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net: use release_pages() in zerocopy_sg_from_iovec()

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To reduce the duplicated codes.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jason Wang 2013-08-06 17:45:07 +08:00 committed by David S. Miller
parent 234a426708
commit 0433547aa7
1 changed files with 2 additions and 4 deletions
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6
net/core/datagram.c
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@ -48,6 +48,7 @@
#include <linux/highmem.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <net/protocol.h>
#include <linux/skbuff.h>
@ -638,10 +639,7 @@ int zerocopy_sg_from_iovec(struct sk_buff *skb, const struct iovec *from,
return -EMSGSIZE;
num_pages = get_user_pages_fast(base, size, 0, &page[i]);
if (num_pages != size) {
int j;
for (j = 0; j < num_pages; j++)
put_page(page[i + j]);
release_pages(&page[i], num_pages, 0);
return -EFAULT;
}
truesize = size * PAGE_SIZE;