fs: implement iget_locked and iget_failed

Implement in fs core rather than using a private version in UBIFS.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 24 insertions, 0 deletions

diff --git a/fs/fs.c b/fs/fs.c
index 5bfc6f8b78..12851b7ae3 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -1051,6 +1051,30 @@ struct inode *new_inode(struct super_block *sb)
 	return inode;
 }
 
+struct inode *iget_locked(struct super_block *sb, unsigned long ino)
+{
+	struct inode *inode;
+
+	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
+		if (inode->i_ino == ino)
+			return iget(inode);
+	}
+
+	inode = new_inode(sb);
+	if (!inode)
+		return NULL;
+
+	inode->i_state = I_NEW;
+	inode->i_ino = ino;
+
+	return inode;
+}
+
+void iget_failed(struct inode *inode)
+{
+	iput(inode);
+}
+
 void iput(struct inode *inode)
 {
 	if (!inode->i_count)