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| author |   Chetan Loke <loke.chetan@gmail.com> | 2012-07-31 08:47:13 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2012-07-31 08:47:13 +0200 |
| commit | 01ff5dbc0925d11c8ad76eed3bdd02d0c7e1e0f5 (patch) | |
| tree | 962e8fd1136191e31502dbe5e136b6900a3b2012 /drivers/block | |
| parent | Merge branch 'for-jens' of git://git.drbd.org/linux-drbd into for-3.6/drivers (diff) | |
| download | linux-dev-01ff5dbc0925d11c8ad76eed3bdd02d0c7e1e0f5.tar.xz linux-dev-01ff5dbc0925d11c8ad76eed3bdd02d0c7e1e0f5.zip | |
block/nbd: micro-optimization in nbd request completion
Add in-flight cmds to the tail. That way while searching
(during request completion),we will always get a hit on the
first element.
Signed-off-by: Chetan Loke <loke.chetan@gmail.com>
Acked-by: Paul.Clements@steeleye.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/nbd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 061427a75d37..8957b9f0cfad 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -481,7 +481,7 @@ static void nbd_handle_req(struct nbd_device *nbd, struct request *req) nbd_end_request(req); } else { spin_lock(&nbd->queue_lock); - list_add(&req->queuelist, &nbd->queue_head); + list_add_tail(&req->queuelist, &nbd->queue_head); spin_unlock(&nbd->queue_lock); } |