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block: Avoid bogus flags during mirroring 

Commit e253f4b8 converted mirroring from sector-based bdrv_aio_*
to byte-based blk_aio_*, but failed to account for the subtle
difference in signatures (the former takes a semi-redundant length,
the latter takes a flags parameter).  Since all of our flags are
currently smaller in size than BDRV_SECTOR_SIZE, it has no ill
effects until we either perform sub-sector mirroring, or we start
asserting that no unexpected flags are set.  I found it while
testing new asserts when qemu-iotests 132 started warning about an
unknown flag 0x200000.

Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Eric Blake 2016-06-13 12:56:34 -06:00 committed by Kevin Wolf
parent 604e861362
commit 73698c30ca
1 changed files with 2 additions and 4 deletions
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6
block/mirror.c
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@ -157,8 +157,7 @@ static void mirror_read_complete(void *opaque, int ret)
return;
}
blk_aio_pwritev(s->target, op->sector_num * BDRV_SECTOR_SIZE, &op->qiov,
op->nb_sectors * BDRV_SECTOR_SIZE,
mirror_write_complete, op);
0, mirror_write_complete, op);
}
static inline void mirror_clip_sectors(MirrorBlockJob *s,
@ -274,8 +273,7 @@ static int mirror_do_read(MirrorBlockJob *s, int64_t sector_num,
s->sectors_in_flight += nb_sectors;
trace_mirror_one_iteration(s, sector_num, nb_sectors);
blk_aio_preadv(source, sector_num * BDRV_SECTOR_SIZE, &op->qiov,
nb_sectors * BDRV_SECTOR_SIZE,
blk_aio_preadv(source, sector_num * BDRV_SECTOR_SIZE, &op->qiov, 0,
mirror_read_complete, op);
return ret;
}