@@ -309,6 +309,23 @@ 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)
{
@@ -400,6 +417,8 @@ 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;
}
@@ -409,6 +428,7 @@ static void vduse_blk_exp_delete(BlockExport *exp)
blk_remove_aio_context_notifier(exp->blk, blk_aio_attached, blk_aio_detach,
vblk_exp);
+ blk_set_dev_ops(exp->blk, NULL, NULL);
vduse_dev_destroy(vblk_exp->dev);
}
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 <xieyongji@bytedance.com> --- block/export/vduse-blk.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)