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Btrfs: btrfs_rm_dev_replace_blocked(): Use wait_event() 

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
hifive-unleashed-5.1
Zhao Lei 2015-01-20 15:11:38 +08:00 committed by Chris Mason
parent 09dd7a01c3
commit 7653947fe6
1 changed files with 2 additions and 11 deletions
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13
fs/btrfs/dev-replace.c
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@ -440,18 +440,9 @@ leave:
*/
static void btrfs_rm_dev_replace_blocked(struct btrfs_fs_info *fs_info)
{
s64 writers;
DEFINE_WAIT(wait);
set_bit(BTRFS_FS_STATE_DEV_REPLACING, &fs_info->fs_state);
do {
prepare_to_wait(&fs_info->replace_wait, &wait,
TASK_UNINTERRUPTIBLE);
writers = percpu_counter_sum(&fs_info->bio_counter);
if (writers)
schedule();
finish_wait(&fs_info->replace_wait, &wait);
} while (writers);
wait_event(fs_info->replace_wait, !percpu_counter_sum(
&fs_info->bio_counter));
}
/*