dcache: subtract d_hash_shift from 32 in advance

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/dcache.c b/fs/dcache.c
index 17e6b84b9656..d4f5b52d99be 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -110,7 +110,7 @@ static struct hlist_bl_head *dentry_hashtable __read_mostly;
 
 static inline struct hlist_bl_head *d_hash(unsigned int hash)
 {
-        return dentry_hashtable + (hash >> (32 - d_hash_shift));
+        return dentry_hashtable + (hash >> d_hash_shift);
 }
 
 #define IN_LOOKUP_SHIFT 10
@@ -3593,6 +3593,7 @@ static void __init dcache_init_early(void)
                                         &d_hash_mask,
                                         0,
                                         0);
+        d_hash_shift = 32 - d_hash_shift;
 }
 
 static void __init dcache_init(void)
@@ -3619,6 +3620,7 @@ static void __init dcache_init(void)
                                         &d_hash_mask,
                                         0,
                                         0);
+        d_hash_shift = 32 - d_hash_shift;
 }
 
 /* SLAB cache for __getname() consumers */