UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

blk-mq: Make bt_clear_tag() easier to read 

Eliminate a backwards goto statement from bt_clear_tag().

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Bart Van Assche 2014-10-07 08:45:21 -06:00 committed by Jens Axboe
parent abab13b5c4
commit 9d8f0bcca6
1 changed files with 2 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
block/blk-mq-tag.c
View File

@ -351,15 +351,12 @@ static void bt_clear_tag(struct blk_mq_bitmap_tags *bt, unsigned int tag)
return;
wait_cnt = atomic_dec_return(&bs->wait_cnt);
if (unlikely(wait_cnt < 0))
wait_cnt = atomic_inc_return(&bs->wait_cnt);
if (wait_cnt == 0) {
wake:
atomic_add(bt->wake_cnt, &bs->wait_cnt);
bt_index_atomic_inc(&bt->wake_index);
wake_up(&bs->wait);
} else if (wait_cnt < 0) {
wait_cnt = atomic_inc_return(&bs->wait_cnt);
if (!wait_cnt)
goto wake;
}
}