From: Zhao Lei <zhaolei@xxxxxxxxxxxxxx>
1: Remove unused DEFINE_WAIT(wait)
2: Add likely() for BTRFS_FS_STATE_DEV_REPLACING condition
3: Use a look instead of goto
Signed-off-by: Zhao Lei <zhaolei@xxxxxxxxxxxxxx>
---
fs/btrfs/dev-replace.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index ca6a3a3..92109b7 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -932,15 +932,15 @@ void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount)
void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info)
{
- DEFINE_WAIT(wait);
-again:
- percpu_counter_inc(&fs_info->bio_counter);
- if (test_bit(BTRFS_FS_STATE_DEV_REPLACING, &fs_info->fs_state)) {
+ while (1) {
+ percpu_counter_inc(&fs_info->bio_counter);
+ if (likely(!test_bit(BTRFS_FS_STATE_DEV_REPLACING,
+ &fs_info->fs_state)))
+ break;
+
btrfs_bio_counter_dec(fs_info);
wait_event(fs_info->replace_wait,
!test_bit(BTRFS_FS_STATE_DEV_REPLACING,
&fs_info->fs_state));
- goto again;
}
-
}
--
1.8.5.1
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