[PATCH v2 06/17] block/io: support int64_t bytes in bdrv_aligned_pwritev()

[Vladimir Sementsov-Ogievskiy]

We are generally moving to int64_t for both offset and bytes parameters
on all io paths. Prepare bdrv_aligned_pwritev() now (and convert the
dependencies: bdrv_co_write_req_prepare() and
bdrv_co_write_req_finish() to signed type bytes)

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
 block/io.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/block/io.c b/block/io.c
index c8c30e3699..fe19e09034 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1854,7 +1854,7 @@ 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 +1906,7 @@ 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 +1948,14 @@ 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 +1967,8 @@ 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);
@@ -2067,7 +2069,7 @@ 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) {
-- 
2.21.0