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[PATCH 2/3] block/io: convert generic io path to use int64_t parameters
|
From: |
Vladimir Sementsov-Ogievskiy |
|
Subject: |
[PATCH 2/3] block/io: convert generic io path to use int64_t parameters |
|
Date: |
Mon, 30 Mar 2020 17:18:17 +0300 |
We are generally moving to int64_t for both offset and bytes paramaters
on all io paths. Convert generic io path now.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
include/block/block.h | 8 ++--
include/block/block_int.h | 20 ++++-----
block/blkverify.c | 2 +-
block/io.c | 86 +++++++++++++++++++--------------------
block/trace-events | 12 +++---
5 files changed, 64 insertions(+), 64 deletions(-)
diff --git a/include/block/block.h b/include/block/block.h
index b05995fe9c..fa5c7285b6 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -333,7 +333,7 @@ int bdrv_pwrite_sync(BdrvChild *child, int64_t offset,
* because it may allocate memory for the entire region.
*/
int coroutine_fn bdrv_co_pwrite_zeroes(BdrvChild *child, int64_t offset,
- int bytes, BdrvRequestFlags flags);
+ int64_t bytes, BdrvRequestFlags flags);
BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs,
const char *backing_file);
void bdrv_refresh_filename(BlockDriverState *bs);
@@ -731,8 +731,8 @@ 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 c8daba608b..28aea2bcfd 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -972,16 +972,16 @@ extern BlockDriver bdrv_raw;
extern BlockDriver bdrv_qcow2;
int coroutine_fn bdrv_co_preadv(BdrvChild *child,
- int64_t offset, unsigned int bytes, QEMUIOVector *qiov,
+ int64_t offset, int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int coroutine_fn bdrv_co_preadv_part(BdrvChild *child,
- int64_t offset, unsigned int bytes,
+ int64_t offset, int64_t bytes,
QEMUIOVector *qiov, size_t qiov_offset, BdrvRequestFlags flags);
int coroutine_fn bdrv_co_pwritev(BdrvChild *child,
- int64_t offset, unsigned int bytes, QEMUIOVector *qiov,
+ int64_t offset, int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child,
- int64_t offset, unsigned int bytes,
+ int64_t offset, int64_t bytes,
QEMUIOVector *qiov, size_t qiov_offset, BdrvRequestFlags flags);
static inline int coroutine_fn bdrv_co_pread(BdrvChild *child,
@@ -1315,14 +1315,14 @@ 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/blkverify.c b/block/blkverify.c
index ba6b1853ae..667e60d832 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -31,7 +31,7 @@ typedef struct BlkverifyRequest {
uint64_t bytes;
int flags;
- int (*request_fn)(BdrvChild *, int64_t, unsigned int, QEMUIOVector *,
+ int (*request_fn)(BdrvChild *, int64_t, int64_t, QEMUIOVector *,
BdrvRequestFlags);
int ret; /* test image result */
diff --git a/block/io.c b/block/io.c
index 7cbb80bd24..79e3014489 100644
--- a/block/io.c
+++ b/block/io.c
@@ -42,7 +42,7 @@
static void bdrv_parent_cb_resize(BlockDriverState *bs);
static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs,
- int64_t offset, int bytes, BdrvRequestFlags flags);
+ int64_t offset, int64_t bytes, BdrvRequestFlags flags);
static void bdrv_parent_drained_begin(BlockDriverState *bs, BdrvChild *ignore,
bool ignore_bds_parents)
@@ -875,9 +875,9 @@ static bool coroutine_fn
bdrv_wait_serialising_requests(BdrvTrackedRequest *self
}
static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset,
- size_t size)
+ int64_t bytes)
