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block: Remove the extra check in queue_requests_store

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In queue_requests_store, the code looks like
	if (rl->count[BLK_RW_SYNC] >= q->nr_requests) {
		blk_set_queue_full(q, BLK_RW_SYNC);
	} else if (rl->count[BLK_RW_SYNC]+1 <= q->nr_requests) {
		blk_clear_queue_full(q, BLK_RW_SYNC);
		wake_up(&rl->wait[BLK_RW_SYNC]);
	}
If we don't satify the situation of "if", we can get that
rl->count[BLK_RW_SYNC} < q->nr_quests. It is the same as
rl->count[BLK_RW_SYNC]+1 <= q->nr_requests.
All the "else" should satisfy the "else if" check so it isn't
needed actually.

Signed-off-by: Tao Ma <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Tao Ma 2011-04-19 13:50:40 +02:00 • committed by Jens Axboe
commit 60735b6362
1 changed files with 2 additions and 2 deletions
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4
block/blk-sysfs.c
View file

@ -66,14 +66,14 @@ queue_requests_store(struct request_queue *q, const char *page, size_t count)
if (rl->count[BLK_RW_SYNC] >= q->nr_requests) {
blk_set_queue_full(q, BLK_RW_SYNC);
} else if (rl->count[BLK_RW_SYNC]+1 <= q->nr_requests) {
} else {
blk_clear_queue_full(q, BLK_RW_SYNC);
wake_up(&rl->wait[BLK_RW_SYNC]);
}
if (rl->count[BLK_RW_ASYNC] >= q->nr_requests) {
blk_set_queue_full(q, BLK_RW_ASYNC);
} else if (rl->count[BLK_RW_ASYNC]+1 <= q->nr_requests) {
} else {
blk_clear_queue_full(q, BLK_RW_ASYNC);
wake_up(&rl->wait[BLK_RW_ASYNC]);
}