Re: [Xen-devel] Kernel bug from 3.0 (was phy disks and vifs timing out in DomU)

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

On 09/01/2011 08:44 AM, Ian Campbell wrote:
>
> blkback, xenbus_client and the grant table stuff all use it as well and
> AFAICT have the same requirement for syncing.
>
> $ git grep alloc_vm_area 
> arch/x86/include/asm/xen/grant_table.h:#define xen_alloc_vm_area(size)  
> alloc_vm_area(size)
>
> -- this macro is unused...
>
> arch/x86/xen/grant-table.c:                     xen_alloc_vm_area(PAGE_SIZE * 
> max_nr_gframes);
> drivers/block/xen-blkback/xenbus.c:     blkif->blk_ring_area = 
> alloc_vm_area(PAGE_SIZE);
> drivers/net/xen-netback/netback.c:      vif->tx_comms_area = 
> alloc_vm_area(PAGE_SIZE);
> drivers/net/xen-netback/netback.c:      vif->rx_comms_area = 
> alloc_vm_area(PAGE_SIZE);
> drivers/xen/xenbus/xenbus_client.c:     area = xen_alloc_vm_area(PAGE_SIZE);

Well, 3/5ths unused.

    J

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