[PATCH] gfp flags annotations - part 1

 - added typedef unsigned int __nocast gfp_t;

 - replaced __nocast uses for gfp flags with gfp_t - it gives exactly
   the same warnings as far as sparse is concerned, doesn't change
   generated code (from gcc point of view we replaced unsigned int with
   typedef) and documents what's going on far better.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 files changed, 50 insertions, 54 deletions

diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 6dfa4a61ffd0..210458624840 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -136,7 +136,7 @@ struct bt_skb_cb {
 };
 #define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb)) 
 
-static inline struct sk_buff *bt_skb_alloc(unsigned int len, unsigned int __nocast how)
+static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
 {
 	struct sk_buff *skb;
 
diff --git a/include/net/bluetooth/rfcomm.h b/include/net/bluetooth/rfcomm.h
index ffea9d54071f..fbe557f7ea1d 100644
--- a/include/net/bluetooth/rfcomm.h
+++ b/include/net/bluetooth/rfcomm.h
@@ -230,7 +230,7 @@ int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
 			u8 xon_char, u8 xoff_char, u16 param_mask);
 
 /* ---- RFCOMM DLCs (channels) ---- */
-struct rfcomm_dlc *rfcomm_dlc_alloc(unsigned int __nocast prio);
+struct rfcomm_dlc *rfcomm_dlc_alloc(gfp_t prio);
 void rfcomm_dlc_free(struct rfcomm_dlc *d);
 int  rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 channel);
 int  rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
diff --git a/include/net/dn_nsp.h b/include/net/dn_nsp.h
index 8a0891e2e888..1ba03be0af3a 100644
--- a/include/net/dn_nsp.h
+++ b/include/net/dn_nsp.h
@@ -19,9 +19,9 @@ extern void dn_nsp_send_data_ack(struct sock *sk);
 extern void dn_nsp_send_oth_ack(struct sock *sk);
 extern void dn_nsp_delayed_ack(struct sock *sk);
 extern void dn_send_conn_ack(struct sock *sk);
-extern void dn_send_conn_conf(struct sock *sk, unsigned int __nocast gfp);
+extern void dn_send_conn_conf(struct sock *sk, gfp_t gfp);
 extern void dn_nsp_send_disc(struct sock *sk, unsigned char type, 
-			unsigned short reason, unsigned int __nocast gfp);
+			unsigned short reason, gfp_t gfp);
 extern void dn_nsp_return_disc(struct sk_buff *skb, unsigned char type,
 				unsigned short reason);
 extern void dn_nsp_send_link(struct sock *sk, unsigned char lsflags, char fcval);
@@ -29,14 +29,14 @@ extern void dn_nsp_send_conninit(struct sock *sk, unsigned char flags);
 
 extern void dn_nsp_output(struct sock *sk);
 extern int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb, struct sk_buff_head *q, unsigned short acknum);
-extern void dn_nsp_queue_xmit(struct sock *sk, struct sk_buff *skb, unsigned int __nocast gfp, int oob);
+extern void dn_nsp_queue_xmit(struct sock *sk, struct sk_buff *skb, gfp_t gfp, int oob);
 extern unsigned long dn_nsp_persist(struct sock *sk);
 extern int dn_nsp_xmit_timeout(struct sock *sk);
 
 extern int dn_nsp_rx(struct sk_buff *);
 extern int dn_nsp_backlog_rcv(struct sock *sk, struct sk_buff *skb);
 
-extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, unsigned int __nocast pri);
+extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, gfp_t pri);
 extern struct sk_buff *dn_alloc_send_skb(struct sock *sk, size_t *size, int noblock, long timeo, int *err);
 
 #define NSP_REASON_OK 0		/* No error */
diff --git a/include/net/dn_route.h b/include/net/dn_route.h
index 11fe973cf383..5122da3f2eb3 100644
--- a/include/net/dn_route.h
+++ b/include/net/dn_route.h
@@ -15,7 +15,7 @@
     GNU General Public License for more details.
 *******************************************************************************/
 
-extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, unsigned int __nocast pri);
+extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, gfp_t pri);
 extern int dn_route_output_sock(struct dst_entry **pprt, struct flowi *, struct sock *sk, int flags);
 extern int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb);
 extern int dn_cache_getroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index 651f824c1008..b0c99060b78d 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -94,7 +94,7 @@ static inline void *inet_csk_ca(const struct sock *sk)
 
 extern struct sock *inet_csk_clone(struct sock *sk,
 				   const struct request_sock *req,
-				   const unsigned int __nocast priority);
+				   const gfp_t priority);
 
 enum inet_csk_ack_state_t {
 	ICSK_ACK_SCHED	= 1,
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index ecb2b061f597..3b5559a023a4 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -832,7 +832,7 @@ extern void ip_vs_app_inc_put(struct ip_vs_app *inc);
 
