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block/io: turn on dirty_bitmaps for the compressed writes

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Previously was added the assert:

  commit 1755da16e3
  Author: Paolo Bonzini <pbonzini@redhat.com>
  Date:   Thu Oct 18 16:49:18 2012 +0200
  block: introduce new dirty bitmap functionality

Now the compressed write is always in coroutine and setting the bits is
done after the write, so that we can return the dirty_bitmaps for the
compressed writes.

Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Jeff Cody <jcody@redhat.com>
CC: Markus Armbruster <armbru@redhat.com>
CC: Eric Blake <eblake@redhat.com>
CC: John Snow <jsnow@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Pavel Butsykin 2016-07-22 11:17:49 +03:00 committed by Kevin Wolf
parent 35fadca80e
commit 3ea1a09111
1 changed files with 5 additions and 9 deletions
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14
block/io.c
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@ -896,7 +896,6 @@ bdrv_driver_pwritev_compressed(BlockDriverState *bs, uint64_t offset,
return -ENOTSUP;
}
assert(QLIST_EMPTY(&bs->dirty_bitmaps));
return drv->bdrv_co_pwritev_compressed(bs, offset, bytes, qiov);
}
@ -1318,6 +1317,8 @@ static int coroutine_fn bdrv_aligned_pwritev(BlockDriverState *bs,
} else if (flags & BDRV_REQ_ZERO_WRITE) {
bdrv_debug_event(bs, BLKDBG_PWRITEV_ZERO);
ret = bdrv_co_do_pwrite_zeroes(bs, offset, bytes, flags);
} else if (flags & BDRV_REQ_WRITE_COMPRESSED) {
ret = bdrv_driver_pwritev_compressed(bs, offset, bytes, qiov);
} else if (bytes <= max_transfer) {
bdrv_debug_event(bs, BLKDBG_PWRITEV);
ret = bdrv_driver_pwritev(bs, offset, bytes, qiov, flags);
@ -1569,14 +1570,9 @@ int coroutine_fn bdrv_co_pwritev(BdrvChild *child,
bytes = ROUND_UP(bytes, align);
}
if (flags & BDRV_REQ_WRITE_COMPRESSED) {
ret = bdrv_driver_pwritev_compressed(
bs, offset, bytes, use_local_qiov ? &local_qiov : qiov);
} else {
ret = bdrv_aligned_pwritev(bs, &req, offset, bytes, align,
use_local_qiov ? &local_qiov : qiov,
flags);
}
ret = bdrv_aligned_pwritev(bs, &req, offset, bytes, align,
use_local_qiov ? &local_qiov : qiov,
flags);
fail: