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GET /api/patches/813069/?format=api
{ "id": 813069, "url": "http://patchwork.ozlabs.org/api/patches/813069/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170912203119.24166-20-eblake@redhat.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170912203119.24166-20-eblake@redhat.com>", "list_archive_url": null, "date": "2017-09-12T20:31:18", "name": "[v7,19/20] dirty-bitmap: Switch bdrv_set_dirty() to bytes", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a1737eef1f0649d0ca7f1273bcddfe827f4542b8", "submitter": { "id": 6591, "url": "http://patchwork.ozlabs.org/api/people/6591/?format=api", "name": "Eric Blake", "email": "eblake@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170912203119.24166-20-eblake@redhat.com/mbox/", "series": [ { "id": 2770, "url": "http://patchwork.ozlabs.org/api/series/2770/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=2770", "date": "2017-09-12T20:31:00", "name": "make dirty-bitmap byte-based", "version": 7, "mbox": "http://patchwork.ozlabs.org/series/2770/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/813069/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/813069/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)", "ext-mx08.extmail.prod.ext.phx2.redhat.com;\n\tdmarc=none (p=none dis=none) header.from=redhat.com", "ext-mx08.extmail.prod.ext.phx2.redhat.com;\n\tspf=fail smtp.mailfrom=eblake@redhat.com" ], "Received": [ "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xsH2j1tcmz9ryk\n\tfor <incoming@patchwork.ozlabs.org>;\n\tWed, 13 Sep 2017 06:49:01 +1000 (AEST)", "from localhost ([::1]:38540 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1drs79-00028p-EI\n\tfor incoming@patchwork.ozlabs.org; Tue, 12 Sep 2017 16:48:59 -0400", "from eggs.gnu.org ([2001:4830:134:3::10]:39901)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <eblake@redhat.com>) id 1drrr6-0002II-P2\n\tfor qemu-devel@nongnu.org; Tue, 12 Sep 2017 16:32:25 -0400", "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <eblake@redhat.com>) id 1drrr5-0006dD-Jm\n\tfor qemu-devel@nongnu.org; Tue, 12 Sep 2017 16:32:24 -0400", "from mx1.redhat.com ([209.132.183.28]:59122)\n\tby eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from <eblake@redhat.com>)\n\tid 1drrr1-0006XS-AD; Tue, 12 Sep 2017 16:32:19 -0400", "from smtp.corp.redhat.com\n\t(int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id 6733AC0587EF;\n\tTue, 12 Sep 2017 20:32:18 +0000 (UTC)", "from red.redhat.com (ovpn-120-44.rdu2.redhat.com [10.10.120.44])\n\tby smtp.corp.redhat.com (Postfix) with ESMTP id 510285C6D7;\n\tTue, 12 Sep 2017 20:32:11 +0000 (UTC)" ], "DMARC-Filter": "OpenDMARC Filter v1.3.2 mx1.redhat.com 6733AC0587EF", "From": "Eric Blake <eblake@redhat.com>", "To": "qemu-devel@nongnu.org", "Date": "Tue, 12 Sep 2017 15:31:18 -0500", "Message-Id": "<20170912203119.24166-20-eblake@redhat.com>", "In-Reply-To": "<20170912203119.24166-1-eblake@redhat.com>", "References": "<20170912203119.24166-1-eblake@redhat.com>", "X-Scanned-By": "MIMEDefang 2.79 on 10.5.11.11", "X-Greylist": "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.32]);\n\tTue, 12 Sep 2017 20:32:18 +0000 (UTC)", "X-detected-operating-system": "by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]\n\t[fuzzy]", "X-Received-From": "209.132.183.28", "Subject": "[Qemu-devel] [PATCH v7 19/20] dirty-bitmap: Switch bdrv_set_dirty()\n\tto bytes", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<http://lists.nongnu.org/archive/html/qemu-devel/>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "kwolf@redhat.com, vsementsov@virtuozzo.com, Fam