 extern int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff **pskb);
 extern int ip_vs_app_pkt_in(struct ip_vs_conn *, struct sk_buff **pskb);
-extern int ip_vs_skb_replace(struct sk_buff *skb, unsigned int __nocast pri,
+extern int ip_vs_skb_replace(struct sk_buff *skb, gfp_t pri,
 			     char *o_buf, int o_len, char *n_buf, int n_len);
 extern int ip_vs_app_init(void);
 extern void ip_vs_app_cleanup(void);
diff --git a/include/net/llc_conn.h b/include/net/llc_conn.h
index 54852ff6033b..00730d21b522 100644
--- a/include/net/llc_conn.h
+++ b/include/net/llc_conn.h
@@ -93,7 +93,7 @@ static __inline__ char llc_backlog_type(struct sk_buff *skb)
 	return skb->cb[sizeof(skb->cb) - 1];
 }
 
-extern struct sock *llc_sk_alloc(int family, unsigned int __nocast priority,
+extern struct sock *llc_sk_alloc(int family, gfp_t priority,
 				 struct proto *prot);
 extern void llc_sk_free(struct sock *sk);
 
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index e1d5ec1c23c0..8f241216f46b 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -125,7 +125,7 @@
  */
 extern struct sock *sctp_get_ctl_sock(void);
 extern int sctp_copy_local_addr_list(struct sctp_bind_addr *,
-				     sctp_scope_t, unsigned int __nocast gfp,
+				     sctp_scope_t, gfp_t gfp,
 				     int flags);
 extern struct sctp_pf *sctp_get_pf_specific(sa_family_t family);
 extern int sctp_register_pf(struct sctp_pf *, sa_family_t);
diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
index 58462164d960..1eac3d0eb7a9 100644
--- a/include/net/sctp/sm.h
+++ b/include/net/sctp/sm.h
@@ -181,17 +181,17 @@ const sctp_sm_table_entry_t *sctp_sm_lookup_event(sctp_event_t,
 int sctp_chunk_iif(const struct sctp_chunk *);
 struct sctp_association *sctp_make_temp_asoc(const struct sctp_endpoint *,
 					     struct sctp_chunk *,
-					     unsigned int __nocast gfp);
+					     gfp_t gfp);
 __u32 sctp_generate_verification_tag(void);
 void sctp_populate_tie_tags(__u8 *cookie, __u32 curTag, __u32 hisTag);
 
 /* Prototypes for chunk-building functions.  */
 struct sctp_chunk *sctp_make_init(const struct sctp_association *,
 			     const struct sctp_bind_addr *,
-			     unsigned int __nocast gfp, int vparam_len);
+			     gfp_t gfp, int vparam_len);
 struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *,
 				 const struct sctp_chunk *,
-				 const unsigned int __nocast gfp,
+				 const gfp_t gfp,
 				 const int unkparam_len);
 struct sctp_chunk *sctp_make_cookie_echo(const struct sctp_association *,
 				    const struct sctp_chunk *);
@@ -265,7 +265,7 @@ int sctp_do_sm(sctp_event_t event_type, sctp_subtype_t subtype,
                struct sctp_endpoint *,
                struct sctp_association *asoc,
                void *event_arg,
-	       unsigned int __nocast gfp);
+	       gfp_t gfp);
 
 /* 2nd level prototypes */
 void sctp_generate_t3_rtx_event(unsigned long peer);
@@ -276,7 +276,7 @@ void sctp_ootb_pkt_free(struct sctp_packet *);
 struct sctp_association *sctp_unpack_cookie(const struct sctp_endpoint *,
 				       const struct sctp_association *,
 				       struct sctp_chunk *,
-				       unsigned int __nocast gfp, int *err,
+				       gfp_t gfp, int *err,
 				       struct sctp_chunk **err_chk_p);
 int sctp_addip_addr_config(struct sctp_association *, sctp_param_t,
 			   struct sockaddr_storage*, int);
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 994009bbe3b4..9c385b6417c7 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -446,7 +446,7 @@ struct sctp_ssnmap {
 };
 
 struct sctp_ssnmap *sctp_ssnmap_new(__u16 in, __u16 out,
-				    unsigned int __nocast gfp);
+				    gfp_t gfp);
 void sctp_ssnmap_free(struct sctp_ssnmap *map);
 void sctp_ssnmap_clear(struct sctp_ssnmap *map);
 
