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bcache: correct dirty data statistics

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commit 2e17a262a2 upstream.

When bcache device is clean, dirty keys may still exist after
journal replay, so we need to count these dirty keys even
device in clean status, otherwise after writeback, the amount
of dirty data would be incorrect.

Signed-off-by: Tang Junhui <tang.junhui.linux@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tang Junhui 2018-10-08 20:41:12 +08:00 committed by Greg Kroah-Hartman
parent 32870e2bb6
commit 9e9f19efcb
1 changed files with 2 additions and 1 deletions
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3
drivers/md/bcache/super.c
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@ -1148,11 +1148,12 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
}
if (BDEV_STATE(&dc->sb) == BDEV_STATE_DIRTY) {
bch_sectors_dirty_init(&dc->disk);
atomic_set(&dc->has_dirty, 1);
bch_writeback_queue(dc);
}
bch_sectors_dirty_init(&dc->disk);
bch_cached_dev_run(dc);
bcache_device_link(&dc->disk, c, "bdev");
atomic_inc(&c->attached_dev_nr);