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block: Export blk_pwritev_part() in block-backend-io.h 

Also convert it into a generated_co_wrapper.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-10-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
This commit is contained in:
Alberto Faria 2022-07-05 17:15:17 +01:00 committed by Hanna Reitz
parent d1d3fc3d1d
commit 09cca043bf
4 changed files with 23 additions and 19 deletions
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14
block/block-backend.c
View File

@ -1403,20 +1403,6 @@ int coroutine_fn blk_co_pwritev(BlockBackend *blk, int64_t offset,
return blk_co_pwritev_part(blk, offset, bytes, qiov, 0, flags);
}
static int coroutine_fn blk_pwritev_part(BlockBackend *blk, int64_t offset,
int64_t bytes,
QEMUIOVector *qiov, size_t qiov_offset,
BdrvRequestFlags flags)
{
int ret;
blk_inc_in_flight(blk);
ret = blk_do_pwritev_part(blk, offset, bytes, qiov, qiov_offset, flags);
blk_dec_in_flight(blk);
return ret;
}
typedef struct BlkRwCo {
BlockBackend *blk;
int64_t offset;

5
block/coroutines.h
View File

@ -107,11 +107,6 @@ bdrv_common_block_status_above(BlockDriverState *bs,
int generated_co_wrapper
nbd_do_establish_connection(BlockDriverState *bs, bool blocking, Error **errp);
int generated_co_wrapper
blk_do_pwritev_part(BlockBackend *blk, int64_t offset, int64_t bytes,
QEMUIOVector *qiov, size_t qiov_offset,
BdrvRequestFlags flags);
int generated_co_wrapper
blk_do_ioctl(BlockBackend *blk, unsigned long int req, void *buf);

4
include/sysemu/block-backend-io.h
View File

@ -120,6 +120,10 @@ int generated_co_wrapper blk_preadv(BlockBackend *blk, int64_t offset,
int coroutine_fn blk_co_preadv(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int generated_co_wrapper blk_pwritev_part(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
size_t qiov_offset,
BdrvRequestFlags flags);
int coroutine_fn blk_co_pwritev_part(BlockBackend *blk, int64_t offset,
int64_t bytes,
QEMUIOVector *qiov, size_t qiov_offset,

19
tests/unit/test-block-iothread.c
View File

@ -183,6 +183,21 @@ static void test_sync_op_blk_preadv_part(BlockBackend *blk)
g_assert_cmpint(ret, ==, -EIO);
}
static void test_sync_op_blk_pwritev_part(BlockBackend *blk)
{
uint8_t buf[512] = { 0 };
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, sizeof(buf));
int ret;
/* Success */
ret = blk_pwritev_part(blk, 0, sizeof(buf), &qiov, 0, 0);
g_assert_cmpint(ret, ==, 0);
/* Early error: Negative offset */
ret = blk_pwritev_part(blk, -2, sizeof(buf), &qiov, 0, 0);
g_assert_cmpint(ret, ==, -EIO);
}
static void test_sync_op_load_vmstate(BdrvChild *c)
{
uint8_t buf[512];
@ -358,6 +373,10 @@ const SyncOpTest sync_op_tests[] = {
.name = "/sync-op/preadv_part",
.fn = NULL,
.blkfn = test_sync_op_blk_preadv_part,
}, {
.name = "/sync-op/pwritev_part",
.fn = NULL,
.blkfn = test_sync_op_blk_pwritev_part,
}, {
.name = "/sync-op/load_vmstate",
.fn = test_sync_op_load_vmstate,