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| author | Alex Shi <alex.shi@linaro.org> | 2016-01-14 22:25:14 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-01-14 22:25:14 +0800 |
| commit | f90ae1b62bedd8b57966a7be68855f2d43170db6 (patch) | |
| tree | dc332d18219749a17b163d740b8713be5e8d940b /include/net/sock.h | |
| parent | 346a8beb760237fb0fed811045ec92c799f48d54 (diff) | |
| parent | 60917545df1ffc7f918550512dc4a14758f74784 (diff) | |
Merge remote-tracking branch 'lts/linux-3.18.y' into linux-linaro-lsk-v3.18linux-linaro-lsk-v3.18
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 4406dbe491f0..a098ce3cd242 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -819,6 +819,14 @@ static inline __must_check int sk_add_backlog(struct sock *sk, struct sk_buff *s if (sk_rcvqueues_full(sk, limit)) return -ENOBUFS; + /* + * If the skb was allocated from pfmemalloc reserves, only + * allow SOCK_MEMALLOC sockets to use it as this socket is + * helping free memory + */ + if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC)) + return -ENOMEM; + __sk_add_backlog(sk, skb); sk->sk_backlog.len += skb->truesize; return 0; |