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[Qemu-block] [PATCH v10 7/9] block: support BDRV_REQ_ALLOCATE in passthr
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From: |
Anton Nefedov |
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Subject: |
[Qemu-block] [PATCH v10 7/9] block: support BDRV_REQ_ALLOCATE in passthrough drivers |
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Date: |
Mon, 3 Dec 2018 10:14:59 +0000 |
Support the flag if the underlying BDS supports it
Signed-off-by: Anton Nefedov <address@hidden>
---
block/blkdebug.c | 2 +-
block/blkverify.c | 2 +-
block/copy-on-read.c | 4 ++--
block/mirror.c | 2 +-
block/raw-format.c | 2 +-
5 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/block/blkdebug.c b/block/blkdebug.c
index 0759452925..f0fc2ec276 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -401,7 +401,7 @@ static int blkdebug_open(BlockDriverState *bs, QDict
*options, int flags,
bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
(BDRV_REQ_FUA & bs->file->bs->supported_write_flags);
bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
- ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
+ ((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 bb52596cbb..9cb4f94b68 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -146,7 +146,7 @@ static int blkverify_open(BlockDriverState *bs, QDict
*options, int flags,
bs->file->bs->supported_write_flags &
s->test_file->bs->supported_write_flags);
bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
- ((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/copy-on-read.c b/block/copy-on-read.c
index 64dcc424b5..1eb993699a 100644
--- a/block/copy-on-read.c
+++ b/block/copy-on-read.c
@@ -38,8 +38,8 @@ static int cor_open(BlockDriverState *bs, QDict *options, int
flags,
bs->file->bs->supported_write_flags);
bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
- ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
- bs->file->bs->supported_zero_flags);
+ ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) &
+ bs->file->bs->supported_zero_flags);
return 0;
}
diff --git a/block/mirror.c b/block/mirror.c
index 56908c9b19..9d836a6bd3 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1531,7 +1531,7 @@ static void mirror_start_job(const char *job_id,
BlockDriverState *bs,
mirror_top_bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
(BDRV_REQ_FUA & bs->supported_write_flags);
mirror_top_bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
- ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP)
+ ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE)
& bs->supported_zero_flags);
bs_opaque = g_new0(MirrorBDSOpaque, 1);
diff --git a/block/raw-format.c b/block/raw-format.c
index 6f6dc99b2c..ad7453dc83 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -432,7 +432,7 @@ static int raw_open(BlockDriverState *bs, QDict *options,
int flags,
bs->supported_write_flags = BDRV_REQ_WRITE_UNCHANGED |
(BDRV_REQ_FUA & bs->file->bs->supported_write_flags);
bs->supported_zero_flags = BDRV_REQ_WRITE_UNCHANGED |
- ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
+ ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_ALLOCATE) &
bs->file->bs->supported_zero_flags);
if (bs->probed && !bdrv_is_read_only(bs)) {
--
2.17.1
- [Qemu-block] [PATCH v10 8/9] qcow2: skip writing zero buffers to empty COW areas, (continued)
- [Qemu-block] [PATCH v10 7/9] block: support BDRV_REQ_ALLOCATE in passthrough drivers,
Anton Nefedov <=