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xen-block: handle resize callback

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Some frontend drivers will handle dynamic resizing of PV disks, so set up
the BlockDevOps resize_cb() method during xen_block_realize() to allow
this to be done.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
This commit is contained in:
Paul Durrant 2019-01-31 15:33:16 +00:00 • committed by Anthony PERARD
parent 67bc8e00f7
commit 3149f183d7
3 changed files with 38 additions and 7 deletions
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4
hw/block/dataplane/xen-block.c
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@ -50,7 +50,6 @@ struct XenBlockDataPlane {
unsigned int nr_ring_ref;
void *sring;
int64_t file_blk;
int64_t file_size;
int protocol;
blkif_back_rings_t rings;
int more_work;
@ -189,7 +188,7 @@ static int xen_block_parse_request(XenBlockRequest *request)
request->req.seg[i].first_sect + 1) * dataplane->file_blk;
request->size += len;
}
if (request->start + request->size > dataplane->file_size) {
if (request->start + request->size > blk_getlength(dataplane->blk)) {
error_report("error: access beyond end of file");
goto err;
}
@ -638,7 +637,6 @@ XenBlockDataPlane *xen_block_dataplane_create(XenDevice *xendev,
dataplane->xendev = xendev;
dataplane->file_blk = conf->logical_block_size;
dataplane->blk = conf->blk;
dataplane->file_size = blk_getlength(dataplane->blk);
QLIST_INIT(&dataplane->inflight);
QLIST_INIT(&dataplane->freelist);