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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-09-12 18:21:05 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-10-09 02:39:15 -0400 |
| commit | 4d93bc3e81736ce55c79d9cae743bab4f89b4f9c (patch) | |
| tree | 8cabe67f17051e2f837bf3a8839afde800a7c3de /fs/gfs2 | |
| parent | 18c85d09dcd14342cd4891d016f4086095160573 (diff) | |
| download | op-kernel-dev-4d93bc3e81736ce55c79d9cae743bab4f89b4f9c.zip op-kernel-dev-4d93bc3e81736ce55c79d9cae743bab4f89b4f9c.tar.gz | |
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: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/inode.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index fc8ac2e..8108b4f 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -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; |
