From dde475376317ba86e9531b7ebd9e04306e8f9bd4 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Fri, 15 Jul 2016 17:23:05 -0600 Subject: [PATCH] sheepdog: Switch .bdrv_co_discard() to byte-based Another step towards killing off sector-based block APIs. Signed-off-by: Eric Blake Reviewed-by: Stefan Hajnoczi Message-id: 1468624988-423-17-git-send-email-eblake@redhat.com Signed-off-by: Stefan Hajnoczi --- block/sheepdog.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/block/sheepdog.c b/block/sheepdog.c index e739c56f08..66e1cb2b2d 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -2800,8 +2800,8 @@ static int sd_load_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, } -static coroutine_fn int sd_co_discard(BlockDriverState *bs, int64_t sector_num, - int nb_sectors) +static coroutine_fn int sd_co_pdiscard(BlockDriverState *bs, int64_t offset, + int count) { SheepdogAIOCB *acb; BDRVSheepdogState *s = bs->opaque; @@ -2811,7 +2811,7 @@ static coroutine_fn int sd_co_discard(BlockDriverState *bs, int64_t sector_num, uint32_t zero = 0; if (!s->discard_supported) { - return 0; + return 0; } memset(&discard_iov, 0, sizeof(discard_iov)); @@ -2820,7 +2820,10 @@ static coroutine_fn int sd_co_discard(BlockDriverState *bs, int64_t sector_num, iov.iov_len = sizeof(zero); discard_iov.iov = &iov; discard_iov.niov = 1; - acb = sd_aio_setup(bs, &discard_iov, sector_num, nb_sectors); + assert((offset & (BDRV_SECTOR_SIZE - 1)) == 0); + assert((count & (BDRV_SECTOR_SIZE - 1)) == 0); + acb = sd_aio_setup(bs, &discard_iov, offset >> BDRV_SECTOR_BITS, + count >> BDRV_SECTOR_BITS); acb->aiocb_type = AIOCB_DISCARD_OBJ; acb->aio_done_func = sd_finish_aiocb; @@ -2954,7 +2957,7 @@ static BlockDriver bdrv_sheepdog = { .bdrv_co_readv = sd_co_readv, .bdrv_co_writev = sd_co_writev, .bdrv_co_flush_to_disk = sd_co_flush_to_disk, - .bdrv_co_discard = sd_co_discard, + .bdrv_co_pdiscard = sd_co_pdiscard, .bdrv_co_get_block_status = sd_co_get_block_status, .bdrv_snapshot_create = sd_snapshot_create, @@ -2990,7 +2993,7 @@ static BlockDriver bdrv_sheepdog_tcp = { .bdrv_co_readv = sd_co_readv, .bdrv_co_writev = sd_co_writev, .bdrv_co_flush_to_disk = sd_co_flush_to_disk, - .bdrv_co_discard = sd_co_discard, + .bdrv_co_pdiscard = sd_co_pdiscard, .bdrv_co_get_block_status = sd_co_get_block_status, .bdrv_snapshot_create = sd_snapshot_create, @@ -3026,7 +3029,7 @@ static BlockDriver bdrv_sheepdog_unix = { .bdrv_co_readv = sd_co_readv, .bdrv_co_writev = sd_co_writev, .bdrv_co_flush_to_disk = sd_co_flush_to_disk, - .bdrv_co_discard = sd_co_discard, + .bdrv_co_pdiscard = sd_co_pdiscard, .bdrv_co_get_block_status = sd_co_get_block_status, .bdrv_snapshot_create = sd_snapshot_create, -- 2.11.0