diff options
| author |   Miklos Szeredi <mszeredi@redhat.com> | 2016-05-11 01:16:37 +0200 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2016-05-10 23:56:28 -0400 |
| commit | 3c9fe8cdff1b889a059a30d22f130372f2b3885f (patch) | |
| tree | 29f9b50b15ebbea097686abd2b0a71dedfcc128d /include/linux/namei.h | |
| parent | vfs: rename: check backing inode being equal (diff) | |
| download | wireguard-linux-3c9fe8cdff1b889a059a30d22f130372f2b3885f.tar.xz wireguard-linux-3c9fe8cdff1b889a059a30d22f130372f2b3885f.zip | |
vfs: add lookup_hash() helper
Overlayfs needs lookup without inode_permission() and already has the name
hash (in form of dentry->d_name on overlayfs dentry). It also doesn't
support filesystems with d_op->d_hash() so basically it only needs
the actual hashed lookup from lookup_one_len_unlocked()
So add a new helper that does unlocked lookup of a hashed name.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'include/linux/namei.h')
| -rw-r--r-- | include/linux/namei.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/namei.h b/include/linux/namei.h index 77d01700daf7..ec5ec2818a28 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -79,6 +79,8 @@ extern int kern_path_mountpoint(int, const char *, struct path *, unsigned int); extern struct dentry *lookup_one_len(const char *, struct dentry *, int); extern struct dentry *lookup_one_len_unlocked(const char *, struct dentry *, int); +struct qstr; +extern struct dentry *lookup_hash(const struct qstr *, struct dentry *); extern int follow_down_one(struct path *); extern int follow_down(struct path *); |