提交 7653947f 编写于 作者: Z Zhao Lei 提交者: Chris Mason

Btrfs: btrfs_rm_dev_replace_blocked(): Use wait_event()

Signed-off-by: NZhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: NMiao Xie <miaox@cn.fujitsu.com>
Signed-off-by: NChris Mason <clm@fb.com>
上级 09dd7a01
......@@ -440,18 +440,9 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
*/
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));
}
/*
......
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