diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2025-04-28 15:36:55 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2025-05-15 16:16:25 -0400 |
| commit | f4126823c1fd677d9811a0252830c6c73ddb7e99 (patch) | |
| tree | fe2e36f5677146cd22280a55353ff1a159840f47 | |
| parent | 1259560b988c959abf9b84da0b9e56c2863b6837 (diff) | |
sunrpc: Adjust size of socket's receive page array dynamically
As a step towards making NFSD's maximum rsize and wsize variable at
run-time, make sk_pages a flexible array.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
| -rw-r--r-- | include/linux/sunrpc/svcsock.h | 4 | ||||
| -rw-r--r-- | net/sunrpc/svcsock.c | 8 |
2 files changed, 9 insertions, 3 deletions
diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index bf45d9e8492a..963bbe251e52 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -40,7 +40,9 @@ struct svc_sock { struct completion sk_handshake_done; - struct page * sk_pages[RPCSVC_MAXPAGES]; /* received data */ + /* received data */ + unsigned long sk_maxpages; + struct page * sk_pages[] __counted_by(sk_maxpages); }; static inline u32 svc_sock_reclen(struct svc_sock *svsk) diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index d9fdc6ae8020..e1c85123b445 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -1339,7 +1339,8 @@ static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv) svsk->sk_marker = xdr_zero; svsk->sk_tcplen = 0; svsk->sk_datalen = 0; - memset(&svsk->sk_pages[0], 0, sizeof(svsk->sk_pages)); + memset(&svsk->sk_pages[0], 0, + svsk->sk_maxpages * sizeof(struct page *)); tcp_sock_set_nodelay(sk); @@ -1378,10 +1379,13 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv, struct svc_sock *svsk; struct sock *inet; int pmap_register = !(flags & SVC_SOCK_ANONYMOUS); + unsigned long pages; - svsk = kzalloc(sizeof(*svsk), GFP_KERNEL); + pages = svc_serv_maxpages(serv); + svsk = kzalloc(struct_size(svsk, sk_pages, pages), GFP_KERNEL); if (!svsk) return ERR_PTR(-ENOMEM); + svsk->sk_maxpages = pages; inet = sock->sk; |