From patchwork Fri Sep 13 10:24:59 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Lieven X-Patchwork-Id: 274710 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id F2A7D2C00C7 for ; Fri, 13 Sep 2013 20:27:07 +1000 (EST) Received: from localhost ([::1]:45857 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VKQag-0005kP-0P for incoming@patchwork.ozlabs.org; Fri, 13 Sep 2013 06:27:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53801) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VKQa9-0005bb-1b for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:26:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VKQa2-0003Iq-Tw for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:26:32 -0400 Received: from mx.ipv6.kamp.de ([2a02:248:0:51::16]:56260 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VKQa2-0003IY-EB for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:26:26 -0400 Received: (qmail 2975 invoked by uid 89); 13 Sep 2013 10:26:25 -0000 Received: from [82.141.1.145] by client-16-kamp (envelope-from , uid 89) with qmail-scanner-2010/03/19-MF (clamdscan: 0.97.8/17847. hbedv: 8.2.12.118/7.11.102.86. spamassassin: 3.3.1. 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X-Received-From: 2a02:248:0:51::16 Cc: kwolf@redhat.com, ronniesahlberg@gmail.com, Peter Lieven , stefanha@redhat.com, anthony@codemonkey.ws, pbonzini@redhat.com Subject: [Qemu-devel] [PATCH 02/12] block: add flags to bdrv_*_write_zeroes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Peter Lieven Reviewed-by: Eric Blake --- block-migration.c | 2 +- block.c | 20 +++++++++++--------- block/backup.c | 3 ++- block/qcow2.c | 2 +- block/qed.c | 3 ++- block/raw_bsd.c | 5 +++-- block/vmdk.c | 3 ++- include/block/block.h | 4 ++-- include/block/block_int.h | 2 +- qemu-io-cmds.c | 2 +- 10 files changed, 26 insertions(+), 20 deletions(-) diff --git a/block-migration.c b/block-migration.c index daf9ec1..713a8e3 100644 --- a/block-migration.c +++ b/block-migration.c @@ -780,7 +780,7 @@ static int block_load(QEMUFile *f, void *opaque, int version_id) } if (flags & BLK_MIG_FLAG_ZERO_BLOCK) { - ret = bdrv_write_zeroes(bs, addr, nr_sectors); + ret = bdrv_write_zeroes(bs, addr, nr_sectors, 0); } else { buf = g_malloc(BLOCK_SIZE); qemu_get_buffer(f, buf, BLOCK_SIZE); diff --git a/block.c b/block.c index 878f365..e5918a7 100644 --- a/block.c +++ b/block.c @@ -79,7 +79,7 @@ static BlockDriverAIOCB *bdrv_co_aio_rw_vector(BlockDriverState *bs, bool is_write); static void coroutine_fn bdrv_co_do_rw(void *opaque); static int coroutine_fn bdrv_co_do_write_zeroes(BlockDriverState *bs, - int64_t sector_num, int nb_sectors); + int64_t sector_num, int nb_sectors, BdrvRequestFlags flags); static QTAILQ_HEAD(, BlockDriverState) bdrv_states = QTAILQ_HEAD_INITIALIZER(bdrv_states); @@ -2335,10 +2335,11 @@ int bdrv_writev(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov) return bdrv_rwv_co(bs, sector_num, qiov, true, 0); } -int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, int nb_sectors) +int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, + int nb_sectors, BdrvRequestFlags flags) { return bdrv_rw_co(bs, sector_num, NULL, nb_sectors, true, - BDRV_REQ_ZERO_WRITE); + BDRV_REQ_ZERO_WRITE | flags); } int bdrv_pread(BlockDriverState *bs, int64_t offset, @@ -2520,7 +2521,7 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BlockDriverState *bs, if (drv->bdrv_co_write_zeroes && buffer_is_zero(bounce_buffer, iov.iov_len)) { ret = bdrv_co_do_write_zeroes(bs, cluster_sector_num, - cluster_nb_sectors); + cluster_nb_sectors, 0); } else { /* This does not change the data on the disk, it is not necessary * to flush even in cache=writethrough mode. @@ -2654,7 +2655,7 @@ int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs, } static int coroutine_fn bdrv_co_do_write_zeroes(BlockDriverState *bs, - int64_t sector_num, int nb_sectors) + int64_t sector_num, int nb_sectors, BdrvRequestFlags flags) { BlockDriver *drv = bs->drv; QEMUIOVector qiov; @@ -2666,7 +2667,7 @@ static int coroutine_fn bdrv_co_do_write_zeroes(BlockDriverState *bs, /* First try the efficient write zeroes operation */ if (drv->bdrv_co_write_zeroes) { - ret = drv->bdrv_co_write_zeroes(bs, sector_num, nb_sectors); + ret = drv->bdrv_co_write_zeroes(bs, sector_num, nb_sectors, flags); if (ret != -ENOTSUP) { return ret; } @@ -2721,7 +2722,7 @@ static int coroutine_fn bdrv_co_do_writev(BlockDriverState *bs, if (ret < 0) { /* Do nothing, write notifier decided to fail this request */ } else if (flags & BDRV_REQ_ZERO_WRITE) { - ret = bdrv_co_do_write_zeroes(bs, sector_num, nb_sectors); + ret = bdrv_co_do_write_zeroes(bs, sector_num, nb_sectors, flags); } else { ret = drv->bdrv_co_writev(bs, sector_num, nb_sectors, qiov); } @@ -2755,12 +2756,13 @@ int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num, } int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, - int64_t sector_num, int nb_sectors) + int64_t sector_num, int nb_sectors, + BdrvRequestFlags flags) { trace_bdrv_co_write_zeroes(bs, sector_num, nb_sectors); return bdrv_co_do_writev(bs, sector_num, nb_sectors, NULL, - BDRV_REQ_ZERO_WRITE); + BDRV_REQ_ZERO_WRITE | flags); } /** diff --git a/block/backup.c b/block/backup.c index 04c4b5c..5f6a642 100644 --- a/block/backup.c +++ b/block/backup.c @@ -138,7 +138,8 @@ static int coroutine_fn backup_do_cow(BlockDriverState *bs, if (buffer_is_zero(iov.iov_base, iov.iov_len)) { ret = bdrv_co_write_zeroes(job->target, - start * BACKUP_SECTORS_PER_CLUSTER, n); + start * BACKUP_SECTORS_PER_CLUSTER, + n, 0); } else { ret = bdrv_co_writev(job->target, start * BACKUP_SECTORS_PER_CLUSTER, n, diff --git a/block/qcow2.c b/block/qcow2.c index 578792f..2cb59a2 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1555,7 +1555,7 @@ static int qcow2_make_empty(BlockDriverState *bs) } static coroutine_fn int qcow2_co_write_zeroes(BlockDriverState *bs, - int64_t sector_num, int nb_sectors) + int64_t sector_num, int nb_sectors, BdrvRequestFlags flags) { int ret; BDRVQcowState *s = bs->opaque; diff --git a/block/qed.c b/block/qed.c index 49b3a37..d6e42f3 100644 --- a/block/qed.c +++ b/block/qed.c @@ -1389,7 +1389,8 @@ static void coroutine_fn qed_co_write_zeroes_cb(void *opaque, int ret) static int coroutine_fn bdrv_qed_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, - int nb_sectors) + int nb_sectors, + BdrvRequestFlags flags) { BlockDriverAIOCB *blockacb; BDRVQEDState *s = bs->opaque; diff --git a/block/raw_bsd.c b/block/raw_bsd.c index a9060ca..bd4811b 100644 --- a/block/raw_bsd.c +++ b/block/raw_bsd.c @@ -66,9 +66,10 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs, } static int coroutine_fn raw_co_write_zeroes(BlockDriverState *bs, - int64_t sector_num, int nb_sectors) + int64_t sector_num, int nb_sectors, + BdrvRequestFlags flags) { - return bdrv_co_write_zeroes(bs->file, sector_num, nb_sectors); + return bdrv_co_write_zeroes(bs->file, sector_num, nb_sectors, flags); } static int coroutine_fn raw_co_discard(BlockDriverState *bs, diff --git a/block/vmdk.c b/block/vmdk.c index fb5b529..914a9b7 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1386,7 +1386,8 @@ static coroutine_fn int vmdk_co_write(BlockDriverState *bs, int64_t sector_num, static int coroutine_fn vmdk_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, - int nb_sectors) + int nb_sectors, + BdrvRequestFlags flags) { int ret; BDRVVmdkState *s = bs->opaque; diff --git a/include/block/block.h b/include/block/block.h index 3249261..ddb6870 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -187,7 +187,7 @@ int bdrv_read_unthrottled(BlockDriverState *bs, int64_t sector_num, int bdrv_write(BlockDriverState *bs, int64_t sector_num, const uint8_t *buf, int nb_sectors); int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, - int nb_sectors); + int nb_sectors, BdrvRequestFlags flags); int bdrv_writev(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov); int bdrv_pread(BlockDriverState *bs, int64_t offset, void *buf, int count); @@ -209,7 +209,7 @@ int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num, * because it may allocate memory for the entire region. */ int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, - int nb_sectors); + int nb_sectors, BdrvRequestFlags flags); BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs, const char *backing_file); int bdrv_get_backing_file_depth(BlockDriverState *bs); diff --git a/include/block/block_int.h b/include/block/block_int.h index 7c35198..26bad36 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -115,7 +115,7 @@ struct BlockDriver { * instead. */ int coroutine_fn (*bdrv_co_write_zeroes)(BlockDriverState *bs, - int64_t sector_num, int nb_sectors); + int64_t sector_num, int nb_sectors, BdrvRequestFlags flags); int coroutine_fn (*bdrv_co_discard)(BlockDriverState *bs, int64_t sector_num, int nb_sectors); int64_t coroutine_fn (*bdrv_co_get_block_status)(BlockDriverState *bs, diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index 8565d49..66c0b9e 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -441,7 +441,7 @@ static void coroutine_fn co_write_zeroes_entry(void *opaque) CoWriteZeroes *data = opaque; data->ret = bdrv_co_write_zeroes(data->bs, data->offset / BDRV_SECTOR_SIZE, - data->count / BDRV_SECTOR_SIZE); + data->count / BDRV_SECTOR_SIZE, 0); data->done = true; if (data->ret < 0) { *data->total = data->ret;