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| author | Amir Goldstein <amir73il@gmail.com> | 2020-07-22 15:58:42 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2020-07-27 23:16:16 +0200 |
| commit | 957f7b472c6b6de4214bf5144b811ab83a9b9465 (patch) | |
| tree | 8800b6b381d4da5603e6989c03948128ebf10483 /fs/notify | |
| parent | 40a100d3adc1ad7f0a34875468c499fcecd20ba4 (diff) | |
| download | linux-957f7b472c6b6de4214bf5144b811ab83a9b9465.tar.gz linux-957f7b472c6b6de4214bf5144b811ab83a9b9465.tar.xz | |
inotify: do not set FS_EVENT_ON_CHILD in non-dir mark mask
FS_EVENT_ON_CHILD has currently no meaning for non-dir inode marks. In
the following patches we want to use that bit to mean that mark's
notification group cares about parent and name information. So stop
setting FS_EVENT_ON_CHILD for non-dir marks.
Link: https://lore.kernel.org/r/20200722125849.17418-3-amir73il@gmail.com
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
| -rw-r--r-- | fs/notify/inotify/inotify_user.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 5385d5817dd9..186722ba3894 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -75,15 +75,17 @@ struct ctl_table inotify_table[] = { }; #endif /* CONFIG_SYSCTL */ -static inline __u32 inotify_arg_to_mask(u32 arg) +static inline __u32 inotify_arg_to_mask(struct inode *inode, u32 arg) { __u32 mask; /* - * everything should accept their own ignored, cares about children, - * and should receive events when the inode is unmounted + * Everything should accept their own ignored and should receive events + * when the inode is unmounted. All directories care about children. */ - mask = (FS_IN_IGNORED | FS_EVENT_ON_CHILD | FS_UNMOUNT); + mask = (FS_IN_IGNORED | FS_UNMOUNT); + if (S_ISDIR(inode->i_mode)) + mask |= FS_EVENT_ON_CHILD; /* mask off the flags used to open the fd */ mask |= (arg & (IN_ALL_EVENTS | IN_ONESHOT | IN_EXCL_UNLINK)); @@ -512,7 +514,7 @@ static int inotify_update_existing_watch(struct fsnotify_group *group, int create = (arg & IN_MASK_CREATE); int ret; - mask = inotify_arg_to_mask(arg); + mask = inotify_arg_to_mask(inode, arg); fsn_mark = fsnotify_find_mark(&inode->i_fsnotify_marks, group); if (!fsn_mark) @@ -565,7 +567,7 @@ static int inotify_new_watch(struct fsnotify_group *group, struct idr *idr = &group->inotify_data.idr; spinlock_t *idr_lock = &group->inotify_data.idr_lock; - mask = inotify_arg_to_mask(arg); + mask = inotify_arg_to_mask(inode, arg); tmp_i_mark = kmem_cache_alloc(inotify_inode_mark_cachep, GFP_KERNEL); if (unlikely(!tmp_i_mark)) |