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Commit 7653947f authored by Zhao Lei's avatar Zhao Lei Committed by Chris Mason
Browse files

Btrfs: btrfs_rm_dev_replace_blocked(): Use wait_event() 



Signed-off-by: default avatarZhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: default avatarMiao Xie <miaox@cn.fujitsu.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent 09dd7a01

fs/btrfs/dev-replace.c

+2 −11
Original line number Diff line number Diff line
@@ -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));

}



/*