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block-backend: convert blk_co_copy_range to int64_t bytes 

Function is updated so that parameter type becomes wider, so all
callers should be OK with it.

Look at blk_co_copy_range() itself: bytes is passed only to
blk_check_byte_request() and bdrv_co_copy_range(), which already have
int64_t bytes parameter, so we are OK.

Note that requests exceeding INT_MAX are still restricted by
blk_check_byte_request().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211006131718.214235-10-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: grammar tweaks]
Signed-off-by: Eric Blake <eblake@redhat.com>
master
Vladimir Sementsov-Ogievskiy 2021-10-06 15:17:15 +02:00 committed by Eric Blake
parent 06f0325c5b
commit e192179bb2
2 changed files with 2 additions and 2 deletions
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2
block/block-backend.c
View File

@ -2418,7 +2418,7 @@ void blk_unregister_buf(BlockBackend *blk, void *host)
int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in,
BlockBackend *blk_out, int64_t off_out,
int bytes, BdrvRequestFlags read_flags,
int64_t bytes, BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
int r;

2
include/sysemu/block-backend.h
View File

@ -270,7 +270,7 @@ void blk_unregister_buf(BlockBackend *blk, void *host);
int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in,
BlockBackend *blk_out, int64_t off_out,
int bytes, BdrvRequestFlags read_flags,
int64_t bytes, BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags);
const BdrvChild *blk_root(BlockBackend *blk);