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| author | Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2018-02-15 10:49:32 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-02-16 16:04:16 -0500 |
| commit | 6f89dbce8e1134458de8a8e376acaaca4eee602e (patch) | |
| tree | 4db6ba33d7bd7bc250b69d86a864b57666bbc75a | |
| parent | ee99b2d8bf4ad6d03046a8c2f25bad7cfd9de64a (diff) | |
| download | linux-6f89dbce8e1134458de8a8e376acaaca4eee602e.tar.bz2 | |
skbuff: export mm_[un]account_pinned_pages for other modules
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>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/skbuff.h | 3 | ||||
| -rw-r--r-- | net/core/skbuff.c | 6 |
2 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 5ebc0f869720..b1cc38af53e1 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -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); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 09bd89c90a71..1a7485a2cdfa 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -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) { |