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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 /migration/block.c | |
| parent | 9a46dba7b76f5198555819905d1d8235947ba98f (diff) | |
| download | focaccia-qemu-3b5d4df0c6b52746c6194bd2ea65828822db8438.tar.gz focaccia-qemu-3b5d4df0c6b52746c6194bd2ea65828822db8438.zip | |
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 'migration/block.c')
| -rw-r--r-- | migration/block.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/migration/block.c b/migration/block.c index cbcadce168..f5bcf5505c 100644 --- a/migration/block.c +++ b/migration/block.c @@ -535,7 +535,8 @@ static int mig_save_device_dirty(QEMUFile *f, BlkMigDevState *bmds, blk_mig_unlock(); } bdrv_dirty_bitmap_lock(bmds->dirty_bitmap); - if (bdrv_get_dirty_locked(bs, bmds->dirty_bitmap, sector)) { + if (bdrv_get_dirty_locked(bs, bmds->dirty_bitmap, + sector * BDRV_SECTOR_SIZE)) { if (total_sectors - sector < BDRV_SECTORS_PER_DIRTY_CHUNK) { nr_sectors = total_sectors - sector; } else { |