From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39790) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f82Ya-0006AV-05 for qemu-devel@nongnu.org; Mon, 16 Apr 2018 07:44:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f82YU-0005kx-TF for qemu-devel@nongnu.org; Mon, 16 Apr 2018 07:44:23 -0400 From: Vladimir Sementsov-Ogievskiy Date: Mon, 16 Apr 2018 14:44:11 +0300 Message-Id: <20180416114414.18406-5-vsementsov@virtuozzo.com> In-Reply-To: <20180416114414.18406-1-vsementsov@virtuozzo.com> References: <20180416114414.18406-1-vsementsov@virtuozzo.com> Subject: [Qemu-devel] [PATCH v2 4/7] dirty-bitmap: separate unused meta-bitmap related functions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, qemu-block@nongnu.org Cc: mreitz@redhat.com, kwolf@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, pbonzini@redhat.com, eblake@redhat.com, armbru@redhat.com, jsnow@redhat.com, famz@redhat.com Separate them in the header and clarify needed locking in comments. Signed-off-by: Vladimir Sementsov-Ogievskiy --- include/block/dirty-bitmap.h | 14 +++++++++----- block/dirty-bitmap.c | 5 +++++ 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index c7e910016d..b7ccfd1363 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -9,9 +9,6 @@ BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, uint32_t granularity, const char *name, Error **errp); -void bdrv_create_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap, - int chunk_size); -void bdrv_release_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap); int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, Error **errp); @@ -45,7 +42,6 @@ void bdrv_set_dirty_bitmap(BdrvDirtyBitmap *bitmap, int64_t offset, int64_t bytes); void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap *bitmap, int64_t offset, int64_t bytes); -BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap); BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap); void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter); @@ -84,7 +80,6 @@ void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter); void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t offset); int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap); -int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap); void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes); bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap); bool bdrv_has_readonly_bitmaps(BlockDriverState *bs); @@ -99,4 +94,13 @@ BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, Error **errp); +/* + * Unused for now meta-bitmaps related functions + */ + +void bdrv_create_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap, int chunk_size); +void bdrv_release_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap); +BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap); +int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap); + #endif diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 6c00288fd7..1812e17549 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -149,6 +149,8 @@ BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, * @bitmap: the block dirty bitmap for which to create a meta dirty bitmap. * @chunk_size: how many bytes of bitmap data does each bit in the meta bitmap * track. + * + * Called with BQL taken. */ void bdrv_create_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap, int chunk_size) @@ -160,6 +162,7 @@ void bdrv_create_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap, qemu_mutex_unlock(bitmap->mutex); } +/* Called with BQL taken. */ void bdrv_release_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap) { assert(bitmap->meta); @@ -529,6 +532,7 @@ BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap) return iter; } +/* Called with BQL and dirty_bitmap_mutex locked. */ BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap) { BdrvDirtyBitmapIter *iter = g_new(BdrvDirtyBitmapIter, 1); @@ -688,6 +692,7 @@ int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap) return hbitmap_count(bitmap->bitmap); } +/* Called with BQL or dirty_bitmap_mutex locked */ int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap) { return hbitmap_count(bitmap->meta); -- 2.11.1