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fix reiserfs mkdir() breakage 

if directory has so many subdirectories that its link count is set
to 1 (i.e. "can't tell accurately") and reiserfs_new_inode() fails,
we shouldn't decrement the parent's link count in cleanup path;
that's what DEC_DIR_INODE_NLINK() is for.  As it is, we end up
with parent suddenly getting zero i_nlink, with very unpleasant
effects.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-03-02 09:35:13 -05:00
parent babfe56046
commit 99890a3be1
1 changed files with 1 additions and 1 deletions
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2
fs/reiserfs/namei.c
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@ -771,7 +771,7 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE, EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE,
dentry, inode, &security); dentry, inode, &security);
if (retval) { if (retval) {
dir->i_nlink--; DEC_DIR_INODE_NLINK(dir)
goto out_failed; goto out_failed;
} }