From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38431) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YYZe6-0004KO-9F for qemu-devel@nongnu.org; Thu, 19 Mar 2015 08:33:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YYZe5-0002Sv-I1 for qemu-devel@nongnu.org; Thu, 19 Mar 2015 08:33:54 -0400 From: Kevin Wolf Date: Thu, 19 Mar 2015 13:33:31 +0100 Message-Id: <1426768413-31079-2-git-send-email-kwolf@redhat.com> In-Reply-To: <1426768413-31079-1-git-send-email-kwolf@redhat.com> References: <1426768413-31079-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PATCH v2 1/3] block-backend: Expose bdrv_write_zeroes() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, pl@kamp.de, qemu-devel@nongnu.org, stefanha@redhat.com, mreitz@redhat.com Signed-off-by: Kevin Wolf --- block/block-backend.c | 11 +++++++++++ include/sysemu/block-backend.h | 2 ++ 2 files changed, 13 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index 48b6e4c..93e46f3 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -515,6 +515,17 @@ int blk_write(BlockBackend *blk, int64_t sector_num, const uint8_t *buf, return bdrv_write(blk->bs, sector_num, buf, nb_sectors); } +int blk_write_zeroes(BlockBackend *blk, int64_t sector_num, + int nb_sectors, BdrvRequestFlags flags) +{ + int ret = blk_check_request(blk, sector_num, nb_sectors); + if (ret < 0) { + return ret; + } + + return bdrv_write_zeroes(blk->bs, sector_num, nb_sectors, flags); +} + static void error_callback_bh(void *opaque) { struct BlockBackendAIOCB *acb = opaque; diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 77e9b9c..b4a4d5e 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -87,6 +87,8 @@ int blk_read_unthrottled(BlockBackend *blk, int64_t sector_num, uint8_t *buf, int nb_sectors); int blk_write(BlockBackend *blk, int64_t sector_num, const uint8_t *buf, int nb_sectors); +int blk_write_zeroes(BlockBackend *blk, int64_t sector_num, + int nb_sectors, BdrvRequestFlags flags); BlockAIOCB *blk_aio_write_zeroes(BlockBackend *blk, int64_t sector_num, int nb_sectors, BdrvRequestFlags flags, BlockCompletionFunc *cb, void *opaque); -- 1.8.3.1