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| author | Vincent Whitchurch <vincent.whitchurch@axis.com> | 2022-04-29 17:21:18 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2022-05-10 12:51:32 +0200 |
| commit | f7b6fc327327698924ef3afa0c3e87a5b7466af3 (patch) | |
| tree | 6aa61b8fbeea6dfaa3a3f1270bb3df23e81e1fd5 /drivers/mmc/core/queue.c | |
| parent | 0c9ee5ba7555016afd1efc9598c3f83de5d83470 (diff) | |
| download | linux-f7b6fc327327698924ef3afa0c3e87a5b7466af3.tar.gz linux-f7b6fc327327698924ef3afa0c3e87a5b7466af3.tar.bz2 linux-f7b6fc327327698924ef3afa0c3e87a5b7466af3.zip | |
mmc: core: Support zeroout using TRIM for eMMC
If an eMMC card supports TRIM and indicates that it erases to zeros, we can
use it to support hardware offloading of REQ_OP_WRITE_ZEROES, so let's add
support for this.
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Reviewed-by: Avri Altman <Avri.Altman@wdc.com>
Link: https://lore.kernel.org/r/20220429152118.3617303-1-vincent.whitchurch@axis.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core/queue.c')
| -rw-r--r-- | drivers/mmc/core/queue.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c index c69b2d9df6f1..bbe2ea829ea7 100644 --- a/drivers/mmc/core/queue.c +++ b/drivers/mmc/core/queue.c @@ -191,6 +191,8 @@ static void mmc_queue_setup_discard(struct request_queue *q, q->limits.discard_granularity = SECTOR_SIZE; if (mmc_can_secure_erase_trim(card)) blk_queue_flag_set(QUEUE_FLAG_SECERASE, q); + if (mmc_can_trim(card) && card->erased_byte == 0) + blk_queue_max_write_zeroes_sectors(q, max_discard); } static unsigned short mmc_get_max_segments(struct mmc_host *host) |