From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57808) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d5tLw-0000bD-Ay for qemu-devel@nongnu.org; Wed, 03 May 2017 08:25:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d5tLq-00007h-Nr for qemu-devel@nongnu.org; Wed, 03 May 2017 08:25:56 -0400 Received: from mailhub.sw.ru ([195.214.232.25]:48014 helo=relay.sw.ru) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d5tLq-0008Tw-A9 for qemu-devel@nongnu.org; Wed, 03 May 2017 08:25:50 -0400 From: Vladimir Sementsov-Ogievskiy Date: Wed, 3 May 2017 15:25:39 +0300 Message-Id: <20170503122539.282182-26-vsementsov@virtuozzo.com> In-Reply-To: <20170503122539.282182-1-vsementsov@virtuozzo.com> References: <20170503122539.282182-1-vsementsov@virtuozzo.com> Subject: [Qemu-devel] [PATCH 25/25] block: release persistent bitmaps on inactivate List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org, qemu-devel@nongnu.org Cc: kwolf@redhat.com, mreitz@redhat.com, armbru@redhat.com, eblake@redhat.com, jsnow@redhat.com, famz@redhat.com, den@openvz.org, stefanha@redhat.com, vsementsov@virtuozzo.com, pbonzini@redhat.com We should release them here to reload on invalidate cache. Signed-off-by: Vladimir Sementsov-Ogievskiy --- block.c | 4 ++++ block/dirty-bitmap.c | 29 +++++++++++++++++++++++------ include/block/dirty-bitmap.h | 1 + 3 files changed, 28 insertions(+), 6 deletions(-) diff --git a/block.c b/block.c index 795d36bb64..14896c65fa 100644 --- a/block.c +++ b/block.c @@ -4001,6 +4001,10 @@ static int bdrv_inactivate_recurse(BlockDriverState *bs, if (setting_flag) { bs->open_flags |= BDRV_O_INACTIVE; } + + /* At this point persistent bitmaps should be stored by format driver */ + bdrv_release_persistent_dirty_bitmaps(bs); + return 0; } diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 659617a3f8..30fe2b4355 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -296,13 +296,18 @@ void bdrv_dirty_bitmap_truncate(BlockDriverState *bs) } } -static void bdrv_do_release_matching_dirty_bitmap(BlockDriverState *bs, - BdrvDirtyBitmap *bitmap, - bool only_named) +static bool bdrv_dirty_bitmap_has_name(BdrvDirtyBitmap *bitmap) +{ + return !!bdrv_dirty_bitmap_name(bitmap); +} + +static void bdrv_do_release_matching_dirty_bitmap( + BlockDriverState *bs, BdrvDirtyBitmap *bitmap, + bool (*cond)(BdrvDirtyBitmap *bitmap)) { BdrvDirtyBitmap *bm, *next; QLIST_FOREACH_SAFE(bm, &bs->dirty_bitmaps, list, next) { - if ((!bitmap || bm == bitmap) && (!only_named || bm->name)) { + if ((!bitmap || bm == bitmap) && (!cond || cond(bm))) { assert(!bm->active_iterators); assert(!bdrv_dirty_bitmap_frozen(bm)); assert(!bm->meta); @@ -323,7 +328,7 @@ static void bdrv_do_release_matching_dirty_bitmap(BlockDriverState *bs, void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap) { - bdrv_do_release_matching_dirty_bitmap(bs, bitmap, false); + bdrv_do_release_matching_dirty_bitmap(bs, bitmap, NULL); } /** @@ -333,7 +338,19 @@ void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap) */ void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs) { - bdrv_do_release_matching_dirty_bitmap(bs, NULL, true); + bdrv_do_release_matching_dirty_bitmap(bs, NULL, bdrv_dirty_bitmap_has_name); +} + +/** + * Release all persistent dirty bitmaps attached to a BDS (for use in + * bdrv_inactivate_recurse()). + * There must not be any frozen bitmaps attached. + * This function does not remove persistent bitmaps from the storage. + */ +void bdrv_release_persistent_dirty_bitmaps(BlockDriverState *bs) +{ + bdrv_do_release_matching_dirty_bitmap(bs, NULL, + bdrv_dirty_bitmap_get_persistance); } /** diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index 2ee63c46e9..23f669bd2e 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -25,6 +25,7 @@ BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs, void bdrv_dirty_bitmap_make_anon(BdrvDirtyBitmap *bitmap); void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs); +void bdrv_release_persistent_dirty_bitmaps(BlockDriverState *bs); void bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs, const char *name, Error **errp); -- 2.11.1