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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-21 15:22:44 -0700
committerAl Viro <viro@zeniv.linux.org.uk>2013-06-29 12:57:36 +0400
commitda53be12bbb4fabbe2e9f6f908de0cf478b5161d (patch)
treea0436fb462a7b16c82e58336e17c55b814f7be6b /fs/namei.c
parent642b704cd7a29be0b8900971eb525086c1c995b7 (diff)
Don't pass inode to ->d_hash() and ->d_compare()
Instances either don't look at it at all (the majority of cases) or only want it to find the superblock (which can be had as dentry->d_sb). A few cases that want more are actually safe with dentry->d_inode - the only precaution needed is the check that it hadn't been replaced with NULL by rmdir() or by overwriting rename(), which case should be simply treated as cache miss. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 66998b06d822..b2beee7a733f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1352,7 +1352,7 @@ static int lookup_fast(struct nameidata *nd,
*/
if (nd->flags & LOOKUP_RCU) {
unsigned seq;
- dentry = __d_lookup_rcu(parent, &nd->last, &seq, nd->inode);
+ dentry = __d_lookup_rcu(parent, &nd->last, &seq);
if (!dentry)
goto unlazy;
@@ -1787,8 +1787,7 @@ static int link_path_walk(const char *name, struct nameidata *nd)
struct dentry *parent = nd->path.dentry;
nd->flags &= ~LOOKUP_JUMPED;
if (unlikely(parent->d_flags & DCACHE_OP_HASH)) {
- err = parent->d_op->d_hash(parent, nd->inode,
- &this);
+ err = parent->d_op->d_hash(parent, &this);
if (err < 0)
break;
}
@@ -2121,7 +2120,7 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len)
* to use its own hash..
*/
if (base->d_flags & DCACHE_OP_HASH) {
- int err = base->d_op->d_hash(base, base->d_inode, &this);
+ int err = base->d_op->d_hash(base, &this);
if (err < 0)
return ERR_PTR(err);
}