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qemu-kvm/SOURCES/kvm-block-Add-flags-to-bdrv...

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From 50127f0ff9e13a15fd5bfeb2662e2404ff20f364 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Mon, 8 Jun 2020 15:01:31 +0100
Subject: [PATCH 03/17] block: Add flags to bdrv(_co)_truncate()
RH-Author: Kevin Wolf <kwolf@redhat.com>
Message-id: <20200608150140.38218-3-kwolf@redhat.com>
Patchwork-id: 97445
O-Subject: [RHEL-AV-8.2.1 qemu-kvm PATCH 02/11] block: Add flags to bdrv(_co)_truncate()
Bugzilla: 1780574
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
Now that block drivers can support flags for .bdrv_co_truncate, expose
the parameter in the node level interfaces bdrv_co_truncate() and
bdrv_truncate().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200424125448.63318-3-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 7b8e4857426f2e2de2441749996c6161b550bada)
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
block/block-backend.c | 2 +-
block/crypto.c | 2 +-
block/io.c | 12 +++++++-----
block/parallels.c | 6 +++---
block/qcow.c | 4 ++--
block/qcow2-refcount.c | 2 +-
block/qcow2.c | 15 +++++++++------
block/raw-format.c | 2 +-
block/vhdx-log.c | 2 +-
block/vhdx.c | 2 +-
block/vmdk.c | 2 +-
include/block/block.h | 5 +++--
tests/test-block-iothread.c | 6 +++---
13 files changed, 34 insertions(+), 28 deletions(-)
diff --git a/block/block-backend.c b/block/block-backend.c
index 38ae413..8be2006 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -2144,7 +2144,7 @@ int blk_truncate(BlockBackend *blk, int64_t offset, bool exact,
return -ENOMEDIUM;
}
- return bdrv_truncate(blk->root, offset, exact, prealloc, errp);
+ return bdrv_truncate(blk->root, offset, exact, prealloc, 0, errp);
}
int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf,
diff --git a/block/crypto.c b/block/crypto.c
index 6e4b726..fcb4a97 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -313,7 +313,7 @@ block_crypto_co_truncate(BlockDriverState *bs, int64_t offset, bool exact,
offset += payload_offset;
- return bdrv_co_truncate(bs->file, offset, exact, prealloc, errp);
+ return bdrv_co_truncate(bs->file, offset, exact, prealloc, 0, errp);
}
static void block_crypto_close(BlockDriverState *bs)
diff --git a/block/io.c b/block/io.c
index 549e5a4..3235ce5 100644
--- a/block/io.c
+++ b/block/io.c
@@ -3315,12 +3315,12 @@ static void bdrv_parent_cb_resize(BlockDriverState *bs)
* 'offset' bytes in length.
*/
int coroutine_fn bdrv_co_truncate(BdrvChild *child, int64_t offset, bool exact,
- PreallocMode prealloc, Error **errp)
+ PreallocMode prealloc, BdrvRequestFlags flags,
+ Error **errp)
{
BlockDriverState *bs = child->bs;
BlockDriver *drv = bs->drv;
BdrvTrackedRequest req;
- BdrvRequestFlags flags = 0;
int64_t old_size, new_bytes;
int ret;
@@ -3378,7 +3378,7 @@ int coroutine_fn bdrv_co_truncate(BdrvChild *child, int64_t offset, bool exact,
}
ret = drv->bdrv_co_truncate(bs, offset, exact, prealloc, flags, errp);
} else if (bs->file && drv->is_filter) {
- ret = bdrv_co_truncate(bs->file, offset, exact, prealloc, errp);
+ ret = bdrv_co_truncate(bs->file, offset, exact, prealloc, flags, errp);
} else {
error_setg(errp, "Image format driver does not support resize");
ret = -ENOTSUP;
@@ -3411,6 +3411,7 @@ typedef struct TruncateCo {
int64_t offset;
bool exact;
PreallocMode prealloc;
+ BdrvRequestFlags flags;
Error **errp;
int ret;
} TruncateCo;
@@ -3419,12 +3420,12 @@ static void coroutine_fn bdrv_truncate_co_entry(void *opaque)
{
TruncateCo *tco = opaque;
tco->ret = bdrv_co_truncate(tco->child, tco->offset, tco->exact,
- tco->prealloc, tco->errp);
+ tco->prealloc, tco->flags, tco->errp);
aio_wait_kick();
}
int bdrv_truncate(BdrvChild *child, int64_t offset, bool exact,
- PreallocMode prealloc, Error **errp)
+ PreallocMode prealloc, BdrvRequestFlags flags, Error **errp)
{
Coroutine *co;
TruncateCo tco = {
@@ -3432,6 +3433,7 @@ int bdrv_truncate(BdrvChild *child, int64_t offset, bool exact,
.offset = offset,
.exact = exact,
.prealloc = prealloc,
+ .flags = flags,
.errp = errp,
.ret = NOT_DONE,
};
diff --git a/block/parallels.c b/block/parallels.c
index 6d4ed77..2be92cf 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -203,7 +203,7 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
} else {
ret = bdrv_truncate(bs->file,
(s->data_end + space) << BDRV_SECTOR_BITS,
- false, PREALLOC_MODE_OFF, NULL);
+ false, PREALLOC_MODE_OFF, 0, NULL);
}
if (ret < 0) {
return ret;
@@ -493,7 +493,7 @@ static int coroutine_fn parallels_co_check(BlockDriverState *bs,
* That means we have to pass exact=true.
