@@ -466,6 +466,9 @@ struct ubuf_info {
#define skb_uarg(SKB) ((struct ubuf_info *)(skb_shinfo(SKB)->destructor_arg))
+int mm_account_pinned_pages(struct mmpin *mmp, size_t size);
+void mm_unaccount_pinned_pages(struct mmpin *mmp);
+
struct ubuf_info *sock_zerocopy_alloc(struct sock *sk, size_t size);
struct ubuf_info *sock_zerocopy_realloc(struct sock *sk, size_t size,
struct ubuf_info *uarg);
@@ -890,7 +890,7 @@ struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src)
}
EXPORT_SYMBOL_GPL(skb_morph);
-static int mm_account_pinned_pages(struct mmpin *mmp, size_t size)
+int mm_account_pinned_pages(struct mmpin *mmp, size_t size)
{
unsigned long max_pg, num_pg, new_pg, old_pg;
struct user_struct *user;
@@ -919,14 +919,16 @@ static int mm_account_pinned_pages(struct mmpin *mmp, size_t size)
return 0;
}
+EXPORT_SYMBOL_GPL(mm_account_pinned_pages);
-static void mm_unaccount_pinned_pages(struct mmpin *mmp)
+void mm_unaccount_pinned_pages(struct mmpin *mmp)
{
if (mmp->user) {
atomic_long_sub(mmp->num_pg, &mmp->user->locked_vm);
free_uid(mmp->user);
}
}
+EXPORT_SYMBOL_GPL(mm_unaccount_pinned_pages);
struct ubuf_info *sock_zerocopy_alloc(struct sock *sk, size_t size)
{
RDS would like to use the helper functions for managing pinned pages added by Commit a91dbff551a6 ("sock: ulimit on MSG_ZEROCOPY pages") Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> --- include/linux/skbuff.h | 3 +++ net/core/skbuff.c | 6 ++++-- 2 files changed, 7 insertions(+), 2 deletions(-)