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| author | Tao Ma <boyu.mt@taobao.com> | 2011-04-19 13:50:40 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-04-19 13:51:53 +0200 |
| commit | 60735b6362f29b52b5635a2dfa9ab5ad39948345 (patch) | |
| tree | e590ce1697965a4ccb48af5cb729c64452cdcc6f /block/blk-sysfs.c | |
| parent | ed5302d3c25006a9edc7a7fbea97a30483f89ef7 (diff) | |
| download | lwn-60735b6362f29b52b5635a2dfa9ab5ad39948345.tar.gz lwn-60735b6362f29b52b5635a2dfa9ab5ad39948345.zip | |
block: Remove the extra check in queue_requests_store
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 <boyu.mt@taobao.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/blk-sysfs.c')
| -rw-r--r-- | block/blk-sysfs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 5d696adbc4dc..bd236313f35d 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -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]); } |