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[v4,02/10] Btrfs: remove unnecessary code of stripe_index assignment in __btrfs_map_block

Message ID 1417523971-15553-3-git-send-email-miaox@cn.fujitsu.com (mailing list archive)
State Accepted
Headers show

Commit Message

Miao Xie Dec. 2, 2014, 12:39 p.m. UTC 
From: Zhao Lei <zhaolei@cn.fujitsu.com>

stripe_index's value was set again in latter line:
stripe_index = 0;

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
---
Changelog v1 -> v4:
- None.
---
 fs/btrfs/volumes.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
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Patch

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 6f80aef..eeb5b31 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5172,9 +5172,7 @@  static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
 
 			/* push stripe_nr back to the start of the full stripe */
 			stripe_nr = raid56_full_stripe_start;
-			do_div(stripe_nr, stripe_len);
-
-			stripe_index = do_div(stripe_nr, nr_data_stripes(map));
+			do_div(stripe_nr, stripe_len * nr_data_stripes(map));
 
 			/* RAID[56] write or recovery. Return all stripes */
 			num_stripes = map->num_stripes;