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[PATCH v4 16/16] block/io: use int64_t bytes in copy_range
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[PATCH v4 16/16] block/io: use int64_t bytes in copy_range |
Date: |
Fri, 11 Dec 2020 21:39:34 +0300 |
We are generally moving to int64_t for both offset and bytes parameters
on all io paths.
Main motivation is realization of 64-bit write_zeroes operation for
fast zeroing large disk chunks, up to the whole disk.
We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).
So, convert now copy_range parameters which are already 64bit to signed
type.
It's safe as we don't work with requests overflowing BDRV_MAX_LENGTH
(which is less than INT64_MAX), and do check the requests in
bdrv_co_copy_range_internal() (by bdrv_check_request32(), which calls
bdrv_check_request()).
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
include/block/block.h | 6 +++---
include/block/block_int.h | 12 ++++++------
block/io.c | 22 +++++++++++-----------
block/trace-events | 4 ++--
4 files changed, 22 insertions(+), 22 deletions(-)
diff --git a/include/block/block.h b/include/block/block.h
index 3549125f1d..88629eb3a6 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -843,8 +843,8 @@ void bdrv_unregister_buf(BlockDriverState *bs, void *host);
*
* Returns: 0 if succeeded; negative error code if failed.
**/
-int coroutine_fn bdrv_co_copy_range(BdrvChild *src, uint64_t src_offset,
- BdrvChild *dst, uint64_t dst_offset,
- uint64_t bytes, BdrvRequestFlags
read_flags,
+int coroutine_fn bdrv_co_copy_range(BdrvChild *src, int64_t src_offset,
+ BdrvChild *dst, int64_t dst_offset,
+ int64_t bytes, BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags);
#endif
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 5e482a8f08..cee5cb5f85 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -1343,14 +1343,14 @@ void bdrv_dec_in_flight(BlockDriverState *bs);
void blockdev_close_all_bdrv_states(void);
-int coroutine_fn bdrv_co_copy_range_from(BdrvChild *src, uint64_t src_offset,
- BdrvChild *dst, uint64_t dst_offset,
- uint64_t bytes,
+int coroutine_fn bdrv_co_copy_range_from(BdrvChild *src, int64_t src_offset,
+ BdrvChild *dst, int64_t dst_offset,
+ int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags);
-int coroutine_fn bdrv_co_copy_range_to(BdrvChild *src, uint64_t src_offset,
- BdrvChild *dst, uint64_t dst_offset,
- uint64_t bytes,
+int coroutine_fn bdrv_co_copy_range_to(BdrvChild *src, int64_t src_offset,
+ BdrvChild *dst, int64_t dst_offset,
+ int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags);
diff --git a/block/io.c b/block/io.c
index 34dae81fa7..28680a1f64 100644
--- a/block/io.c
+++ b/block/io.c
@@ -3173,8 +3173,8 @@ void bdrv_unregister_buf(BlockDriverState *bs, void *host)
}
static int coroutine_fn bdrv_co_copy_range_internal(
- BdrvChild *src, uint64_t src_offset, BdrvChild *dst,
- uint64_t dst_offset, uint64_t bytes,
+ BdrvChild *src, int64_t src_offset, BdrvChild *dst,
+ int64_t dst_offset, int64_t bytes,
BdrvRequestFlags read_flags, BdrvRequestFlags write_flags,
bool recurse_src)
{
@@ -3252,9 +3252,9 @@ static int coroutine_fn bdrv_co_copy_range_internal(
*
* See the comment of bdrv_co_copy_range for the parameter and return value
* semantics. */
-int coroutine_fn bdrv_co_copy_range_from(BdrvChild *src, uint64_t src_offset,
- BdrvChild *dst, uint64_t dst_offset,
- uint64_t bytes,
+int coroutine_fn bdrv_co_copy_range_from(BdrvChild *src, int64_t src_offset,
+ BdrvChild *dst, int64_t dst_offset,
+ int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
@@ -3268,9 +3268,9 @@ int coroutine_fn bdrv_co_copy_range_from(BdrvChild *src,
uint64_t src_offset,
*
* See the comment of bdrv_co_copy_range for the parameter and return value
* semantics. */
-int coroutine_fn bdrv_co_copy_range_to(BdrvChild *src, uint64_t src_offset,
- BdrvChild *dst, uint64_t dst_offset,
- uint64_t bytes,
+int coroutine_fn bdrv_co_copy_range_to(BdrvChild *src, int64_t src_offset,
+ BdrvChild *dst, int64_t dst_offset,
+ int64_t bytes,
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
@@ -3280,9 +3280,9 @@ int coroutine_fn bdrv_co_copy_range_to(BdrvChild *src,
uint64_t src_offset,
bytes, read_flags, write_flags, false);
