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GET /api/patches/813851/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 813851,
    "url": "http://patchwork.ozlabs.org/api/patches/813851/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170914144032.14945-15-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": "<20170914144032.14945-15-eblake@redhat.com>",
    "list_archive_url": null,
    "date": "2017-09-14T14:40:26",
    "name": "[v3,14/20] sheepdog: Switch to .bdrv_co_block_status()",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "136d2ebb2df7536727541fc7c81342a9206af333",
    "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/20170914144032.14945-15-eblake@redhat.com/mbox/",
    "series": [
        {
            "id": 3114,
            "url": "http://patchwork.ozlabs.org/api/series/3114/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=3114",
            "date": "2017-09-14T14:40:12",
            "name": "add byte-based block_status driver callbacks",
            "version": 3,
            "mbox": "http://patchwork.ozlabs.org/series/3114/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/813851/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/813851/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": [
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            "ext-mx06.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 3xtLwv3Rm5z9s0Z\n\tfor <incoming@patchwork.ozlabs.org>;\n\tFri, 15 Sep 2017 00:47:43 +1000 (AEST)",
            "from localhost ([::1]:48208 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 1dsVQb-0003Ix-GT\n\tfor incoming@patchwork.ozlabs.org; Thu, 14 Sep 2017 10:47:41 -0400",
            "from eggs.gnu.org ([2001:4830:134:3::10]:46908)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <eblake@redhat.com>) id 1dsVKi-0006DF-4I\n\tfor qemu-devel@nongnu.org; Thu, 14 Sep 2017 10:41:41 -0400",
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            "from mx1.redhat.com ([209.132.183.28]:49000)\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 1dsVKX-0002nB-Mf; Thu, 14 Sep 2017 10:41:25 -0400",
            "from smtp.corp.redhat.com\n\t(int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13])\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 ABA63285B9;\n\tThu, 14 Sep 2017 14:41:24 +0000 (UTC)",
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        ],
        "DMARC-Filter": "OpenDMARC Filter v1.3.2 mx1.redhat.com ABA63285B9",
        "From": "Eric Blake <eblake@redhat.com>",
        "To": "qemu-devel@nongnu.org",
        "Date": "Thu, 14 Sep 2017 09:40:26 -0500",
        "Message-Id": "<20170914144032.14945-15-eblake@redhat.com>",
        "In-Reply-To": "<20170914144032.14945-1-eblake@redhat.com>",
        "References": "<20170914144032.14945-1-eblake@redhat.com>",
        "X-Scanned-By": "MIMEDefang 2.79 on 10.5.11.13",
        "X-Greylist": "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.30]);\n\tThu, 14 Sep 2017 14:41:24 +0000 (UTC)",
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        "X-Received-From": "209.132.183.28",
        "Subject": "[Qemu-devel] [PATCH v3 14/20] sheepdog: Switch to\n\t.bdrv_co_block_status()",
        "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, famz@redhat.com, qemu-block@nongnu.org,\n\tHitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>,\n\tJeff Cody <jcody@redhat.com>, Max Reitz <mreitz@redhat.com>,\n\t\"open list:Sheepdog\" <sheepdog@lists.wpkg.org>,\n\tLiu Yuan <namei.unix@gmail.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": "We are gradually moving away from sector-based interfaces, towards\nbyte-based.  Update the sheepdog driver accordingly.\n\nSigned-off-by: Eric Blake <eblake@redhat.com>\n\n---\nv2: rebase to mapping flag\n---\n block/sheepdog.c | 23 +++++++++++------------\n 1 file changed, 11 insertions(+), 12 deletions(-)",
    "diff": "diff --git a/block/sheepdog.c b/block/sheepdog.c\nindex 696a71442a..09c431decc 100644\n--- a/block/sheepdog.c\n+++ b/block/sheepdog.c\n@@ -2989,18 +2989,17 @@ static coroutine_fn int sd_co_pdiscard(BlockDriverState *bs, int64_t offset,\n }\n\n static coroutine_fn int64_t\n-sd_co_get_block_status(BlockDriverState *bs, int64_t sector_num, int nb_sectors,\n-                       int *pnum, BlockDriverState **file)\n+sd_co_block_status(BlockDriverState *bs, bool mapping, int64_t offset,\n+                   int64_t bytes, int64_t *pnum, BlockDriverState **file)\n {\n     BDRVSheepdogState *s = bs->opaque;\n     SheepdogInode *inode = &s->inode;\n     uint32_t object_size = (UINT32_C(1) << inode->block_size_shift);\n-    uint64_t offset = sector_num * BDRV_SECTOR_SIZE;\n     unsigned long start = offset / object_size,\n-                  end = DIV_ROUND_UP((sector_num + nb_sectors) *\n-                                     BDRV_SECTOR_SIZE, object_size);\n+                  end = DIV_ROUND_UP(offset + bytes, object_size);\n     unsigned long idx;\n-    int64_t ret = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID | offset;\n+    int64_t ret = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID |\n+        (offset & BDRV_BLOCK_OFFSET_MASK);\n\n     for (idx = start; idx < end; idx++) {\n         if (inode->data_vdi_id[idx] == 0) {\n@@ -3017,9 +3016,9 @@ sd_co_get_block_status(BlockDriverState *bs, int64_t sector_num, int nb_sectors,\n         }\n     }\n\n-    *pnum = (idx - start) * object_size / BDRV_SECTOR_SIZE;\n-    if (*pnum > nb_sectors) {\n-        *pnum = nb_sectors;\n+    *pnum = (idx - start) * object_size;\n+    if (*pnum > bytes) {\n+        *pnum = bytes;\n     }\n     if (ret > 0 && ret & BDRV_BLOCK_OFFSET_VALID) {\n         *file = bs;\n@@ -3097,7 +3096,7 @@ static BlockDriver bdrv_sheepdog = {\n     .bdrv_co_writev = sd_co_writev,\n     .bdrv_co_flush_to_disk  = sd_co_flush_to_disk,\n     .bdrv_co_pdiscard = sd_co_pdiscard,\n-    .bdrv_co_get_block_status = sd_co_get_block_status,\n+    .bdrv_co_block_status   = sd_co_block_status,\n\n     .bdrv_snapshot_create   = sd_snapshot_create,\n     .bdrv_snapshot_goto     = sd_snapshot_goto,\n@@ -3133,7 +3132,7 @@ static BlockDriver bdrv_sheepdog_tcp = {\n     .bdrv_co_writev = sd_co_writev,\n     .bdrv_co_flush_to_disk  = sd_co_flush_to_disk,\n     .bdrv_co_pdiscard = sd_co_pdiscard,\n-    .bdrv_co_get_block_status = sd_co_get_block_status,\n+    .bdrv_co_block_status   = sd_co_block_status,\n\n     .bdrv_snapshot_create   = sd_snapshot_create,\n     .bdrv_snapshot_goto     = sd_snapshot_goto,\n@@ -3169,7 +3168,7 @@ static BlockDriver bdrv_sheepdog_unix = {\n     .bdrv_co_writev = sd_co_writev,\n     .bdrv_co_flush_to_disk  = sd_co_flush_to_disk,\n     .bdrv_co_pdiscard = sd_co_pdiscard,\n-    .bdrv_co_get_block_status = sd_co_get_block_status,\n+    .bdrv_co_block_status   = sd_co_block_status,\n\n     .bdrv_snapshot_create   = sd_snapshot_create,\n     .bdrv_snapshot_goto     = sd_snapshot_goto,\n",
    "prefixes": [
        "v3",
        "14/20"
    ]
}