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block: Use BDRV_REQUEST_MAX_BYTES instead of BDRV_REQUEST_MAX_SECTORS 

There are a few places in which we turn a number of bytes into sectors
in order to compare the result against BDRV_REQUEST_MAX_SECTORS
instead of using BDRV_REQUEST_MAX_BYTES directly.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2019-05-14 16:57:35 +03:00 committed by Kevin Wolf
parent b6c246942b
commit 41ae31e3d7
2 changed files with 6 additions and 7 deletions
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6
block/io.c
View File

@ -769,7 +769,7 @@ static bool coroutine_fn wait_serialising_requests(BdrvTrackedRequest *self)
static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset,
size_t size)
{
if (size > BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS) {
if (size > BDRV_REQUEST_MAX_BYTES) {
return -EIO;
}
@ -1017,7 +1017,7 @@ static int coroutine_fn bdrv_driver_preadv(BlockDriverState *bs,
assert((offset & (BDRV_SECTOR_SIZE - 1)) == 0);
assert((bytes & (BDRV_SECTOR_SIZE - 1)) == 0);
assert((bytes >> BDRV_SECTOR_BITS) <= BDRV_REQUEST_MAX_SECTORS);
assert(bytes <= BDRV_REQUEST_MAX_BYTES);
assert(drv->bdrv_co_readv);
return drv->bdrv_co_readv(bs, sector_num, nb_sectors, qiov);
@ -1070,7 +1070,7 @@ static int coroutine_fn bdrv_driver_pwritev(BlockDriverState *bs,
assert((offset & (BDRV_SECTOR_SIZE - 1)) == 0);
assert((bytes & (BDRV_SECTOR_SIZE - 1)) == 0);
assert((bytes >> BDRV_SECTOR_BITS) <= BDRV_REQUEST_MAX_SECTORS);
assert(bytes <= BDRV_REQUEST_MAX_BYTES);
assert(drv->bdrv_co_writev);
ret = drv->bdrv_co_writev(bs, sector_num, nb_sectors, qiov,

7
qemu-io-cmds.c
View File

@ -538,7 +538,7 @@ static int do_write_compressed(BlockBackend *blk, char *buf, int64_t offset,
{
int ret;
if (bytes >> 9 > BDRV_REQUEST_MAX_SECTORS) {
if (bytes > BDRV_REQUEST_MAX_BYTES) {
return -ERANGE;
}
@ -1781,10 +1781,9 @@ static int discard_f(BlockBackend *blk, int argc, char **argv)
if (bytes < 0) {
print_cvtnum_err(bytes, argv[optind]);
return bytes;
} else if (bytes >> BDRV_SECTOR_BITS > BDRV_REQUEST_MAX_SECTORS) {
} else if (bytes > BDRV_REQUEST_MAX_BYTES) {
printf("length cannot exceed %"PRIu64", given %s\n",
(uint64_t)BDRV_REQUEST_MAX_SECTORS << BDRV_SECTOR_BITS,
argv[optind]);
(uint64_t)BDRV_REQUEST_MAX_BYTES, argv[optind]);
return -EINVAL;
}