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[Qemu-devel] [PATCH v8 7/9] block: support BDRV_REQ_ALLOCATE in passthro
From: |
Anton Nefedov |
Subject: |
[Qemu-devel] [PATCH v8 7/9] block: support BDRV_REQ_ALLOCATE in passthrough drivers |
Date: |
Mon, 12 Mar 2018 13:16:56 +0300 |
Support the flag if the underlying BDS supports it
Signed-off-by: Anton Nefedov <address@hidden>
Reviewed-by: Alberto Garcia <address@hidden>
---
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 5897124..d46f6c9 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 de2fdc1..03bec62 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 2fb786f..58f006f 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1105,7 +1105,7 @@ 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 dc77a23..e369e79 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
- Re: [Qemu-devel] [PATCH v8 1/9] mirror: inherit supported write/zero flags, (continued)
- [Qemu-devel] [PATCH v8 3/9] quorum: set supported write/zero flags, Anton Nefedov, 2018/03/12
- [Qemu-devel] [PATCH v8 4/9] block: introduce BDRV_REQ_ALLOCATE flag, Anton Nefedov, 2018/03/12
- [Qemu-devel] [PATCH v8 6/9] file-posix: support BDRV_REQ_ALLOCATE, Anton Nefedov, 2018/03/12
- [Qemu-devel] [PATCH v8 5/9] block: treat BDRV_REQ_ALLOCATE as serialising, Anton Nefedov, 2018/03/12
- [Qemu-devel] [PATCH v8 7/9] block: support BDRV_REQ_ALLOCATE in passthrough drivers,
Anton Nefedov <=
- [Qemu-devel] [PATCH v8 9/9] iotest 134: test cluster-misaligned encrypted write, Anton Nefedov, 2018/03/12
- [Qemu-devel] [PATCH v8 8/9] qcow2: skip writing zero buffers to empty COW areas, Anton Nefedov, 2018/03/12