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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1031; envelope-from=xieyongji@bytedance.com; helo=mail-pj1-x1031.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @bytedance-com.20210112.gappssmtp.com) X-ZM-MESSAGEID: 1651650357763100001 Content-Type: text/plain; charset="utf-8" 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 Reviewed-by: Stefan Hajnoczi --- block/export/vduse-blk.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/block/export/vduse-blk.c b/block/export/vduse-blk.c index 8580ae929f..2b72baf7ab 100644 --- a/block/export/vduse-blk.c +++ b/block/export/vduse-blk.c @@ -188,6 +188,23 @@ static void blk_aio_detach(void *opaque) vblk_exp->export.ctx =3D NULL; } =20 +static void vduse_blk_resize(void *opaque) +{ + BlockExport *exp =3D opaque; + VduseBlkExport *vblk_exp =3D container_of(exp, VduseBlkExport, export); + struct virtio_blk_config config; + + config.capacity =3D + 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 =3D { + .resize_cb =3D vduse_blk_resize, +}; + static int vduse_blk_exp_create(BlockExport *exp, BlockExportOptions *opts, Error **errp) { @@ -284,6 +301,8 @@ static int vduse_blk_exp_create(BlockExport *exp, Block= ExportOptions *opts, blk_add_aio_context_notifier(exp->blk, blk_aio_attached, blk_aio_detac= h, vblk_exp); =20 + blk_set_dev_ops(exp->blk, &vduse_block_ops, exp); + return 0; } =20 @@ -293,6 +312,7 @@ static void vduse_blk_exp_delete(BlockExport *exp) =20 blk_remove_aio_context_notifier(exp->blk, blk_aio_attached, blk_aio_de= tach, vblk_exp); + blk_set_dev_ops(exp->blk, NULL, NULL); vduse_dev_destroy(vblk_exp->dev); } =20 --=20 2.20.1