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Tue, 25 Jan 2022 05:18:40 -0800 (PST) Received: from localhost ([139.177.225.253]) by smtp.gmail.com with ESMTPSA id t15sm449631pjy.17.2022.01.25.05.18.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Jan 2022 05:18:40 -0800 (PST) From: Xie Yongji To: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, kwolf@redhat.com, mreitz@redhat.com, mlureau@redhat.com Subject: [PATCH 4/5] vduse-blk: Add vduse-blk resize support Date: Tue, 25 Jan 2022 21:17:59 +0800 Message-Id: <20220125131800.91-5-xieyongji@bytedance.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220125131800.91-1-xieyongji@bytedance.com> References: <20220125131800.91-1-xieyongji@bytedance.com> MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::42c (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::42c; envelope-from=xieyongji@bytedance.com; helo=mail-pf1-x42c.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" To support block resize, this uses vduse_dev_update_config() to update the capacity field in configuration space and inject config interrupt on the block resize callback. Signed-off-by: Xie Yongji --- block/export/vduse-blk.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/block/export/vduse-blk.c b/block/export/vduse-blk.c index 5a8d289685..83845e9a9a 100644 --- a/block/export/vduse-blk.c +++ b/block/export/vduse-blk.c @@ -297,6 +297,23 @@ static void blk_aio_detach(void *opaque) vblk_exp->export.ctx = NULL; } +static void vduse_blk_resize(void *opaque) +{ + BlockExport *exp = opaque; + VduseBlkExport *vblk_exp = container_of(exp, VduseBlkExport, export); + struct virtio_blk_config config; + + config.capacity = + cpu_to_le64(blk_getlength(exp->blk) >> VIRTIO_BLK_SECTOR_BITS); + vduse_dev_update_config(vblk_exp->dev, sizeof(config.capacity), + offsetof(struct virtio_blk_config, capacity), + (char *)&config.capacity); +} + +static const BlockDevOps vduse_block_ops = { + .resize_cb = vduse_blk_resize, +}; + static int vduse_blk_exp_create(BlockExport *exp, BlockExportOptions *opts, Error **errp) { @@ -387,6 +404,8 @@ static int vduse_blk_exp_create(BlockExport *exp, BlockExportOptions *opts, blk_add_aio_context_notifier(exp->blk, blk_aio_attached, blk_aio_detach, vblk_exp); + blk_set_dev_ops(exp->blk, &vduse_block_ops, exp); + return 0; }