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From: Anton Nefedov <anton.nefedov@virtuozzo.com>
To: qemu-devel@nongnu.org
Cc: qemu-block@nongnu.org, kwolf@redhat.com, mreitz@redhat.com,
	eblake@redhat.com, den@virtuozzo.com, berto@igalia.com,
	Anton Nefedov <anton.nefedov@virtuozzo.com>
Subject: [Qemu-devel] [PATCH v9 7/9] block: support BDRV_REQ_ALLOCATE in passthrough drivers
Date: Tue,  8 May 2018 17:58:14 +0300	[thread overview]
Message-ID: <1525791496-125188-8-git-send-email-anton.nefedov@virtuozzo.com> (raw)
In-Reply-To: <1525791496-125188-1-git-send-email-anton.nefedov@virtuozzo.com>

Support the flag if the underlying BDS supports it

Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
---
 block/blkdebug.c   | 3 ++-
 block/blkverify.c  | 2 +-
 block/mirror.c     | 2 +-
 block/quorum.c     | 3 ++-
 block/raw-format.c | 3 ++-
 5 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/block/blkdebug.c b/block/blkdebug.c
index 053372c..f5f1232 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -400,7 +400,8 @@ static int blkdebug_open(BlockDriverState *bs, QDict *options, int flags,
 
     bs->supported_write_flags = BDRV_REQ_FUA &
         bs->file->bs->supported_write_flags;
-    bs->supported_zero_flags = (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
+    bs->supported_zero_flags =
+        (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) &
         bs->file->bs->supported_zero_flags;
     ret = -EINVAL;
 
diff --git a/block/blkverify.c b/block/blkverify.c
index 496ae09..fa95f22 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -146,7 +146,7 @@ static int blkverify_open(BlockDriverState *bs, QDict *options, int flags,
         s->test_file->bs->supported_write_flags;
 
     bs->supported_zero_flags =
-        (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
+        (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) &
         bs->file->bs->supported_zero_flags &
         s->test_file->bs->supported_zero_flags;
 
diff --git a/block/mirror.c b/block/mirror.c
index a22ddef..6fb3aa6 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1103,7 +1103,7 @@ static void mirror_top_set_supported_flags(BlockDriverState *bs)
     bs->supported_write_flags = BDRV_REQ_FUA &
         bs->backing->bs->supported_write_flags;
     bs->supported_zero_flags =
-        (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
+        (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) &
         bs->backing->bs->supported_zero_flags;
 }
 
diff --git a/block/quorum.c b/block/quorum.c
index 26e7d78..349bdc3 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -873,7 +873,8 @@ static void quorum_set_supported_flags(BlockDriverState *bs)
     int i;
 
     bs->supported_write_flags = BDRV_REQ_FUA;
-    bs->supported_zero_flags  = BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP;
+    bs->supported_zero_flags  =
+        BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE;
 
     for (i = 0; i < s->num_children; i++) {
         bs->supported_write_flags &= s->children[i]->bs->supported_write_flags;
diff --git a/block/raw-format.c b/block/raw-format.c
index a378547..ca65f86 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -417,7 +417,8 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags,
     bs->sg = bs->file->bs->sg;
     bs->supported_write_flags = BDRV_REQ_FUA &
         bs->file->bs->supported_write_flags;
-    bs->supported_zero_flags = (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
+    bs->supported_zero_flags =
+        (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) &
         bs->file->bs->supported_zero_flags;
 
     if (bs->probed && !bdrv_is_read_only(bs)) {
-- 
2.7.4

  parent reply	other threads:[~2018-05-08 14:58 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-08 14:58 [Qemu-devel] [PATCH v9 0/9] qcow2: cluster space preallocation Anton Nefedov
2018-05-08 14:58 ` [Qemu-devel] [PATCH v9 1/9] mirror: inherit supported write/zero flags Anton Nefedov
2018-05-15 14:35   ` Eric Blake
2018-05-15 14:59     ` Anton Nefedov
2018-05-08 14:58 ` [Qemu-devel] [PATCH v9 2/9] blkverify: set " Anton Nefedov
2018-05-15 14:37   ` Eric Blake
2018-05-08 14:58 ` [Qemu-devel] [PATCH v9 3/9] quorum: " Anton Nefedov
2018-05-15 14:38   ` Eric Blake
2018-05-08 14:58 ` [Qemu-devel] [PATCH v9 4/9] block: introduce BDRV_REQ_ALLOCATE flag Anton Nefedov
2018-05-14 10:29   ` Alberto Garcia
2018-05-08 14:58 ` [Qemu-devel] [PATCH v9 5/9] block: treat BDRV_REQ_ALLOCATE as serialising Anton Nefedov
2018-05-08 14:58 ` [Qemu-devel] [PATCH v9 6/9] file-posix: support BDRV_REQ_ALLOCATE Anton Nefedov
2018-05-14 11:50   ` Alberto Garcia
2018-05-08 14:58 ` Anton Nefedov [this message]
2018-05-08 14:58 ` [Qemu-devel] [PATCH v9 8/9] qcow2: skip writing zero buffers to empty COW areas Anton Nefedov
2018-05-14 13:09   ` Alberto Garcia
2018-05-08 14:58 ` [Qemu-devel] [PATCH v9 9/9] iotest 134: test cluster-misaligned encrypted write Anton Nefedov

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