From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57009) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WM3gn-0007WP-LV for qemu-devel@nongnu.org; Fri, 07 Mar 2014 17:56:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WM3gh-0001Zj-Dr for qemu-devel@nongnu.org; Fri, 07 Mar 2014 17:56:25 -0500 Received: from mx1.redhat.com ([209.132.183.28]:31154) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WM3gh-0001Zc-4j for qemu-devel@nongnu.org; Fri, 07 Mar 2014 17:56:19 -0500 From: Max Reitz Date: Fri, 7 Mar 2014 23:55:50 +0100 Message-Id: <1394232956-27852-7-git-send-email-mreitz@redhat.com> In-Reply-To: <1394232956-27852-1-git-send-email-mreitz@redhat.com> References: <1394232956-27852-1-git-send-email-mreitz@redhat.com> Subject: [Qemu-devel] [PATCH v2 06/12] 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 , =?UTF-8?q?Beno=C3=AEt=20Canet?= , 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 f40343e..e4cdb68 100644 --- a/block/json.c +++ b/block/json.c @@ -95,6 +95,21 @@ 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->file, 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->file, sector_num, nb_sectors, flags); +} + static void json_invalidate_cache(BlockDriverState *bs) { return bdrv_invalidate_cache(bs->file); @@ -105,6 +120,16 @@ 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; @@ -128,12 +153,17 @@ 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