block: define .*_part io handlers in BlockDriver
commitac850bf099f8a356788d487c5205345dfd755fca
authorVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Tue, 4 Jun 2019 16:15:06 +0000 (4 19:15 +0300)
committerStefan Hajnoczi <stefanha@redhat.com>
Tue, 27 Aug 2019 13:58:42 +0000 (27 14:58 +0100)
tree4a28c7ae9b6ff9c90ad8231885eabc7a42df49f6
parent7a3f542fbdfd799be4fa6f8b96dc8c1e6933fce4
block: define .*_part io handlers in BlockDriver

Add handlers supporting qiov_offset parameter:
    bdrv_co_preadv_part
    bdrv_co_pwritev_part
    bdrv_co_pwritev_compressed_part
This is used to reduce need of defining local_qiovs and hd_qiovs in all
corners of block layer code. The following patches will increase usage
of this new API part by part.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190604161514.262241-5-vsementsov@virtuozzo.com
Message-Id: <20190604161514.262241-5-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
block/backup.c
block/io.c
include/block/block_int.h
qemu-img.c