From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:47870) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R5yCU-0005BM-R3 for qemu-devel@nongnu.org; Tue, 20 Sep 2011 07:09:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R5yCT-00007c-LM for qemu-devel@nongnu.org; Tue, 20 Sep 2011 07:09:18 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50677) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R5yCT-00007J-BP for qemu-devel@nongnu.org; Tue, 20 Sep 2011 07:09:17 -0400 From: Kevin Wolf Date: Tue, 20 Sep 2011 13:11:48 +0200 Message-Id: <1316517112-9908-17-git-send-email-kwolf@redhat.com> In-Reply-To: <1316517112-9908-1-git-send-email-kwolf@redhat.com> References: <1316517112-9908-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PATCH 16/20] rbd: call flush, if available List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: anthony@codemonkey.ws Cc: kwolf@redhat.com, qemu-devel@nongnu.org From: Sage Weil librbd recently added async writeback and flush support. If the new rbd_flush() call is available, call it. Signed-off-by: Sage Weil Signed-off-by: Kevin Wolf --- block/rbd.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/block/rbd.c b/block/rbd.c index 23d8751..98efd2c 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -680,6 +680,17 @@ static BlockDriverAIOCB *qemu_rbd_aio_writev(BlockDriverState *bs, return rbd_aio_rw_vector(bs, sector_num, qiov, nb_sectors, cb, opaque, 1); } +static int qemu_rbd_flush(BlockDriverState *bs) +{ +#if LIBRBD_VERSION_CODE >= LIBRBD_VERSION(0, 1, 1) + /* rbd_flush added in 0.1.1 */ + BDRVRBDState *s = bs->opaque; + return rbd_flush(s->image); +#else + return 0; +#endif +} + static int qemu_rbd_getinfo(BlockDriverState *bs, BlockDriverInfo *bdi) { BDRVRBDState *s = bs->opaque; @@ -815,6 +826,7 @@ static BlockDriver bdrv_rbd = { .bdrv_file_open = qemu_rbd_open, .bdrv_close = qemu_rbd_close, .bdrv_create = qemu_rbd_create, + .bdrv_flush = qemu_rbd_flush, .bdrv_get_info = qemu_rbd_getinfo, .create_options = qemu_rbd_create_options, .bdrv_getlength = qemu_rbd_getlength, -- 1.7.6.2