From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58953) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8DPK-00028I-42 for qemu-devel@nongnu.org; Wed, 01 Jun 2016 17:10:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b8DPH-0008DD-T0 for qemu-devel@nongnu.org; Wed, 01 Jun 2016 17:10:28 -0400 From: Eric Blake Date: Wed, 1 Jun 2016 15:10:13 -0600 Message-Id: <1464815413-613-14-git-send-email-eblake@redhat.com> In-Reply-To: <1464815413-613-1-git-send-email-eblake@redhat.com> References: <1464815413-613-1-git-send-email-eblake@redhat.com> Subject: [Qemu-devel] [PATCH v2 13/13] block: Kill bdrv_co_write_zeroes() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, qemu-block@nongnu.org, Stefan Hajnoczi , Fam Zheng , Max Reitz Now that all drivers have been converted to a byte interface, we no longer need a sector interface. Signed-off-by: Eric Blake Reviewed-by: Kevin Wolf --- include/block/block_int.h | 2 -- block/io.c | 15 ++------------- 2 files changed, 2 insertions(+), 15 deletions(-) diff --git a/include/block/block_int.h b/include/block/block_int.h index 1dfdf92..8a4963c 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -163,8 +163,6 @@ struct BlockDriver { * function pointer may be NULL or return -ENOSUP and .bdrv_co_writev() * will be called instead. */ - int coroutine_fn (*bdrv_co_write_zeroes)(BlockDriverState *bs, - int64_t sector_num, int nb_sectors, BdrvRequestFlags flags); int coroutine_fn (*bdrv_co_pwrite_zeroes)(BlockDriverState *bs, int64_t offset, int count, BdrvRequestFlags flags); int coroutine_fn (*bdrv_co_discard)(BlockDriverState *bs, diff --git a/block/io.c b/block/io.c index 5f021d5..6013b97 100644 --- a/block/io.c +++ b/block/io.c @@ -901,7 +901,7 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BlockDriverState *bs, goto err; } - if ((drv->bdrv_co_write_zeroes || drv->bdrv_co_pwrite_zeroes) && + if (drv->bdrv_co_pwrite_zeroes && buffer_is_zero(bounce_buffer, iov.iov_len)) { ret = bdrv_co_do_pwrite_zeroes(bs, cluster_sector_num * BDRV_SECTOR_SIZE, @@ -1170,16 +1170,6 @@ static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs, !(bs->supported_zero_flags & BDRV_REQ_FUA)) { need_flush = true; } - } else if (drv->bdrv_co_write_zeroes) { - assert(offset % BDRV_SECTOR_SIZE == 0); - assert(count % BDRV_SECTOR_SIZE == 0); - ret = drv->bdrv_co_write_zeroes(bs, offset >> BDRV_SECTOR_BITS, - num >> BDRV_SECTOR_BITS, - flags & bs->supported_zero_flags); - if (ret != -ENOTSUP && (flags & BDRV_REQ_FUA) && - !(bs->supported_zero_flags & BDRV_REQ_FUA)) { - need_flush = true; - } } else { assert(!bs->supported_zero_flags); } @@ -1259,8 +1249,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BlockDriverState *bs, ret = notifier_with_return_list_notify(&bs->before_write_notifiers, req); if (!ret && bs->detect_zeroes != BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF && - !(flags & BDRV_REQ_ZERO_WRITE) && - (drv->bdrv_co_pwrite_zeroes || drv->bdrv_co_write_zeroes) && + !(flags & BDRV_REQ_ZERO_WRITE) && drv->bdrv_co_pwrite_zeroes && qemu_iovec_is_zero(qiov)) { flags |= BDRV_REQ_ZERO_WRITE; if (bs->detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP) { -- 2.5.5