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lightnvm: break the loop when rqd is not null

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Break the loop when rqd is not null to reduce
an unnecessary schedule.

Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Wenwei Tao 2016-07-07 09:54:07 +02:00 committed by Jens Axboe
parent f98d9ca17f
commit 0de2415bb7
1 changed files with 5 additions and 2 deletions
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7
drivers/lightnvm/rrpc.c
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@ -96,10 +96,13 @@ static void rrpc_discard(struct rrpc *rrpc, struct bio *bio)
sector_t len = bio->bi_iter.bi_size / RRPC_EXPOSED_PAGE_SIZE;
struct nvm_rq *rqd;
do {
while (1) {
rqd = rrpc_inflight_laddr_acquire(rrpc, slba, len);
if (rqd)
break;
schedule();
} while (!rqd);
}
if (IS_ERR(rqd)) {
pr_err("rrpc: unable to acquire inflight IO\n");