{
- if (size > BDRV_REQUEST_MAX_BYTES) {
+ if (offset < 0 || bytes < 0 || bytes > BDRV_REQUEST_MAX_BYTES) {
return -EIO;
}
@@ -885,10 +885,6 @@ static int bdrv_check_byte_request(BlockDriverState *bs,
int64_t offset,
return -ENOMEDIUM;
}
- if (offset < 0) {
- return -EIO;
- }
-
return 0;
}
@@ -1086,7 +1082,7 @@ static void bdrv_co_io_em_complete(void *opaque, int ret)
}
static int coroutine_fn bdrv_driver_preadv(BlockDriverState *bs,
- uint64_t offset, uint64_t bytes,
+ int64_t offset, int64_t bytes,
QEMUIOVector *qiov,
size_t qiov_offset, int flags)
{
@@ -1155,7 +1151,7 @@ out:
}
static int coroutine_fn bdrv_driver_pwritev(BlockDriverState *bs,
- uint64_t offset, uint64_t bytes,
+ int64_t offset, int64_t bytes,
QEMUIOVector *qiov,
size_t qiov_offset, int flags)
{
@@ -1235,8 +1231,8 @@ emulate_flags:
}
static int coroutine_fn
-bdrv_driver_pwritev_compressed(BlockDriverState *bs, uint64_t offset,
- uint64_t bytes, QEMUIOVector *qiov,
+bdrv_driver_pwritev_compressed(BlockDriverState *bs, int64_t offset,
+ int64_t bytes, QEMUIOVector *qiov,
size_t qiov_offset)
{
BlockDriver *drv = bs->drv;
@@ -1268,7 +1264,7 @@ bdrv_driver_pwritev_compressed(BlockDriverState *bs,
uint64_t offset,
}
static int coroutine_fn bdrv_co_do_copy_on_readv(BdrvChild *child,
- int64_t offset, unsigned int bytes, QEMUIOVector *qiov,
+ int64_t offset, int64_t bytes, QEMUIOVector *qiov,
size_t qiov_offset, int flags)
{
BlockDriverState *bs = child->bs;
@@ -1430,16 +1426,17 @@ err:
* reads; any other features must be implemented by the caller.
*/
static int coroutine_fn bdrv_aligned_preadv(BdrvChild *child,
- BdrvTrackedRequest *req, int64_t offset, unsigned int bytes,
+ BdrvTrackedRequest *req, int64_t offset, int64_t bytes,
int64_t align, QEMUIOVector *qiov, size_t qiov_offset, int flags)
{
BlockDriverState *bs = child->bs;
int64_t total_bytes, max_bytes;
int ret = 0;
- uint64_t bytes_remaining = bytes;
+ int64_t bytes_remaining = bytes;
int max_transfer;
assert(is_power_of_2(align));
+ assert(offset >= 0 && bytes >= 0);
assert((offset & (align - 1)) == 0);
assert((bytes & (align - 1)) == 0);
assert((bs->open_flags & BDRV_O_NO_IO) == 0);
@@ -1590,13 +1587,13 @@ static int bdrv_padding_rmw_read(BdrvChild *child,
{
QEMUIOVector local_qiov;
BlockDriverState *bs = child->bs;
- uint64_t align = bs->bl.request_alignment;
+ int64_t align = bs->bl.request_alignment;
int ret;
assert(req->serialising && pad->buf);
if (pad->head || pad->merge_reads) {
- uint64_t bytes = pad->merge_reads ? pad->buf_len : align;
+ int64_t bytes = pad->merge_reads ? pad->buf_len : align;
qemu_iovec_init_buf(&local_qiov, pad->buf, bytes);
@@ -1667,7 +1664,7 @@ static void bdrv_padding_destroy(BdrvRequestPadding *pad)
*/
static bool bdrv_pad_request(BlockDriverState *bs,
QEMUIOVector **qiov, size_t *qiov_offset,
- int64_t *offset, unsigned int *bytes,
+ int64_t *offset, int64_t *bytes,
BdrvRequestPadding *pad)
{
if (!bdrv_init_padding(bs, *offset, *bytes, pad)) {
@@ -1686,14 +1683,14 @@ static bool bdrv_pad_request(BlockDriverState *bs,
}
int coroutine_fn bdrv_co_preadv(BdrvChild *child,
- int64_t offset, unsigned int bytes, QEMUIOVector *qiov,
+ int64_t offset, int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
return bdrv_co_preadv_part(child, offset, bytes, qiov, 0, flags);
}
int coroutine_fn bdrv_co_preadv_part(BdrvChild *child,
- int64_t offset, unsigned int bytes,
