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| author | Eric Blake <eblake@redhat.com> | 2017-09-25 09:55:19 -0500 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-10-06 16:28:58 +0200 |
| commit | 3b5d4df0c6b52746c6194bd2ea65828822db8438 (patch) | |
| tree | 8acbcd8f5f56e08fd2d80c26cfb26fe8f948a721 /block/mirror.c | |
| parent | 9a46dba7b76f5198555819905d1d8235947ba98f (diff) | |
| download | qemu-3b5d4df0c6b52746c6194bd2ea65828822db8438.tar.gz | |
dirty-bitmap: Change bdrv_get_dirty_locked() to take bytes
Half the callers were already scaling bytes to sectors; the other
half can eventually be simplified to use byte iteration. Both
callers were already using the result as a bool, so make that
explicit. Making the change also makes it easier for a future
dirty-bitmap patch to offload scaling over to the internal hbitmap.
Remember, asking whether a byte is dirty is effectively asking
whether the entire granularity containing the byte is dirty, since
we only track dirtiness by granularity.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/mirror.c')
| -rw-r--r-- | block/mirror.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/block/mirror.c b/block/mirror.c index c5212d2c8d..545dfc50aa 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -361,8 +361,7 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s) int64_t next_offset = offset + nb_chunks * s->granularity; int64_t next_chunk = next_offset / s->granularity; if (next_offset >= s->bdev_length || - !bdrv_get_dirty_locked(source, s->dirty_bitmap, - next_offset >> BDRV_SECTOR_BITS)) { + !bdrv_get_dirty_locked(source, s->dirty_bitmap, next_offset)) { break; } if (test_bit(next_chunk, s->in_flight_bitmap)) { |