[PATCH 03/17] btrfs: use btrfs_crc32c() instead of btrfs_extref_hash()

[Johannes Thumshirn <jthumshirn@suse.de>]

Like btrfs_crc32c() btrfs_extref_hash() is only a shim wrapper over the
crc32c() library function. So we can just use btrfs_crc32c() instead of
btrfs_extref_hash().

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 fs/btrfs/ctree.h      | 9 ---------
 fs/btrfs/inode-item.c | 6 +++---
 fs/btrfs/tree-log.c   | 6 +++---
 3 files changed, 6 insertions(+), 15 deletions(-)

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index d85541f13f65..a3479a4e4f4d 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2659,15 +2659,6 @@ static inline u64 btrfs_name_hash(const char *name, int len)
        return crc32c((u32)~1, name, len);
 }
 
-/*
- * Figure the key offset of an extended inode ref
- */
-static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name,
-                                   int len)
-{
-       return (u64) crc32c(parent_objectid, name, len);
-}
-
 static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
 {
 	return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) &&
diff --git a/fs/btrfs/inode-item.c b/fs/btrfs/inode-item.c
index 30d62ef918b9..d2b2a64a1553 100644
--- a/fs/btrfs/inode-item.c
+++ b/fs/btrfs/inode-item.c
@@ -91,7 +91,7 @@ btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
 
 	key.objectid = inode_objectid;
 	key.type = BTRFS_INODE_EXTREF_KEY;
-	key.offset = btrfs_extref_hash(ref_objectid, name, name_len);
+	key.offset = (u64) btrfs_crc32c(ref_objectid, name, name_len);
 
 	ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow);
 	if (ret < 0)
@@ -123,7 +123,7 @@ static int btrfs_del_inode_extref(struct btrfs_trans_handle *trans,
 
 	key.objectid = inode_objectid;
 	key.type = BTRFS_INODE_EXTREF_KEY;
-	key.offset = btrfs_extref_hash(ref_objectid, name, name_len);
+	key.offset = (u64) btrfs_crc32c(ref_objectid, name, name_len);
 
 	path = btrfs_alloc_path();
 	if (!path)
@@ -272,7 +272,7 @@ static int btrfs_insert_inode_extref(struct btrfs_trans_handle *trans,
 
 	key.objectid = inode_objectid;
 	key.type = BTRFS_INODE_EXTREF_KEY;
-	key.offset = btrfs_extref_hash(ref_objectid, name, name_len);
+	key.offset = (u64) btrfs_crc32c(ref_objectid, name, name_len);
 
 	path = btrfs_alloc_path();
 	if (!path)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 6adcd8a2c5c7..f01c6e1a15ed 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1111,7 +1111,7 @@ static inline int __add_inode_ref(struct btrfs_trans_handle *trans,
 
 			search_key.objectid = inode_objectid;
 			search_key.type = BTRFS_INODE_EXTREF_KEY;
-			search_key.offset = btrfs_extref_hash(parent_objectid,
+			search_key.offset = (u64) btrfs_crc32c(parent_objectid,
 							      victim_name,
 							      victim_name_len);
 			ret = 0;
@@ -1323,7 +1323,7 @@ static int btrfs_inode_ref_exists(struct inode *inode, struct inode *dir,
 	if (key.type == BTRFS_INODE_REF_KEY)
 		key.offset = parent_id;
 	else
-		key.offset = btrfs_extref_hash(parent_id, name, namelen);
+		key.offset = (u64) btrfs_crc32c(parent_id, name, namelen);
 
 	ret = btrfs_search_slot(NULL, BTRFS_I(inode)->root, &key, path, 0, 0);
 	if (ret < 0)
@@ -1901,7 +1901,7 @@ static bool name_in_log_ref(struct btrfs_root *log_root,
 		return true;
 
 	search_key.type = BTRFS_INODE_EXTREF_KEY;
-	search_key.offset = btrfs_extref_hash(dirid, name, name_len);
+	search_key.offset = (u64) btrfs_crc32c(dirid, name, name_len);
 	if (backref_in_log(log_root, &search_key, dirid, name, name_len))
 		return true;
 
-- 
2.16.4