@@ -79,12 +79,12 @@ enum BdrvTrackedRequestType {
typedef struct BdrvTrackedRequest {
BlockDriverState *bs;
int64_t offset;
- uint64_t bytes;
+ int64_t bytes;
enum BdrvTrackedRequestType type;
bool serialising;
int64_t overlap_offset;
- uint64_t overlap_bytes;
+ int64_t overlap_bytes;
QLIST_ENTRY(BdrvTrackedRequest) list;
Coroutine *co; /* owner, used for deadlock detection */
@@ -717,10 +717,10 @@ static void tracked_request_end(BdrvTrackedRequest *req)
static void tracked_request_begin(BdrvTrackedRequest *req,
BlockDriverState *bs,
int64_t offset,
- uint64_t bytes,
+ int64_t bytes,
enum BdrvTrackedRequestType type)
{
- assert(bytes <= INT64_MAX && offset <= INT64_MAX - bytes);
+ bdrv_check_request(offset, bytes, &error_abort);
*req = (BdrvTrackedRequest){
.bs = bs,
@@ -741,8 +741,10 @@ static void tracked_request_begin(BdrvTrackedRequest *req,
}
static bool tracked_request_overlaps(BdrvTrackedRequest *req,
- int64_t offset, uint64_t bytes)
+ int64_t offset, int64_t bytes)
{
+ bdrv_check_request(offset, bytes, &error_abort);
+
/* aaaa bbbb */
if (offset >= req->overlap_offset + req->overlap_bytes) {
return false;
@@ -798,10 +800,12 @@ bool bdrv_mark_request_serialising(BdrvTrackedRequest *req, uint64_t align)
{
BlockDriverState *bs = req->bs;
int64_t overlap_offset = req->offset & ~(align - 1);
- uint64_t overlap_bytes = ROUND_UP(req->offset + req->bytes, align)
- - overlap_offset;
+ int64_t overlap_bytes =
+ ROUND_UP(req->offset + req->bytes, align) - overlap_offset;
bool waited;
+ bdrv_check_request(req->offset, req->bytes, &error_abort);
+
qemu_co_mutex_lock(&bs->reqs_lock);
if (!req->serialising) {
qatomic_inc(&req->bs->serialising_in_flight);
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). All requests in block/io must not overflow BDRV_MAX_LENGTH, all external users of BdrvTrackedRequest already have corresponding assertions, so we are safe. Add some assertions still. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- include/block/block_int.h | 4 ++-- block/io.c | 14 +++++++++----- 2 files changed, 11 insertions(+), 7 deletions(-)