Commit 99890a3b authored Mar 02, 2011 by Al Viro

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>

parent babfe560

fs/reiserfs/namei.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -771,7 +771,7 @@ static int reiserfs_mkdir(struct inode dir, struct dentry dentry, int mode)
		EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE,
		dentry, inode, &security);
		if (retval) {
		dir->i_nlink--;
		DEC_DIR_INODE_NLINK(dir)
		goto out_failed;
		}

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