Zheng <famz@redhat.com>, \n\tqemu-block@nongnu.org, Max Reitz <mreitz@redhat.com>,\n\tStefan Hajnoczi <stefanha@redhat.com>, jsnow@redhat.com", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "Both callers already had bytes available, but were scaling to\nsectors. Move the scaling to internal code. In the case of\nbdrv_aligned_pwritev(), we are now passing the exact offset\nrather than a rounded sector-aligned value, but that's okay\nas long as dirty bitmap widens start/bytes to granularity\nboundaries.\n\nSigned-off-by: Eric Blake <eblake@redhat.com>\nReviewed-by: John Snow <jsnow@redhat.com>\n\n---\nv4: only context changes\nv3: rebase to lock context changes, R-b kept\nv2: no change\n---\n include/block/block_int.h | 2 +-\n block/io.c | 6 ++----\n block/dirty-bitmap.c | 7 ++++---\n 3 files changed, 7 insertions(+), 8 deletions(-)", "diff": "diff --git a/include/block/block_int.h b/include/block/block_int.h\nindex ba4c383393..55c5d573d4 100644\n--- a/include/block/block_int.h\n+++ b/include/block/block_int.h\n@@ -1021,7 +1021,7 @@ void blk_dev_eject_request(BlockBackend *blk, bool force);\n bool blk_dev_is_tray_open(BlockBackend *blk);\n bool blk_dev_is_medium_locked(BlockBackend *blk);\n\n-void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, int64_t nr_sect);\n+void bdrv_set_dirty(BlockDriverState *bs, int64_t offset, int64_t bytes);\n bool bdrv_requests_pending(BlockDriverState *bs);\n\n void bdrv_clear_dirty_bitmap(BdrvDirtyBitmap *bitmap, HBitmap **out);\ndiff --git a/block/io.c b/block/io.c\nindex 4378ae4c7d..8a0cd8835a 100644\n--- a/block/io.c\n+++ b/block/io.c\n@@ -1334,7 +1334,6 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child,\n bool waited;\n int ret;\n\n- int64_t start_sector = offset >> BDRV_SECTOR_BITS;\n int64_t end_sector = DIV_ROUND_UP(offset + bytes, BDRV_SECTOR_SIZE);\n uint64_t bytes_remaining = bytes;\n int max_transfer;\n@@ -1409,7 +1408,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child,\n bdrv_debug_event(bs, BLKDBG_PWRITEV_DONE);\n\n atomic_inc(&bs->write_gen);\n- bdrv_set_dirty(bs, start_sector, end_sector - start_sector);\n+ bdrv_set_dirty(bs, offset, bytes);\n\n stat64_max(&bs->wr_highest_offset, offset + bytes);\n\n@@ -2438,8 +2437,7 @@ int coroutine_fn bdrv_co_pdiscard(BlockDriverState *bs, int64_t offset,\n ret = 0;\n out:\n atomic_inc(&bs->write_gen);\n- bdrv_set_dirty(bs, req.offset >> BDRV_SECTOR_BITS,\n- req.bytes >> BDRV_SECTOR_BITS);\n+ bdrv_set_dirty(bs, req.offset, req.bytes);\n tracked_request_end(&req);\n bdrv_dec_in_flight(bs);\n return ret;\ndiff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c\nindex b1bbb98653..dd91f56b94 100644\n--- a/block/dirty-bitmap.c\n+++ b/block/dirty-bitmap.c\n@@ -633,10 +633,10 @@ void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap)\n hbitmap_deserialize_finish(bitmap->bitmap);\n }\n\n-void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector,\n- int64_t nr_sectors)\n+void bdrv_set_dirty(BlockDriverState *bs, int64_t offset, int64_t bytes)\n {\n BdrvDirtyBitmap *bitmap;\n+ int64_t end_sector = DIV_ROUND_UP(offset + bytes, BDRV_SECTOR_SIZE);\n\n if (QLIST_EMPTY(&bs->dirty_bitmaps)) {\n return;\n@@ -648,7 +648,8 @@ void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector,\n continue;\n }\n assert(!bdrv_dirty_bitmap_readonly(bitmap));\n- hbitmap_set(bitmap->bitmap, cur_sector, nr_sectors);\n+ hbitmap_set(bitmap->bitmap, offset >> BDRV_SECTOR_BITS,\n+ end_sector - (offset >> BDRV_SECTOR_BITS));\n }\n bdrv_dirty_bitmaps_unlock(bs);\n }\n", "prefixes": [ "v7", "19/20" ] }