fs: change d_hash for rcu-walk

Change d_hash so it may be called from lock-free RCU lookups. See similar
patch for d_compare for details.

For in-tree filesystems, this is just a mechanical change.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>

2 files changed, 4 insertions, 3 deletions

diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index c60133f0d8e4..88bfe686ac00 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -700,9 +700,10 @@ const struct dentry_operations cifs_dentry_ops = {
 /* d_delete:       cifs_d_delete,      */ /* not needed except for debugging */
 };
 
-static int cifs_ci_hash(struct dentry *dentry, struct qstr *q)
+static int cifs_ci_hash(const struct dentry *dentry, const struct inode *inode,
+                struct qstr *q)
 {
-        struct nls_table *codepage = CIFS_SB(dentry->d_inode->i_sb)->local_nls;
+        struct nls_table *codepage = CIFS_SB(dentry->d_sb)->local_nls;
         unsigned long hash;
         int i;
 
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index a73eb9f4bdaf..ee463aeca0b0 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -79,7 +79,7 @@ cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
         cFYI(1, "For %s", name->name);
 
         if (parent->d_op && parent->d_op->d_hash)
-                parent->d_op->d_hash(parent, name);
+                parent->d_op->d_hash(parent, parent->d_inode, name);
         else
                 name->hash = full_name_hash(name->name, name->len);