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>

1 files changed, 2 insertions, 5 deletions

diff --git a/fs/hpfs/dentry.c b/fs/hpfs/dentry.c
index 05d4816e4e77..fa27980f2229 100644
--- a/fs/hpfs/dentry.c
+++ b/fs/hpfs/dentry.c
@@ -12,8 +12,7 @@
  * Note: the dentry argument is the parent dentry.
  */
 
-static int hpfs_hash_dentry(const struct dentry *dentry, const struct inode *inode,
-                struct qstr *qstr)
+static int hpfs_hash_dentry(const struct dentry *dentry, struct qstr *qstr)
 {
         unsigned long    hash;
         int              i;
@@ -35,9 +34,7 @@ static int hpfs_hash_dentry(const struct dentry *dentry, const struct inode *ino
         return 0;
 }
 
-static int hpfs_compare_dentry(const struct dentry *parent,
-                const struct inode *pinode,
-                const struct dentry *dentry, const struct inode *inode,
+static int hpfs_compare_dentry(const struct dentry *parent, const struct dentry *dentry,
                 unsigned int len, const char *str, const struct qstr *name)
 {
         unsigned al = len;