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xen-netback: Move grant_copy_op array back into struct xenvif.

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This array was allocated separately in commit ac3d5ac2 ("xen-netback:
fix guest-receive-side array sizes") due to it being very large, and a
struct xenvif is allocated as the netdev_priv part of a struct
net_device, i.e. via kmalloc() but falling back to vmalloc() if the
initial alloc. fails.

In preparation for the multi-queue patches, where this array becomes
part of struct xenvif_queue and is always allocated through vzalloc(),
move this back into the struct xenvif.

Signed-off-by: Andrew J. Bennieston <andrew.bennieston@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew J. Bennieston 2014-06-04 10:30:41 +01:00 committed by David S. Miller
parent 9bcc14d239
commit a55d9766ce
2 changed files with 1 additions and 11 deletions
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3
drivers/net/xen-netback/common.h
View file

@ -158,8 +158,7 @@ struct xenvif {
struct timer_list wake_queue;
/* This array is allocated seperately as it is large */
struct gnttab_copy *grant_copy_op;
struct gnttab_copy grant_copy_op[MAX_GRANT_COPY_OPS];
/* We create one meta structure per ring request we consume, so
* the maximum number is the same as the ring size.

9
drivers/net/xen-netback/interface.c
View file

@ -334,14 +334,6 @@ struct xenvif *xenvif_alloc(struct device *parent, domid_t domid,
vif = netdev_priv(dev);
vif->grant_copy_op = vmalloc(sizeof(struct gnttab_copy) *
MAX_GRANT_COPY_OPS);
if (vif->grant_copy_op == NULL) {
pr_warn("Could not allocate grant copy space for %s\n", name);
free_netdev(dev);
return ERR_PTR(-ENOMEM);
}
vif->domid = domid;
vif->handle = handle;
vif->can_sg = 1;
@ -601,7 +593,6 @@ void xenvif_free(struct xenvif *vif)
unregister_netdev(vif->dev);
vfree(vif->grant_copy_op);
free_netdev(vif->dev);
module_put(THIS_MODULE);