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| author | David S. Miller <davem@davemloft.net> | 2010-08-16 23:09:34 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-08-16 23:09:34 +0200 |
| commit | 300a103d1504134f8c4a7e831f995e917ea9b1e4 (patch) | |
| tree | 7f94d5fff513d132bd0b57a9e3bd96c4cc80d707 /drivers/mmc/card/queue.c | |
| parent | sparc: Really fix "console=" for serial consoles. (diff) | |
| parent | Linux 2.6.36-rc1 (diff) | |
| download | linux-300a103d1504134f8c4a7e831f995e917ea9b1e4.tar.xz linux-300a103d1504134f8c4a7e831f995e917ea9b1e4.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/mmc/card/queue.c')
| -rw-r--r-- | drivers/mmc/card/queue.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index d6ded247d941..e876678176be 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -30,9 +30,9 @@ static int mmc_prep_request(struct request_queue *q, struct request *req) { /* - * We only like normal block requests. + * We only like normal block requests and discards. */ - if (!blk_fs_request(req)) { + if (req->cmd_type != REQ_TYPE_FS && !(req->cmd_flags & REQ_DISCARD)) { blk_dump_rq_flags(req, "MMC bad request"); return BLKPREP_KILL; } @@ -128,8 +128,23 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock mq->req = NULL; blk_queue_prep_rq(mq->queue, mmc_prep_request); - blk_queue_ordered(mq->queue, QUEUE_ORDERED_DRAIN, NULL); + blk_queue_ordered(mq->queue, QUEUE_ORDERED_DRAIN); queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mq->queue); + if (mmc_can_erase(card)) { + queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mq->queue); + mq->queue->limits.max_discard_sectors = UINT_MAX; + if (card->erased_byte == 0) + mq->queue->limits.discard_zeroes_data = 1; + if (!mmc_can_trim(card) && is_power_of_2(card->erase_size)) { + mq->queue->limits.discard_granularity = + card->erase_size << 9; + mq->queue->limits.discard_alignment = + card->erase_size << 9; + } + if (mmc_can_secure_erase_trim(card)) + queue_flag_set_unlocked(QUEUE_FLAG_SECDISCARD, + mq->queue); + } #ifdef CONFIG_MMC_BLOCK_BOUNCE if (host->max_hw_segs == 1) { |