[PATCH v4 01/10] Btrfs: remove noused bbio_ret in __btrfs_map_block in condition

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From: Zhao Lei <zhaolei@xxxxxxxxxxxxxx>

bbio_ret in this condition is always !NULL because previous code
already have a check-and-skip:
4908 if (!bbio_ret)
4909     goto out;

Signed-off-by: Zhao Lei <zhaolei@xxxxxxxxxxxxxx>
Signed-off-by: Miao Xie <miaox@xxxxxxxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxx>
---
Changelog v1 -> v4:
- None.
---
 fs/btrfs/volumes.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 54db1fb..6f80aef 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5167,8 +5167,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
 				BTRFS_BLOCK_GROUP_RAID6)) {
 		u64 tmp;
 
-		if (bbio_ret && ((rw & REQ_WRITE) || mirror_num > 1)
-		    && raid_map_ret) {
+		if (raid_map_ret && ((rw & REQ_WRITE) || mirror_num > 1)) {
 			int i, rot;
 
 			/* push stripe_nr back to the start of the full stripe */
-- 
1.9.3

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