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authorEric Dumazet <edumazet@google.com>2015-05-15 22:39:25 +0300
committerDavid S. Miller <davem@davemloft.net>2015-05-18 05:45:48 +0300
commit1a24e04e4b50939daa3041682b38b82c896ca438 (patch)
treedc47be63f82d9c6be6d193607688d10b3f78a366 /include/net/sock.h
parent4633c9e07b3b7d7fc262a5f59ff635c1f702af6f (diff)
downloadlinux-1a24e04e4b50939daa3041682b38b82c896ca438.tar.xz
net: fix sk_mem_reclaim_partial()
sk_mem_reclaim_partial() goal is to ensure each socket has one SK_MEM_QUANTUM forward allocation. This is needed both for performance and better handling of memory pressure situations in follow up patches. SK_MEM_QUANTUM is currently a page, but might be reduced to 4096 bytes as some arches have 64KB pages. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sock.h')
-rw-r--r--include/net/sock.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index d882f4c8e438..4581a60636f8 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1368,7 +1368,7 @@ static inline struct inode *SOCK_INODE(struct socket *socket)
* Functions for memory accounting
*/
int __sk_mem_schedule(struct sock *sk, int size, int kind);
-void __sk_mem_reclaim(struct sock *sk);
+void __sk_mem_reclaim(struct sock *sk, int amount);
#define SK_MEM_QUANTUM ((int)PAGE_SIZE)
#define SK_MEM_QUANTUM_SHIFT ilog2(SK_MEM_QUANTUM)
@@ -1409,7 +1409,7 @@ static inline void sk_mem_reclaim(struct sock *sk)
if (!sk_has_account(sk))
return;
if (sk->sk_forward_alloc >= SK_MEM_QUANTUM)
- __sk_mem_reclaim(sk);
+ __sk_mem_reclaim(sk, sk->sk_forward_alloc);
}
static inline void sk_mem_reclaim_partial(struct sock *sk)
@@ -1417,7 +1417,7 @@ static inline void sk_mem_reclaim_partial(struct sock *sk)
if (!sk_has_account(sk))
return;
if (sk->sk_forward_alloc > SK_MEM_QUANTUM)
- __sk_mem_reclaim(sk);
+ __sk_mem_reclaim(sk, sk->sk_forward_alloc - 1);
}
static inline void sk_mem_charge(struct sock *sk, int size)