The argument index is not used in btrfs_lookup_inode_extref(),
so remove it.
And adjust positions its arguments to make it consistent with
kernel part.

No functional change.

Fixes: 260675657767 ("btrfs-progs: Import btrfs_insert/del/lookup_extref() 
functions.")
Signed-off-by: Su Yue <suy.f...@cn.fujitsu.com>
Reviewed-by: Qu Wenruo <w...@suse.com>
---
 ctree.h      | 9 +++++----
 inode-item.c | 9 +++++----
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/ctree.h b/ctree.h
index 2a2437070ef9..541055a335c2 100644
--- a/ctree.h
+++ b/ctree.h
@@ -2710,10 +2710,11 @@ int btrfs_insert_inode(struct btrfs_trans_handle 
*trans, struct btrfs_root
 int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
                       *root, struct btrfs_path *path,
                       struct btrfs_key *location, int mod);
-struct btrfs_inode_extref *btrfs_lookup_inode_extref(struct btrfs_trans_handle
-               *trans, struct btrfs_path *path, struct btrfs_root *root,
-               u64 ino, u64 parent_ino, u64 index, const char *name,
-               int namelen, int ins_len);
+struct btrfs_inode_extref *
+btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
+                         struct btrfs_root *root, struct btrfs_path *path,
+                         const char *name, int namelen, u64 ino,
+                         u64 parent_ino, int ins_len);
 int btrfs_del_inode_extref(struct btrfs_trans_handle *trans,
                           struct btrfs_root *root,
                           const char *name, int name_len,
diff --git a/inode-item.c b/inode-item.c
index 1cc106670cd4..ca0052bc2f87 100644
--- a/inode-item.c
+++ b/inode-item.c
@@ -227,10 +227,11 @@ static int btrfs_find_name_in_ext_backref(struct 
btrfs_path *path,
        return 0;
 }
 
-struct btrfs_inode_extref *btrfs_lookup_inode_extref(struct btrfs_trans_handle
-               *trans, struct btrfs_path *path, struct btrfs_root *root,
-               u64 ino, u64 parent_ino, u64 index, const char *name,
-               int namelen, int ins_len)
+struct btrfs_inode_extref *
+btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
+                         struct btrfs_root *root, struct btrfs_path *path,
+                         const char *name, int namelen, u64 ino,
+                         u64 parent_ino, int ins_len)
 {
        struct btrfs_key key;
        struct btrfs_inode_extref *extref;
-- 
2.17.1



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