diff options
| -rw-r--r-- | block/ll_rw_blk.c | 24 | ||||
| -rw-r--r-- | drivers/ide/ide-cd.c | 10 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 1 |
3 files changed, 0 insertions, 35 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c index c182c9f4b2c..c44d6fe9f6c 100644 --- a/block/ll_rw_blk.c +++ b/block/ll_rw_blk.c @@ -2734,30 +2734,6 @@ static inline int attempt_front_merge(request_queue_t *q, struct request *rq) return 0; } -/** - * blk_attempt_remerge - attempt to remerge active head with next request - * @q: The &request_queue_t belonging to the device - * @rq: The head request (usually) - * - * Description: - * For head-active devices, the queue can easily be unplugged so quickly - * that proper merging is not done on the front request. This may hurt - * performance greatly for some devices. The block layer cannot safely - * do merging on that first request for these queues, but the driver can - * call this function and make it happen any way. Only the driver knows - * when it is safe to do so. - **/ -void blk_attempt_remerge(request_queue_t *q, struct request *rq) -{ - unsigned long flags; - - spin_lock_irqsave(q->queue_lock, flags); - attempt_back_merge(q, rq); - spin_unlock_irqrestore(q->queue_lock, flags); -} - -EXPORT_SYMBOL(blk_attempt_remerge); - static void init_request_from_bio(struct request *req, struct bio *bio) { req->flags |= REQ_CMD; diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index d31117eb95a..e4d55ad32d2 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -1332,8 +1332,6 @@ static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block) if (cdrom_read_from_buffer(drive)) return ide_stopped; - blk_attempt_remerge(drive->queue, rq); - /* Clear the local sector buffer. */ info->nsectors_buffered = 0; @@ -1874,14 +1872,6 @@ static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq) return ide_stopped; } - /* - * for dvd-ram and such media, it's a really big deal to get - * big writes all the time. so scour the queue and attempt to - * remerge requests, often the plugging will not have had time - * to do this properly - */ - blk_attempt_remerge(drive->queue, rq); - info->nsectors_buffered = 0; /* use dma, if possible. we don't need to check more, since we diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index fb098537742..96b23399168 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -592,7 +592,6 @@ extern void generic_make_request(struct bio *bio); extern void blk_put_request(struct request *); extern void __blk_put_request(request_queue_t *, struct request *); extern void blk_end_sync_rq(struct request *rq, int error); -extern void blk_attempt_remerge(request_queue_t *, struct request *); extern struct request *blk_get_request(request_queue_t *, int, gfp_t); extern void blk_insert_request(request_queue_t *, struct request *, int, void *); extern void blk_requeue_request(request_queue_t *, struct request *); |