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[PULL v2 12/20] vduse-blk: Add vduse-blk resize support
From: |
Kevin Wolf |
Subject: |
[PULL v2 12/20] vduse-blk: Add vduse-blk resize support |
Date: |
Fri, 24 Jun 2022 17:40:55 +0200 |
From: Xie Yongji <xieyongji@bytedance.com>
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>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220523084611.91-8-xieyongji@bytedance.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
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 04be16c133..cab1904234 100644
--- a/block/export/vduse-blk.c
+++ b/block/export/vduse-blk.c
@@ -204,6 +204,23 @@ 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)
{
@@ -299,6 +316,8 @@ 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;
}
@@ -308,6 +327,7 @@ 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);
}
--
2.35.3
- [PULL v2 13/20] libvduse: Add support for reconnecting, (continued)
- [PULL v2 13/20] libvduse: Add support for reconnecting, Kevin Wolf, 2022/06/24
- [PULL v2 05/20] block: simplify handling of try to merge different sized bitmaps, Kevin Wolf, 2022/06/24
- [PULL v2 09/20] linux-headers: Add vduse.h, Kevin Wolf, 2022/06/24
- [PULL v2 11/20] vduse-blk: Implement vduse-blk export, Kevin Wolf, 2022/06/24
- [PULL v2 10/20] libvduse: Add VDUSE (vDPA Device in Userspace) library, Kevin Wolf, 2022/06/24
- [PULL v2 08/20] block/export: Abstract out the logic of virtio-blk I/O process, Kevin Wolf, 2022/06/24
- [PULL v2 14/20] qsd: document vduse-blk exports, Kevin Wolf, 2022/06/24
- [PULL v2 15/20] block/rbd: report a better error when namespace does not exist, Kevin Wolf, 2022/06/24
- [PULL v2 12/20] vduse-blk: Add vduse-blk resize support,
Kevin Wolf <=
- [PULL v2 16/20] block/gluster: correctly set max_pdiscard, Kevin Wolf, 2022/06/24
- [PULL v2 17/20] aio_wait_kick: add missing memory barrier, Kevin Wolf, 2022/06/24
- [PULL v2 19/20] vduse-blk: Add serial option, Kevin Wolf, 2022/06/24
- [PULL v2 18/20] nbd: Drop dead code spotted by Coverity, Kevin Wolf, 2022/06/24
- [PULL v2 20/20] vduse-blk: Add name option, Kevin Wolf, 2022/06/24
- Re: [PULL v2 00/20] Block layer patches, Richard Henderson, 2022/06/24