}
-int coroutine_fn bdrv_co_copy_range(BdrvChild *src, uint64_t src_offset,
- BdrvChild *dst, uint64_t dst_offset,
- uint64_t bytes, BdrvRequestFlags
read_flags,
+int coroutine_fn bdrv_co_copy_range(BdrvChild *src, int64_t src_offset,
+ BdrvChild *dst, int64_t dst_offset,
+ int64_t bytes, BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
return bdrv_co_copy_range_from(src, src_offset,
diff --git a/block/trace-events b/block/trace-events
index a95d711ade..948df081ba 100644
--- a/block/trace-events
+++ b/block/trace-events
@@ -15,8 +15,8 @@ bdrv_co_preadv_part(void *bs, int64_t offset, int64_t bytes,
unsigned int flags)
bdrv_co_pwritev_part(void *bs, int64_t offset, int64_t bytes, unsigned int
flags) "bs %p offset %" PRId64 " bytes %" PRId64 " flags 0x%x"
bdrv_co_pwrite_zeroes(void *bs, int64_t offset, int64_t bytes, int flags) "bs
%p offset %" PRId64 " bytes %" PRId64 " flags 0x%x"
bdrv_co_do_copy_on_readv(void *bs, int64_t offset, int64_t bytes, int64_t
cluster_offset, int64_t cluster_bytes) "bs %p offset %" PRId64 " bytes %"
PRId64 " cluster_offset %" PRId64 " cluster_bytes %" PRId64
-bdrv_co_copy_range_from(void *src, uint64_t src_offset, void *dst, uint64_t
dst_offset, uint64_t bytes, int read_flags, int write_flags) "src %p offset
%"PRIu64" dst %p offset %"PRIu64" bytes %"PRIu64" rw flags 0x%x 0x%x"
-bdrv_co_copy_range_to(void *src, uint64_t src_offset, void *dst, uint64_t
dst_offset, uint64_t bytes, int read_flags, int write_flags) "src %p offset
%"PRIu64" dst %p offset %"PRIu64" bytes %"PRIu64" rw flags 0x%x 0x%x"
+bdrv_co_copy_range_from(void *src, int64_t src_offset, void *dst, int64_t
dst_offset, int64_t bytes, int read_flags, int write_flags) "src %p offset %"
PRId64 " dst %p offset %" PRId64 " bytes %" PRId64 " rw flags 0x%x 0x%x"
+bdrv_co_copy_range_to(void *src, int64_t src_offset, void *dst, int64_t
dst_offset, int64_t bytes, int read_flags, int write_flags) "src %p offset %"
PRId64 " dst %p offset %" PRId64 " bytes %" PRId64 " rw flags 0x%x 0x%x"
# stream.c
stream_one_iteration(void *s, int64_t offset, uint64_t bytes, int
is_allocated) "s %p offset %" PRId64 " bytes %" PRIu64 " is_allocated %d"
--
2.25.4
- [PATCH v4 00/16] 64bit block-layer: part I, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 01/16] block: refactor bdrv_check_request: add errp, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 04/16] block/io: refactor bdrv_pad_request(): move bdrv_pad_request() up, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 02/16] util/iov: make qemu_iovec_init_extended() honest, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 05/16] block/io: bdrv_pad_request(): support qemu_iovec_init_extended failure, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 03/16] block: fix theoretical overflow in bdrv_init_padding(), Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 06/16] block/throttle-groups: throttle_group_co_io_limits_intercept(): 64bit bytes, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 15/16] block/io: support int64_t bytes in read/write wrappers, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 07/16] block/io: improve bdrv_check_request: check qiov too, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 08/16] block: use int64_t as bytes type in tracked requests, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 16/16] block/io: use int64_t bytes in copy_range,
Vladimir Sementsov-Ogievskiy <=
- [PATCH v4 09/16] block/io: use int64_t bytes in driver wrappers, Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 11/16] block/io: support int64_t bytes in bdrv_aligned_pwritev(), Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 10/16] block/io: support int64_t bytes in bdrv_co_do_pwrite_zeroes(), Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 12/16] block/io: support int64_t bytes in bdrv_co_do_copy_on_readv(), Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 14/16] block/io: support int64_t bytes in bdrv_co_p{read, write}v_part(), Vladimir Sementsov-Ogievskiy, 2020/12/11
- [PATCH v4 13/16] block/io: support int64_t bytes in bdrv_aligned_preadv(), Vladimir Sementsov-Ogievskiy, 2020/12/11
- Re: [PATCH v4 00/16] 64bit block-layer: part I, Vladimir Sementsov-Ogievskiy, 2020/12/14