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lightnvm: pblk: remove target using async. I/Os

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When removing a pblk instance, pad the current line using asynchronous
I/O. This reduces the removal time from ~1 minute in the worst case to a
couple of seconds.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Javier González
2017-06-30 17:56:40 +02:00
committed by Jens Axboe
parent de54e703a4
commit ee8d5c1ad5
6 changed files with 122 additions and 73 deletions
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9
drivers/lightnvm/pblk-init.c
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@@ -841,6 +841,15 @@ static int pblk_writer_init(struct pblk *pblk)
static void pblk_writer_stop(struct pblk *pblk)
{
/* The pipeline must be stopped and the write buffer emptied before the
* write thread is stopped
*/
WARN(pblk_rb_read_count(&pblk->rwb),
"Stopping not fully persisted write buffer\n");
WARN(pblk_rb_sync_count(&pblk->rwb),
"Stopping not fully synced write buffer\n");
if (pblk->writer_ts)
kthread_stop(pblk->writer_ts);
del_timer(&pblk->wtimer);