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[Qemu-block] [PULL 16/27] block: introduce byte-based io helpers
From: |
Kevin Wolf |
Subject: |
[Qemu-block] [PULL 16/27] block: introduce byte-based io helpers |
Date: |
Tue, 30 Apr 2019 17:42:33 +0200 |
From: Vladimir Sementsov-Ogievskiy <address@hidden>
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
Reviewed-by: Stefano Garzarella <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
include/block/block_int.h | 16 ++++++++++++++++
include/sysemu/block-backend.h | 19 +++++++++++++++++++
2 files changed, 35 insertions(+)
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 01e855a066..94d45c9708 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -925,6 +925,22 @@ int coroutine_fn bdrv_co_pwritev(BdrvChild *child,
int64_t offset, unsigned int bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
+static inline int coroutine_fn bdrv_co_pread(BdrvChild *child,
+ int64_t offset, unsigned int bytes, void *buf, BdrvRequestFlags flags)
+{
+ QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
+
+ return bdrv_co_preadv(child, offset, bytes, &qiov, flags);
+}
+
+static inline int coroutine_fn bdrv_co_pwrite(BdrvChild *child,
+ int64_t offset, unsigned int bytes, void *buf, BdrvRequestFlags flags)
+{
+ QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
+
+ return bdrv_co_pwritev(child, offset, bytes, &qiov, flags);
+}
+
extern unsigned int bdrv_drain_all_count;
void bdrv_apply_subtree_drain(BdrvChild *child, BlockDriverState *new_parent);
void bdrv_unapply_subtree_drain(BdrvChild *child, BlockDriverState
*old_parent);
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 3be05c2d68..5be6224226 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -124,6 +124,25 @@ int coroutine_fn blk_co_preadv(BlockBackend *blk, int64_t
offset,
int coroutine_fn blk_co_pwritev(BlockBackend *blk, int64_t offset,
unsigned int bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
+
+static inline int coroutine_fn blk_co_pread(BlockBackend *blk, int64_t offset,
+ unsigned int bytes, void *buf,
+ BdrvRequestFlags flags)
+{
+ QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
+
+ return blk_co_preadv(blk, offset, bytes, &qiov, flags);
+}
+
+static inline int coroutine_fn blk_co_pwrite(BlockBackend *blk, int64_t offset,
+ unsigned int bytes, void *buf,
+ BdrvRequestFlags flags)
+{
+ QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
+
+ return blk_co_pwritev(blk, offset, bytes, &qiov, flags);
+}
+
int blk_pwrite_zeroes(BlockBackend *blk, int64_t offset,
int bytes, BdrvRequestFlags flags);
BlockAIOCB *blk_aio_pwrite_zeroes(BlockBackend *blk, int64_t offset,
--
2.20.1
- [Qemu-block] [PULL 06/27] block/vhdx: Use IEC binary prefixes for size constants, (continued)
- [Qemu-block] [PULL 06/27] block/vhdx: Use IEC binary prefixes for size constants, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 01/27] tests/qemu-iotests: Fix output of qemu-io related tests, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 07/27] cutils: Fix size_to_str() on 32-bit platforms, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 09/27] qcow2: Avoid COW during metadata preallocation, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 11/27] qcow2: Fix full preallocation with external data file, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 10/27] qcow2: Add errp to preallocate_co(), Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 08/27] qemu-img: Saner printing of large file sizes, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 12/27] iotests: Perform the correct test in 082, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 14/27] qcow2: Fix qcow2_make_empty() with external data file, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 15/27] qcow2: Fix error handling in the compression code, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 16/27] block: introduce byte-based io helpers,
Kevin Wolf <=
- [Qemu-block] [PULL 13/27] qemu-img: Make create hint at protocol options, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 20/27] block/parallels: use buffer-based io, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 23/27] block/stream: use buffer-based io, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 17/27] block/qcow2: use buffer-based io, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 18/27] block/qcow: use buffer-based io, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 21/27] block/backup: use buffer-based io, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 19/27] block/qed: use buffer-based io, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 25/27] commit: Make base read-only if there is an early failure, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 24/27] qemu-img: use buffer-based io, Kevin Wolf, 2019/04/30
- [Qemu-block] [PULL 22/27] block/commit: use buffer-based io, Kevin Wolf, 2019/04/30