diff options
| author | Eric Blake | 2017-09-25 16:55:25 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2017-10-06 16:28:58 +0200 |
| commit | 0fdf1a4f68e5f27df9bb10a7223bd519c8d30e31 (patch) | |
| tree | 89bb889eb6376f30230380c485d24ebda9f46110 /block | |
| parent | qcow2: Switch store_bitmap_data() to byte-based iteration (diff) | |
| download | qemu-0fdf1a4f68e5f27df9bb10a7223bd519c8d30e31.tar.gz qemu-0fdf1a4f68e5f27df9bb10a7223bd519c8d30e31.tar.xz qemu-0fdf1a4f68e5f27df9bb10a7223bd519c8d30e31.zip | |
dirty-bitmap: Switch bdrv_set_dirty() to bytes
Both callers already had bytes available, but were scaling to
sectors. Move the scaling to internal code. In the case of
bdrv_aligned_pwritev(), we are now passing the exact offset
rather than a rounded sector-aligned value, but that's okay
as long as dirty bitmap widens start/bytes to granularity
boundaries.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@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')
| -rw-r--r-- | block/dirty-bitmap.c | 7 | ||||
| -rw-r--r-- | block/io.c | 6 |
2 files changed, 6 insertions, 7 deletions
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 117837b3cc..58a3f330a9 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -628,10 +628,10 @@ void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap) hbitmap_deserialize_finish(bitmap->bitmap); } -void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, - int64_t nr_sectors) +void bdrv_set_dirty(BlockDriverState *bs, int64_t offset, int64_t bytes) { BdrvDirtyBitmap *bitmap; + int64_t end_sector = DIV_ROUND_UP(offset + bytes, BDRV_SECTOR_SIZE); if (QLIST_EMPTY(&bs->dirty_bitmaps)) { return; @@ -643,7 +643,8 @@ void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, continue; } assert(!bdrv_dirty_bitmap_readonly(bitmap)); - hbitmap_set(bitmap->bitmap, cur_sector, nr_sectors); + hbitmap_set(bitmap->bitmap, offset >> BDRV_SECTOR_BITS, + end_sector - (offset >> BDRV_SECTOR_BITS)); } bdrv_dirty_bitmaps_unlock(bs); } diff --git a/block/io.c b/block/io.c index d633b0f851..e0f904583f 100644 --- a/block/io.c +++ b/block/io.c @@ -1334,7 +1334,6 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child, bool waited; int ret; - int64_t start_sector = offset >> BDRV_SECTOR_BITS; int64_t end_sector = DIV_ROUND_UP(offset + bytes, BDRV_SECTOR_SIZE); uint64_t bytes_remaining = bytes; int max_transfer; @@ -1409,7 +1408,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child, bdrv_debug_event(bs, BLKDBG_PWRITEV_DONE); atomic_inc(&bs->write_gen); - bdrv_set_dirty(bs, start_sector, end_sector - start_sector); + bdrv_set_dirty(bs, offset, bytes); stat64_max(&bs->wr_highest_offset, offset + bytes); @@ -2438,8 +2437,7 @@ int coroutine_fn bdrv_co_pdiscard(BlockDriverState *bs, int64_t offset, ret = 0; out: atomic_inc(&bs->write_gen); - bdrv_set_dirty(bs, req.offset >> BDRV_SECTOR_BITS, - req.bytes >> BDRV_SECTOR_BITS); + bdrv_set_dirty(bs, req.offset, req.bytes); tracked_request_end(&req); bdrv_dec_in_flight(bs); return ret; |