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| author | Hanna Reitz <hreitz@redhat.com> | 2021-08-12 10:41:45 +0200 |
|---|---|---|
| committer | Hanna Reitz <hreitz@redhat.com> | 2021-09-15 15:54:07 +0200 |
| commit | 5a1cfd2150596bddbf429f81097cbd8b861515c0 (patch) | |
| tree | 6489c328deb19c4081f66cc89907bfd1dc5d9328 /os-win32.c | |
| parent | 0bc329fbb009f8601cec23bf2bc48ead0c5a5fa2 (diff) | |
| download | qemu-5a1cfd2150596bddbf429f81097cbd8b861515c0.zip qemu-5a1cfd2150596bddbf429f81097cbd8b861515c0.tar.gz qemu-5a1cfd2150596bddbf429f81097cbd8b861515c0.tar.bz2 | |
block: Clarify that @bytes is no limit on *pnum
.bdrv_co_block_status() implementations are free to return a *pnum that
exceeds @bytes, because bdrv_co_block_status() in block/io.c will clamp
*pnum as necessary.
On the other hand, if drivers' implementations return values for *pnum
that are as large as possible, our recently introduced block-status
cache will become more effective.
So, make a note in block_int.h that @bytes is no upper limit for *pnum.
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210812084148.14458-4-hreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'os-win32.c')
0 files changed, 0 insertions, 0 deletions