm_ctx->ctx = ctx;
userfaultfd_ctx_get(ctx);
+ WRITE_ONCE(ctx->mmap_changing, true);
}
}
@@ -772,6 +778,7 @@ bool userfaultfd_remove(struct vm_area_struct *vma,
return true;
userfaultfd_ctx_get(ctx);
+ WRITE_ONCE(ctx->mmap_changing, true);
up_read(&mm->mmap_sem);
msg_init(&ewq.msg);
@@ -815,6 +822,7 @@ int userfaultfd_unmap_prep(struct vm_area_struct *vma,
return -ENOMEM;
userfaultfd_ctx_get(ctx);
+ WRITE_ONCE(ctx->mmap_changing, true);
unmap_ctx->ctx = ctx;
unmap_ctx->start = start;
unmap_ctx->end = end;
@@ -1653,6 +1661,10 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx,
user_uffdio_copy = (struct uffdio_copy __user *) arg;
+ ret = -EAGAIN;
+ if (READ_ONCE(ctx->mmap_changing))
+ goto out;
+
ret = -EFAULT;
if (copy_from_user(&uffdio_copy, user_uffdio_copy,
/* don't copy "copy" last field */
@@ -1674,7 +1686,7 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx,
goto out;
if (mmget_not_zero(ctx->mm)) {
ret = mcopy_atomic(ctx->mm, uffdio_copy.dst, uffdio_copy.src,
- uffdio_copy.len);
+ uffdio_copy.len, &ctx->mmap_changing);
mmput(ctx->mm);
} else {
return -ESRCH;
@@ -1705,6 +1717,10 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx,
user_uffdio_zeropage = (struct uffdio_zeropage __user *) arg;
+ ret = -EAGAIN;
+ if (READ_ONCE(ctx->mmap_changing))
+ goto out;
+
ret = -EFAULT;
if (copy_from_user(&uffdio_zeropage, user_uffdio_zeropage,
/* don't copy "zeropage" last field */
@@ -1721,7 +1737,8 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx,
if (mmget_not_zero(ctx->mm)) {
ret = mfill_zeropage(ctx->mm, uffdio_zeropage.range.start,
- uffdio_zeropage.range.len);
+ uffdio_zeropage.range.len,
+ &ctx->mmap_changing);
mmput(ctx->mm);
} else {
return -ESRCH;
@@ -1900,6 +1917,7 @@ SYSCALL_DEFINE1(userfaultfd, int, flags)
ctx->features = 0;
ctx->state = UFFD_STATE_WAIT_API;
ctx->released = false;
+ ctx->mmap_changing = false;
ctx->mm = current->mm;
/* prevent the mm struct to be freed */
mmgrab(ctx->mm);