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Thu, 29 Mar 2018 11:09:49 +0000 (UTC) Received: from lemon.usersys.redhat.com (ovpn-12-85.pek2.redhat.com [10.72.12.85]) by smtp.corp.redhat.com (Postfix) with ESMTP id C02ED2024CA4; Thu, 29 Mar 2018 11:09:45 +0000 (UTC) From: Fam Zheng To: qemu-devel@nongnu.org Date: Thu, 29 Mar 2018 19:09:11 +0800 Message-Id: <20180329110914.20888-6-famz@redhat.com> In-Reply-To: <20180329110914.20888-1-famz@redhat.com> References: <20180329110914.20888-1-famz@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Thu, 29 Mar 2018 11:09:49 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Thu, 29 Mar 2018 11:09:49 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'famz@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [RFC PATCH 5/8] file-posix: Implement bdrv_co_map_range X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Fam Zheng , qemu-block@nongnu.org, Max Reitz , Stefan Hajnoczi , pbonzini@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Fam Zheng --- block/file-posix.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/block/file-posix.c b/block/file-posix.c index b13bc89423..4e615d937e 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1656,6 +1656,17 @@ static int coroutine_fn raw_co_pwritev(BlockDriverState *bs, uint64_t offset, return raw_co_prw(bs, offset, bytes, qiov, QEMU_AIO_WRITE); } +static int raw_co_map_range(BlockDriverState *bs, int64_t offset, + int64_t bytes, int64_t *pnum, int64_t *map, + BlockDriverState **file, + int flags) +{ + *file = bs; + *pnum = bytes; + *map = offset; + return BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID; +} + static int raw_co_copy_range(BlockDriverState *bs, int64_t off_in, BlockDriverState *out, int64_t off_out, int bytes) @@ -2389,6 +2400,7 @@ BlockDriver bdrv_file = { .bdrv_co_preadv = raw_co_preadv, .bdrv_co_pwritev = raw_co_pwritev, .bdrv_co_copy_range = raw_co_copy_range, + .bdrv_co_map_range = raw_co_map_range, .bdrv_aio_flush = raw_aio_flush, .bdrv_aio_pdiscard = raw_aio_pdiscard, .bdrv_refresh_limits = raw_refresh_limits, @@ -2867,6 +2879,7 @@ static BlockDriver bdrv_host_device = { .bdrv_co_preadv = raw_co_preadv, .bdrv_co_pwritev = raw_co_pwritev, .bdrv_co_copy_range = raw_co_copy_range, + .bdrv_co_map_range = raw_co_map_range, .bdrv_aio_flush = raw_aio_flush, .bdrv_aio_pdiscard = hdev_aio_pdiscard, .bdrv_refresh_limits = raw_refresh_limits, @@ -2990,6 +3003,7 @@ static BlockDriver bdrv_host_cdrom = { .bdrv_co_preadv = raw_co_preadv, .bdrv_co_pwritev = raw_co_pwritev, .bdrv_co_copy_range = raw_co_copy_range, + .bdrv_co_map_range = raw_co_map_range, .bdrv_aio_flush = raw_aio_flush, .bdrv_refresh_limits = raw_refresh_limits, .bdrv_io_plug = raw_aio_plug, @@ -3121,6 +3135,7 @@ static BlockDriver bdrv_host_cdrom = { .bdrv_co_preadv = raw_co_preadv, .bdrv_co_pwritev = raw_co_pwritev, .bdrv_co_copy_range = raw_co_copy_range, + .bdrv_co_map_range = raw_co_map_range, .bdrv_aio_flush = raw_aio_flush, .bdrv_refresh_limits = raw_refresh_limits, .bdrv_io_plug = raw_aio_plug,