diff options
| author | Eric Blake <eblake@redhat.com> | 2019-03-28 23:27:49 -0500 |
|---|---|---|
| committer | Eric Blake <eblake@redhat.com> | 2019-04-01 08:46:52 -0500 |
| commit | 4841211e0d1628cd386b35835676d7f6f9a4fa9d (patch) | |
| tree | 1b8268090b537c4b264b2ba118b0d114297310a1 /include/sysemu/block-backend.h | |
| parent | 9cf638508c0090b33ada4155c7cbb684e08e5ee9 (diff) | |
block: Add bdrv_get_request_alignment()
The next patch needs access to a device's minimum permitted
alignment, since NBD wants to advertise this to clients. Add
an accessor function, borrowing from blk_get_max_transfer()
for accessing a backend's block limits.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20190329042750.14704-6-eblake@redhat.com>
Diffstat (limited to 'include/sysemu/block-backend.h')
| -rw-r--r-- | include/sysemu/block-backend.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index e2066eb06b..3be05c2d68 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -177,6 +177,7 @@ bool blk_is_available(BlockBackend *blk); void blk_lock_medium(BlockBackend *blk, bool locked); void blk_eject(BlockBackend *blk, bool eject_flag); int blk_get_flags(BlockBackend *blk); +uint32_t blk_get_request_alignment(BlockBackend *blk); uint32_t blk_get_max_transfer(BlockBackend *blk); int blk_get_max_iov(BlockBackend *blk); void blk_set_guest_block_size(BlockBackend *blk, int align); |