+ int64_t offset, int64_t bytes,
QEMUIOVector *qiov, size_t qiov_offset,
BdrvRequestFlags flags)
{
@@ -1702,7 +1699,7 @@ int coroutine_fn bdrv_co_preadv_part(BdrvChild *child,
BdrvRequestPadding pad;
int ret;
- trace_bdrv_co_preadv(bs, offset, bytes, flags);
+ trace_bdrv_co_preadv_part(bs, offset, bytes, flags);
ret = bdrv_check_byte_request(bs, offset, bytes);
if (ret < 0) {
@@ -1743,7 +1740,7 @@ int coroutine_fn bdrv_co_preadv_part(BdrvChild *child,
}
static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs,
- int64_t offset, int bytes, BdrvRequestFlags flags)
+ int64_t offset, int64_t bytes, BdrvRequestFlags flags)
{
BlockDriver *drv = bs->drv;
QEMUIOVector qiov;
@@ -1773,7 +1770,7 @@ static int coroutine_fn
bdrv_co_do_pwrite_zeroes(BlockDriverState *bs,
assert(max_write_zeroes >= bs->bl.request_alignment);
while (bytes > 0 && !ret) {
- int num = bytes;
+ int64_t num = bytes;
/* Align request. Block drivers can expect the "bulk" of the request
* to be aligned, and that unaligned requests do not cross cluster
@@ -1799,6 +1796,7 @@ static int coroutine_fn
bdrv_co_do_pwrite_zeroes(BlockDriverState *bs,
ret = -ENOTSUP;
/* First try the efficient write zeroes operation */
if (drv->bdrv_co_pwrite_zeroes) {
+ assert(num <= INT_MAX);
ret = drv->bdrv_co_pwrite_zeroes(bs, offset, num,
flags & bs->supported_zero_flags);
if (ret != -ENOTSUP && (flags & BDRV_REQ_FUA) &&
@@ -1854,7 +1852,7 @@ fail:
}
static inline int coroutine_fn
-bdrv_co_write_req_prepare(BdrvChild *child, int64_t offset, uint64_t bytes,
+bdrv_co_write_req_prepare(BdrvChild *child, int64_t offset, int64_t bytes,
BdrvTrackedRequest *req, int flags)
{
BlockDriverState *bs = child->bs;
@@ -1906,7 +1904,7 @@ bdrv_co_write_req_prepare(BdrvChild *child, int64_t
offset, uint64_t bytes,
}
static inline void coroutine_fn
-bdrv_co_write_req_finish(BdrvChild *child, int64_t offset, uint64_t bytes,
+bdrv_co_write_req_finish(BdrvChild *child, int64_t offset, int64_t bytes,
BdrvTrackedRequest *req, int ret)
{
int64_t end_sector = DIV_ROUND_UP(offset + bytes, BDRV_SECTOR_SIZE);
@@ -1948,14 +1946,14 @@ bdrv_co_write_req_finish(BdrvChild *child, int64_t
offset, uint64_t bytes,
* after possibly fragmenting it.
*/
static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child,
- BdrvTrackedRequest *req, int64_t offset, unsigned int bytes,
+ BdrvTrackedRequest *req, int64_t offset, int64_t bytes,
int64_t align, QEMUIOVector *qiov, size_t qiov_offset, int flags)
{
BlockDriverState *bs = child->bs;
BlockDriver *drv = bs->drv;
int ret;
- uint64_t bytes_remaining = bytes;
+ int64_t bytes_remaining = bytes;
int max_transfer;
if (!drv) {
@@ -1967,6 +1965,8 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild
*child,
}
assert(is_power_of_2(align));
+ assert(offset >= 0);
+ assert(bytes >= 0);
assert((offset & (align - 1)) == 0);
assert((bytes & (align - 1)) == 0);
assert(!qiov || qiov_offset + bytes <= qiov->size);
@@ -2030,7 +2030,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild
*child,
static int coroutine_fn bdrv_co_do_zero_pwritev(BdrvChild *child,
int64_t offset,
- unsigned int bytes,
+ int64_t bytes,
BdrvRequestFlags flags,
BdrvTrackedRequest *req)
{
@@ -2067,7 +2067,7 @@ static int coroutine_fn bdrv_co_do_zero_pwritev(BdrvChild
*child,
assert(!bytes || (offset & (align - 1)) == 0);
if (bytes >= align) {
/* Write the aligned part in the middle. */
