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bcache: recal cached_dev_sectors on detach 

Recal cached_dev_sectors on cached_dev detached, as recal done on
cached_dev attached.

Update the cached_dev_sectors before bcache_device_detach called
as bcache_device_detach will set bcache_device->c to NULL.

Signed-off-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Shenghui Wang 2018-10-08 20:41:15 +08:00 committed by Jens Axboe
parent 2d6cb6edd2
commit 46010141da
1 changed files with 1 additions and 0 deletions
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drivers/md/bcache/super.c
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@ -1009,6 +1009,7 @@ static void cached_dev_detach_finish(struct work_struct *w)
bch_write_bdev_super(dc, &cl);
closure_sync(&cl);
calc_cached_dev_sectors(dc->disk.c);
bcache_device_detach(&dc->disk);
list_move(&dc->list, &uncached_devices);