From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46487) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dsVKK-0005ps-B7 for qemu-devel@nongnu.org; Thu, 14 Sep 2017 10:41:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dsVKJ-0002by-Cp for qemu-devel@nongnu.org; Thu, 14 Sep 2017 10:41:12 -0400 From: Eric Blake Date: Thu, 14 Sep 2017 09:40:21 -0500 Message-Id: <20170914144032.14945-10-eblake@redhat.com> In-Reply-To: <20170914144032.14945-1-eblake@redhat.com> References: <20170914144032.14945-1-eblake@redhat.com> Subject: [Qemu-devel] [PATCH v3 09/20] parallels: Switch to .bdrv_co_block_status() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, jsnow@redhat.com, famz@redhat.com, qemu-block@nongnu.org, Stefan Hajnoczi , "Denis V. Lunev" , Max Reitz We are gradually moving away from sector-based interfaces, towards byte-based. Update the parallels driver accordingly. Note that the internal function block_status() is still sector-based, because it is still in use by other sector-based functions; but that's okay because request_alignment is 512 as a result of those functions. For now, no optimizations are added based on the mapping hint. Signed-off-by: Eric Blake Reviewed-by: Denis V. Lunev --- v2: rebase to mapping parameter; it is ignored, so R-b kept --- block/parallels.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/block/parallels.c b/block/parallels.c index 2b6c6e5709..37dddfd2e9 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -278,22 +278,29 @@ static coroutine_fn int parallels_co_flush_to_os(BlockDriverState *bs) } -static int64_t coroutine_fn parallels_co_get_block_status(BlockDriverState *bs, - int64_t sector_num, int nb_sectors, int *pnum, BlockDriverState **file) +static int64_t coroutine_fn parallels_co_block_status(BlockDriverState *bs, + bool mapping, + int64_t offset, + int64_t bytes, + int64_t *pnum, + BlockDriverState **file) { BDRVParallelsState *s = bs->opaque; - int64_t offset; + int count; + assert(QEMU_IS_ALIGNED(offset | bytes, BDRV_SECTOR_SIZE)); qemu_co_mutex_lock(&s->lock); - offset = block_status(s, sector_num, nb_sectors, pnum); + offset = block_status(s, offset >> BDRV_SECTOR_BITS, + bytes >> BDRV_SECTOR_BITS, &count); qemu_co_mutex_unlock(&s->lock); if (offset < 0) { return 0; } + *pnum = count * BDRV_SECTOR_SIZE; *file = bs->file->bs; - return (offset << BDRV_SECTOR_BITS) | + return (offset & BDRV_BLOCK_OFFSET_MASK) | BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID; } @@ -781,7 +788,7 @@ static BlockDriver bdrv_parallels = { .bdrv_open = parallels_open, .bdrv_close = parallels_close, .bdrv_child_perm = bdrv_format_default_perms, - .bdrv_co_get_block_status = parallels_co_get_block_status, + .bdrv_co_block_status = parallels_co_block_status, .bdrv_has_zero_init = bdrv_has_zero_init_1, .bdrv_co_flush_to_os = parallels_co_flush_to_os, .bdrv_co_readv = parallels_co_readv, -- 2.13.5