From: Filipe Manana <fdmanana@gmail.com>
Date: Tue, 18 Mar 2014 17:56:06 +0000 (+0000)
Subject: Btrfs: remove unnecessary inode generation lookup in send
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=425b5dafc8738d3d6d6b05827f40bd32bf04a20b;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

Btrfs: remove unnecessary inode generation lookup in send

No need to search in the send tree for the generation number of the inode,
we already have it in the recorded_ref structure passed to us.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
---

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 646369179697..92d4ae8a8ae6 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -3179,7 +3179,7 @@ static int wait_for_parent_move(struct send_ctx *sctx,
 	int ret;
 	u64 ino = parent_ref->dir;
 	u64 parent_ino_before, parent_ino_after;
-	u64 new_gen, old_gen;
+	u64 old_gen;
 	struct fs_path *path_before = NULL;
 	struct fs_path *path_after = NULL;
 	int len1, len2;
@@ -3197,12 +3197,7 @@ static int wait_for_parent_move(struct send_ctx *sctx,
 	else if (ret < 0)
 		return ret;
 
-	ret = get_inode_info(sctx->send_root, ino, NULL, &new_gen,
-			     NULL, NULL, NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	if (new_gen != old_gen)
+	if (parent_ref->dir_gen != old_gen)
 		return 0;
 
 	path_before = fs_path_alloc();