*/
ret = bdrv_truncate(bs->file, res->image_end_offset, true,
- PREALLOC_MODE_OFF, &local_err);
+ PREALLOC_MODE_OFF, 0, &local_err);
if (ret < 0) {
error_report_err(local_err);
res->check_errors++;
@@ -889,7 +889,7 @@ static void parallels_close(BlockDriverState *bs)
/* errors are ignored, so we might as well pass exact=true */
bdrv_truncate(bs->file, s->data_end << BDRV_SECTOR_BITS, true,
- PREALLOC_MODE_OFF, NULL);
+ PREALLOC_MODE_OFF, 0, NULL);
}
g_free(s->bat_dirty_bmap);
diff --git a/block/qcow.c b/block/qcow.c
index 8973e4e..6b5f226 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -480,7 +480,7 @@ static int get_cluster_offset(BlockDriverState *bs,
return -E2BIG;
}
ret = bdrv_truncate(bs->file, cluster_offset + s->cluster_size,
- false, PREALLOC_MODE_OFF, NULL);
+ false, PREALLOC_MODE_OFF, 0, NULL);
if (ret < 0) {
return ret;
}
@@ -1035,7 +1035,7 @@ static int qcow_make_empty(BlockDriverState *bs)
l1_length) < 0)
return -1;
ret = bdrv_truncate(bs->file, s->l1_table_offset + l1_length, false,
- PREALLOC_MODE_OFF, NULL);
+ PREALLOC_MODE_OFF, 0, NULL);
if (ret < 0)
return ret;
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index f67ac6b..3a90d75 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -2017,7 +2017,7 @@ static int check_refblocks(BlockDriverState *bs, BdrvCheckResult *res,
}
ret = bdrv_truncate(bs->file, offset + s->cluster_size, false,
- PREALLOC_MODE_OFF, &local_err);
+ PREALLOC_MODE_OFF, 0, &local_err);
if (ret < 0) {
error_report_err(local_err);
goto resize_fail;
diff --git a/block/qcow2.c b/block/qcow2.c
index 977445e..c0fdcb9 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3082,7 +3082,7 @@ static int coroutine_fn preallocate_co(BlockDriverState *bs, uint64_t offset,
mode = PREALLOC_MODE_OFF;
}
ret = bdrv_co_truncate(s->data_file, host_offset + cur_bytes, false,
- mode, errp);
+ mode, 0, errp);
if (ret < 0) {
return ret;
}
@@ -4044,7 +4044,7 @@ static int coroutine_fn qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
* always fulfilled, so there is no need to pass it on.)
*/
bdrv_co_truncate(bs->file, (last_cluster + 1) * s->cluster_size,
- false, PREALLOC_MODE_OFF, &local_err);
+ false, PREALLOC_MODE_OFF, 0, &local_err);
if (local_err) {
warn_reportf_err(local_err,
"Failed to truncate the tail of the image: ");
@@ -4066,7 +4066,8 @@ static int coroutine_fn qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
* file should be resized to the exact target size, too,
* so we pass @exact here.