- uint64_t aligned_bytes = bytes & ~(align - 1);
+ int64_t aligned_bytes = bytes & ~(align - 1);
ret = bdrv_aligned_pwritev(child, req, offset, aligned_bytes, align,
NULL, 0, flags);
if (ret < 0) {
@@ -2097,14 +2097,14 @@ out:
* Handle a write request in coroutine context
*/
int coroutine_fn bdrv_co_pwritev(BdrvChild *child,
- int64_t offset, unsigned int bytes, QEMUIOVector *qiov,
+ int64_t offset, int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
return bdrv_co_pwritev_part(child, offset, bytes, qiov, 0, flags);
}
int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child,
- int64_t offset, unsigned int bytes, QEMUIOVector *qiov, size_t qiov_offset,
+ int64_t offset, int64_t bytes, QEMUIOVector *qiov, size_t qiov_offset,
BdrvRequestFlags flags)
{
BlockDriverState *bs = child->bs;
@@ -2113,7 +2113,7 @@ int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child,
BdrvRequestPadding pad;
int ret;
- trace_bdrv_co_pwritev(child->bs, offset, bytes, flags);
+ trace_bdrv_co_pwritev_part(child->bs, offset, bytes, flags);
if (!bs->drv) {
return -ENOMEDIUM;
@@ -2174,7 +2174,7 @@ out:
}
int coroutine_fn bdrv_co_pwrite_zeroes(BdrvChild *child, int64_t offset,
- int bytes, BdrvRequestFlags flags)
+ int64_t bytes, BdrvRequestFlags flags)
{
trace_bdrv_co_pwrite_zeroes(child->bs, offset, bytes, flags);
@@ -3205,8 +3205,8 @@ 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)
{
@@ -3284,9 +3284,9 @@ 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)
{
@@ -3300,9 +3300,9 @@ 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)
{
@@ -3312,9 +3312,9 @@ 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 29dff8881c..e4d68438af 100644
--- a/block/trace-events
+++ b/block/trace-events
@@ -11,12 +11,12 @@ blk_root_attach(void *child, void *blk, void *bs) "child %p
blk %p bs %p"
blk_root_detach(void *child, void *blk, void *bs) "child %p blk %p bs %p"
# io.c
-bdrv_co_preadv(void *bs, int64_t offset, int64_t nbytes, unsigned int flags)
"bs %p offset %"PRId64" nbytes %"PRId64" flags 0x%x"
-bdrv_co_pwritev(void *bs, int64_t offset, int64_t nbytes, unsigned int flags)
"bs %p offset %"PRId64" nbytes %"PRId64" flags 0x%x"
-bdrv_co_pwrite_zeroes(void *bs, int64_t offset, int count, int flags) "bs %p
offset %"PRId64" count %d flags 0x%x"
-bdrv_co_do_copy_on_readv(void *bs, int64_t offset, unsigned int bytes, int64_t
cluster_offset, int64_t cluster_bytes) "bs %p offset %"PRId64" bytes %u
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_preadv_part(void *bs, int64_t offset, int64_t bytes, int flags) "bs %p
offset %" PRId64 " bytes %" PRId64 " flags 0x%x"
+bdrv_co_pwritev_part(void *bs, int64_t offset, int64_t bytes, 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, 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"
--
2.21.0
- [RFC 0/3] 64bit block-layer part I, Vladimir Sementsov-Ogievskiy, 2020/03/30
- [PATCH 1/3] block: use int64_t as bytes type in tracked requests, Vladimir Sementsov-Ogievskiy, 2020/03/30
- [PATCH 2/3] block/io: convert generic io path to use int64_t parameters,
Vladimir Sementsov-Ogievskiy <=
- [PATCH 3/3] block: use int64_t instead of uint64_t in driver handlers, Vladimir Sementsov-Ogievskiy, 2020/03/30
- Re: [RFC 0/3] 64bit block-layer part I, no-reply, 2020/03/30
- Re: [RFC 0/3] 64bit block-layer part I, no-reply, 2020/03/30
- Re: [RFC 0/3] 64bit block-layer part I, no-reply, 2020/03/30