Commit 4d93bc3e authored by Al Viro's avatar Al Viro
Browse files

gfs2_atomic_open(): skip lookups on hashed dentry 



hashed dentry can be passed to ->atomic_open() only if
a) it has just passed revalidation and
b) it's negative

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 18c85d09

fs/gfs2/inode.c

+5 −0
Original line number Diff line number Diff line
@@ -1244,6 +1244,9 @@ static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry, 
	struct dentry *d;

	bool excl = !!(flags & O_EXCL);



	if (!d_unhashed(dentry))

		goto skip_lookup;



	d = __gfs2_lookup(dir, dentry, file, opened);

	if (IS_ERR(d))

		return PTR_ERR(d);
@@ -1260,6 +1263,8 @@ static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry, 
	}



	BUG_ON(d != NULL);



skip_lookup:

	if (!(flags & O_CREAT))

		return -ENOENT;