*/
- ret = bdrv_co_truncate(s->data_file, offset, exact, prealloc, errp);
+ ret = bdrv_co_truncate(s->data_file, offset, exact, prealloc, 0,
+ errp);
if (ret < 0) {
goto fail;
}
@@ -4152,7 +4153,8 @@ static int coroutine_fn qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
new_file_size = allocation_start +
nb_new_data_clusters * s->cluster_size;
/* Image file grows, so @exact does not matter */
- ret = bdrv_co_truncate(bs->file, new_file_size, false, prealloc, errp);
+ ret = bdrv_co_truncate(bs->file, new_file_size, false, prealloc, 0,
+ errp);
if (ret < 0) {
error_prepend(errp, "Failed to resize underlying file: ");
qcow2_free_clusters(bs, allocation_start,
@@ -4255,7 +4257,8 @@ qcow2_co_pwritev_compressed_part(BlockDriverState *bs,
if (len < 0) {
return len;
}
- return bdrv_co_truncate(bs->file, len, false, PREALLOC_MODE_OFF, NULL);
+ return bdrv_co_truncate(bs->file, len, false, PREALLOC_MODE_OFF, 0,
+ NULL);
}
if (offset_into_cluster(s, offset)) {
@@ -4493,7 +4496,7 @@ static int make_completely_empty(BlockDriverState *bs)
}
ret = bdrv_truncate(bs->file, (3 + l1_clusters) * s->cluster_size, false,
- PREALLOC_MODE_OFF, &local_err);
+ PREALLOC_MODE_OFF, 0, &local_err);
if (ret < 0) {
error_report_err(local_err);
goto fail;
diff --git a/block/raw-format.c b/block/raw-format.c
index f994c4a..c3acf9a 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -387,7 +387,7 @@ static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offset,
s->size = offset;
offset += s->offset;
- return bdrv_co_truncate(bs->file, offset, exact, prealloc, errp);
+ return bdrv_co_truncate(bs->file, offset, exact, prealloc, 0, errp);
}
static void raw_eject(BlockDriverState *bs, bool eject_flag)
diff --git a/block/vhdx-log.c b/block/vhdx-log.c
index 13a49c2..404fb5f 100644
--- a/block/vhdx-log.c
+++ b/block/vhdx-log.c
@@ -558,7 +558,7 @@ static int vhdx_log_flush(BlockDriverState *bs, BDRVVHDXState *s,
goto exit;
}
ret = bdrv_truncate(bs->file, new_file_size, false,
- PREALLOC_MODE_OFF, NULL);
+ PREALLOC_MODE_OFF, 0, NULL);
if (ret < 0) {
goto exit;
}
diff --git a/block/vhdx.c b/block/vhdx.c
index 33e57cd..5dfbb20 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -1264,7 +1264,7 @@ static int vhdx_allocate_block(BlockDriverState *bs, BDRVVHDXState *s,
}
return bdrv_truncate(bs->file, *new_offset + s->block_size, false,
- PREALLOC_MODE_OFF, NULL);
+ PREALLOC_MODE_OFF, 0, NULL);
}
/*
diff --git a/block/vmdk.c b/block/vmdk.c
index eb726f2..1bbf937 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -2077,7 +2077,7 @@ vmdk_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset,
}
length = QEMU_ALIGN_UP(length, BDRV_SECTOR_SIZE);
ret = bdrv_truncate(s->extents[i].file, length, false,
- PREALLOC_MODE_OFF, NULL);
+ PREALLOC_MODE_OFF, 0, NULL);
if (ret < 0) {
return ret;
}
diff --git a/include/block/block.h b/include/block/block.h
index b2a3074..4913596 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -348,9 +348,10 @@ BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs,
void bdrv_refresh_filename(BlockDriverState *bs);
int coroutine_fn bdrv_co_truncate(BdrvChild *child, int64_t offset, bool exact,
- PreallocMode prealloc, Error **errp);
+ PreallocMode prealloc, BdrvRequestFlags flags,
+ Error **errp);
int bdrv_truncate(BdrvChild *child, int64_t offset, bool exact,
- PreallocMode prealloc, Error **errp);
+ PreallocMode prealloc, BdrvRequestFlags flags, Error **errp);
int64_t bdrv_nb_sectors(BlockDriverState *bs);
int64_t bdrv_getlength(BlockDriverState *bs);
diff --git a/tests/test-block-iothread.c b/tests/test-block-iothread.c
index 2f3b763..71e9bce 100644
--- a/tests/test-block-iothread.c
+++ b/tests/test-block-iothread.c
@@ -186,18 +186,18 @@ static void test_sync_op_truncate(BdrvChild *c)
int ret;
/* Normal success path */
- ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, NULL);
+ ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, 0, NULL);
g_assert_cmpint(ret, ==, 0);
/* Early error: Negative offset */
- ret = bdrv_truncate(c, -2, false, PREALLOC_MODE_OFF, NULL);
+ ret = bdrv_truncate(c, -2, false, PREALLOC_MODE_OFF, 0, NULL);
g_assert_cmpint(ret, ==, -EINVAL);
/* Error: Read-only image */
c->bs->read_only = true;
c->bs->open_flags &= ~BDRV_O_RDWR;
- ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, NULL);
+ ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, 0, NULL);
g_assert_cmpint(ret, ==, -EACCES);
c->bs->read_only = false;
--
1.8.3.1
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