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Fri, 21 Jan 2022 00:49:34 -0800 (PST) Received: from localhost ([139.177.225.237]) by smtp.gmail.com with ESMTPSA id b9sm5939869pfm.154.2022.01.21.00.49.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Jan 2022 00:49:34 -0800 (PST) From: Xie Yongji To: Coiby.Xu@gmail.com, stefanha@redhat.com, marcandre.lureau@redhat.com, kwolf@redhat.com, mreitz@redhat.com Subject: [PATCH 2/2] block/export: Add vhost-user-blk resize support Date: Fri, 21 Jan 2022 16:46:44 +0800 Message-Id: <20220121084644.217-2-xieyongji@bytedance.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220121084644.217-1-xieyongji@bytedance.com> References: <20220121084644.217-1-xieyongji@bytedance.com> MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::1036 (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::1036; envelope-from=xieyongji@bytedance.com; helo=mail-pj1-x1036.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 updates the capacity field in configuration space and use vu_notify_config_change() to notify the vhost-user master on the block resize callback. Signed-off-by: Xie Yongji --- block/export/vhost-user-blk-server.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/block/export/vhost-user-blk-server.c b/block/export/vhost-user-blk-server.c index 1862563336..929a0bd007 100644 --- a/block/export/vhost-user-blk-server.c +++ b/block/export/vhost-user-blk-server.c @@ -435,6 +435,20 @@ static void blk_aio_detach(void *opaque) vexp->export.ctx = NULL; } +static void vu_blk_resize(void *opaque) +{ + BlockExport *exp = opaque; + VuBlkExport *vexp = container_of(exp, VuBlkExport, export); + + vexp->blkcfg.capacity = + cpu_to_le64(blk_getlength(exp->blk) >> VIRTIO_BLK_SECTOR_BITS); + vu_notify_config_change(&vexp->vu_server.vu_dev); +} + +static const BlockDevOps vu_block_ops = { + .resize_cb = vu_blk_resize, +}; + static void vu_blk_initialize_config(BlockDriverState *bs, struct virtio_blk_config *config, @@ -513,6 +527,8 @@ static int vu_blk_exp_create(BlockExport *exp, BlockExportOptions *opts, return -EADDRNOTAVAIL; } + blk_set_dev_ops(exp->blk, &vu_block_ops, exp); + return 0; }