Commit bafc9ad5 authored by NeilBrown's avatar NeilBrown Committed by Zefan Li

md: make sure everything is freed when dm-raid stops an array.

commit 5eff3c43 upstream.

md_stop() would stop an array, but not free various attached
data structures.
For internal arrays, these are freed later in do_md_stop() or
mddev_put(), but they don't apply for dm-raid arrays.
So get md_stop() to free them, and only all it from dm-raid.
For internal arrays we now call __md_stop.
Reported-by: default avatarmajianpeng <majianpeng@gmail.com>
Signed-off-by: default avatarNeilBrown <neilb@suse.de>
Signed-off-by: default avatarZefan Li <lizefan@huawei.com>
parent 7730b2f9
......@@ -5120,7 +5120,7 @@ void md_stop_writes(struct mddev *mddev)
}
EXPORT_SYMBOL_GPL(md_stop_writes);
void md_stop(struct mddev *mddev)
static void __md_stop(struct mddev *mddev)
{
mddev->ready = 0;
mddev->pers->stop(mddev);
......@@ -5130,6 +5130,18 @@ void md_stop(struct mddev *mddev)
mddev->pers = NULL;
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
}
void md_stop(struct mddev *mddev)
{
/* stop the array and free an attached data structures.
* This is called from dm-raid
*/
__md_stop(mddev);
bitmap_destroy(mddev);
if (mddev->bio_set)
bioset_free(mddev->bio_set);
}
EXPORT_SYMBOL_GPL(md_stop);
static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
......@@ -5190,7 +5202,7 @@ static int do_md_stop(struct mddev * mddev, int mode,
set_disk_ro(disk, 0);
__md_stop_writes(mddev);
md_stop(mddev);
__md_stop(mddev);
mddev->queue->merge_bvec_fn = NULL;
mddev->queue->backing_dev_info.congested_fn = NULL;
......
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