diff mbox series

[v3,net-next,1/7] skbuff: export mm_[un]account_pinned_pages for other modules

Message ID 195217cf6ebdfa3e413a72f2da0532486d638f6c.1518718761.git.sowmini.varadhan@oracle.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series RDS: zerocopy support | expand

Commit Message

Sowmini Varadhan Feb. 15, 2018, 6:49 p.m. UTC 
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(-)

Comments

Willem de Bruijn Feb. 15, 2018, 8:41 p.m. UTC | #1 
On Thu, Feb 15, 2018 at 1:49 PM, Sowmini Varadhan
<sowmini.varadhan@oracle.com> wrote:
> 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>
diff mbox series

Patch

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 5ebc0f8..b1cc38a 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 09bd89c..1a7485a 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)
 {