From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44625) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WKUnz-0000KC-A9 for qemu-devel@nongnu.org; Mon, 03 Mar 2014 10:29:29 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WKUns-0005jD-Ej for qemu-devel@nongnu.org; Mon, 03 Mar 2014 10:29:23 -0500 Received: from mx1.redhat.com ([209.132.183.28]:13329) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WKUnr-0005ip-UG for qemu-devel@nongnu.org; Mon, 03 Mar 2014 10:29:16 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s23FTEvS013212 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 3 Mar 2014 10:29:14 -0500 From: Max Reitz Date: Mon, 3 Mar 2014 16:28:47 +0100 Message-Id: <1393860533-2063-5-git-send-email-mreitz@redhat.com> In-Reply-To: <1393860533-2063-1-git-send-email-mreitz@redhat.com> References: <1393860533-2063-1-git-send-email-mreitz@redhat.com> Subject: [Qemu-devel] [PATCH 04/10] block/json: Add functions for writing zeroes etc. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Stefan Hajnoczi , Max Reitz Add passthrough functions for bdrv_aio_discard(), bdrv_co_write_zeroes(), bdrv_truncate() and bdrv_has_zero_init(). Signed-off-by: Max Reitz --- block/json.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/block/json.c b/block/json.c index 2f885cc..a2f4691 100644 --- a/block/json.c +++ b/block/json.c @@ -98,6 +98,21 @@ static BlockDriverAIOCB *json_aio_flush(BlockDriverState *bs, return bdrv_aio_flush(bs->file, cb, opaque); } +static BlockDriverAIOCB *json_aio_discard(BlockDriverState *bs, + int64_t sector_num, int nb_sectors, + BlockDriverCompletionFunc *cb, + void *opaque) +{ + return bdrv_aio_discard(bs, sector_num, nb_sectors, cb, opaque); +} + +static coroutine_fn int json_co_write_zeroes(BlockDriverState *bs, + int64_t sector_num, int nb_sectors, + BdrvRequestFlags flags) +{ + return bdrv_co_write_zeroes(bs, sector_num, nb_sectors, flags); +} + static void json_invalidate_cache(BlockDriverState *bs) { return bdrv_invalidate_cache(bs->file); @@ -108,6 +123,16 @@ static int64_t json_getlength(BlockDriverState *bs) return bdrv_getlength(bs->file); } +static int json_truncate(BlockDriverState *bs, int64_t offset) +{ + return bdrv_truncate(bs->file, offset); +} + +static int json_has_zero_init(BlockDriverState *bs) +{ + return bdrv_has_zero_init(bs->file); +} + static int json_refresh_limits(BlockDriverState *bs) { bs->bl = bs->file->bl; @@ -131,12 +156,17 @@ static BlockDriver bdrv_json = { .bdrv_aio_readv = json_aio_readv, .bdrv_aio_writev = json_aio_writev, .bdrv_aio_flush = json_aio_flush, + .bdrv_aio_discard = json_aio_discard, + + .bdrv_co_write_zeroes = json_co_write_zeroes, .bdrv_invalidate_cache = json_invalidate_cache, .has_variable_length = true, .bdrv_getlength = json_getlength, + .bdrv_truncate = json_truncate, + .bdrv_has_zero_init = json_has_zero_init, .bdrv_refresh_limits = json_refresh_limits, .bdrv_get_info = json_get_info, -- 1.9.0