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s=mimecast20190719; t=1584420004; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=JHxH1i/K0GH7hBo2Xl83uRZs9D8rNYlhtL+6rGnwWgY=; b=gNHF2x5lTFb/JsjaUb2BKh7tfviIeBdyQvCloJeA9qM2NJsAosUD/rquzy49XuDdM8agrs 6o6lureVSmR3iokBdyJoJNUvVD10QqizlgOmv3t/DOe/ArDeuvz41daUOrc1qhicj7xLuP 1ZHNRL+qI6heI0NVOL7j6l59D7t008c= X-MC-Unique: oho-B4u5M6WcU33SxpQaOA-1 From: John Snow To: qemu-devel@nongnu.org, Peter Maydell , jsnow@redhat.com Subject: [PULL 10/10] block/qcow2-bitmap: use bdrv_dirty_bitmap_next_dirty Date: Tue, 17 Mar 2020 00:38:19 -0400 Message-Id: <20200317043819.20197-11-jsnow@redhat.com> In-Reply-To: <20200317043819.20197-1-jsnow@redhat.com> References: <20200317043819.20197-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-loop: libvir-list@redhat.com Cc: Kevin Wolf , Fam Zheng , Vladimir Sementsov-Ogievskiy , qemu-block@nongnu.org, Juan Quintela , libvir-list@redhat.com, "Dr. David Alan Gilbert" , Stefan Hajnoczi , Max Reitz X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: Vladimir Sementsov-Ogievskiy store_bitmap_data() loop does bdrv_set_dirty_iter() on each iteration, which means that we actually don't need iterator itself and we can use simpler bitmap API. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Max Reitz Reviewed-by: John Snow Message-id: 20200205112041.6003-11-vsementsov@virtuozzo.com Signed-off-by: John Snow --- block/qcow2-bitmap.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index 8cccc2c9f3..cb06954b4a 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -1288,7 +1288,6 @@ static uint64_t *store_bitmap_data(BlockDriverState *= bs, uint64_t bm_size =3D bdrv_dirty_bitmap_size(bitmap); const char *bm_name =3D bdrv_dirty_bitmap_name(bitmap); uint8_t *buf =3D NULL; - BdrvDirtyBitmapIter *dbi; uint64_t *tb; uint64_t tb_size =3D size_to_clusters(s, @@ -1307,12 +1306,14 @@ static uint64_t *store_bitmap_data(BlockDriverState= *bs, return NULL; } =20 - dbi =3D bdrv_dirty_iter_new(bitmap); buf =3D g_malloc(s->cluster_size); limit =3D bytes_covered_by_bitmap_cluster(s, bitmap); assert(DIV_ROUND_UP(bm_size, limit) =3D=3D tb_size); =20 - while ((offset =3D bdrv_dirty_iter_next(dbi)) >=3D 0) { + offset =3D 0; + while ((offset =3D bdrv_dirty_bitmap_next_dirty(bitmap, offset, INT64_= MAX)) + >=3D 0) + { uint64_t cluster =3D offset / limit; uint64_t end, write_size; int64_t off; @@ -1355,23 +1356,17 @@ static uint64_t *store_bitmap_data(BlockDriverState= *bs, goto fail; } =20 - if (end >=3D bm_size) { - break; - } - - bdrv_set_dirty_iter(dbi, end); + offset =3D end; } =20 *bitmap_table_size =3D tb_size; g_free(buf); - bdrv_dirty_iter_free(dbi); =20 return tb; =20 fail: clear_bitmap_table(bs, tb, tb_size); g_free(buf); - bdrv_dirty_iter_free(dbi); g_free(tb); =20 return NULL; --=20 2.21.1