@@ -947,7 +947,7 @@ struct sctp_transport {
 };
 
 struct sctp_transport *sctp_transport_new(const union sctp_addr *,
-					  unsigned int __nocast);
+					  gfp_t);
 void sctp_transport_set_owner(struct sctp_transport *,
 			      struct sctp_association *);
 void sctp_transport_route(struct sctp_transport *, union sctp_addr *,
@@ -1095,10 +1095,10 @@ void sctp_bind_addr_init(struct sctp_bind_addr *, __u16 port);
 void sctp_bind_addr_free(struct sctp_bind_addr *);
 int sctp_bind_addr_copy(struct sctp_bind_addr *dest,
 			const struct sctp_bind_addr *src,
-			sctp_scope_t scope, unsigned int __nocast gfp,
+			sctp_scope_t scope, gfp_t gfp,
 			int flags);
 int sctp_add_bind_addr(struct sctp_bind_addr *, union sctp_addr *,
-		       unsigned int __nocast gfp);
+		       gfp_t gfp);
 int sctp_del_bind_addr(struct sctp_bind_addr *, union sctp_addr *);
 int sctp_bind_addr_match(struct sctp_bind_addr *, const union sctp_addr *,
 			 struct sctp_sock *);
@@ -1108,9 +1108,9 @@ union sctp_addr *sctp_find_unmatch_addr(struct sctp_bind_addr	*bp,
 					struct sctp_sock	*opt);
 union sctp_params sctp_bind_addrs_to_raw(const struct sctp_bind_addr *bp,
 					 int *addrs_len,
-					 unsigned int __nocast gfp);
+					 gfp_t gfp);
 int sctp_raw_to_bind_addrs(struct sctp_bind_addr *bp, __u8 *raw, int len,
-			   __u16 port, unsigned int __nocast gfp);
+			   __u16 port, gfp_t gfp);
 
 sctp_scope_t sctp_scope(const union sctp_addr *);
 int sctp_in_scope(const union sctp_addr *addr, const sctp_scope_t scope);
@@ -1239,7 +1239,7 @@ static inline struct sctp_endpoint *sctp_ep(struct sctp_ep_common *base)
 }
 
 /* These are function signatures for manipulating endpoints.  */
-struct sctp_endpoint *sctp_endpoint_new(struct sock *, unsigned int __nocast);
+struct sctp_endpoint *sctp_endpoint_new(struct sock *, gfp_t);
 void sctp_endpoint_free(struct sctp_endpoint *);
 void sctp_endpoint_put(struct sctp_endpoint *);
 void sctp_endpoint_hold(struct sctp_endpoint *);
@@ -1260,7 +1260,7 @@ int sctp_verify_init(const struct sctp_association *asoc, sctp_cid_t,
 		     struct sctp_chunk **err_chunk);
 int sctp_process_init(struct sctp_association *, sctp_cid_t cid,
 		      const union sctp_addr *peer,
-		      sctp_init_chunk_t *init, unsigned int __nocast gfp);
+		      sctp_init_chunk_t *init, gfp_t gfp);
 __u32 sctp_generate_tag(const struct sctp_endpoint *);
 __u32 sctp_generate_tsn(const struct sctp_endpoint *);
 
@@ -1723,7 +1723,7 @@ static inline struct sctp_association *sctp_assoc(struct sctp_ep_common *base)
 
 struct sctp_association *
 sctp_association_new(const struct sctp_endpoint *, const struct sock *,
-		     sctp_scope_t scope, unsigned int __nocast gfp);
+		     sctp_scope_t scope, gfp_t gfp);
 void sctp_association_free(struct sctp_association *);
 void sctp_association_put(struct sctp_association *);
 void sctp_association_hold(struct sctp_association *);
@@ -1739,7 +1739,7 @@ int sctp_assoc_lookup_laddr(struct sctp_association *asoc,
 			    const union sctp_addr *laddr);
 struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *,
 				     const union sctp_addr *address,
-				     const unsigned int __nocast gfp,
+				     const gfp_t gfp,
 				     const int peer_state);
 void sctp_assoc_del_peer(struct sctp_association *asoc,
 			 const union sctp_addr *addr);
@@ -1764,10 +1764,10 @@ void sctp_assoc_rwnd_decrease(struct sctp_association *, unsigned);
 void sctp_assoc_set_primary(struct sctp_association *,
 			    struct sctp_transport *);
 int sctp_assoc_set_bind_addr_from_ep(struct sctp_association *,
-				     unsigned int __nocast);
+				     gfp_t);
 int sctp_assoc_set_bind_addr_from_cookie(struct sctp_association *,
 					 struct sctp_cookie*,
-					 unsigned int __nocast gfp);
+					 gfp_t gfp);
 
 int sctp_cmp_addr_exact(const union sctp_addr *ss1,
 			const union sctp_addr *ss2);
diff --git a/include/net/sctp/ulpevent.h b/include/net/sctp/ulpevent.h
index 90fe4bf6754f..6c40cfc4832d 100644
--- a/include/net/sctp/ulpevent.h
+++ b/include/net/sctp/ulpevent.h
@@ -88,7 +88,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_change(
 	__u16 error,
 	__u16 outbound,
 	__u16 inbound,
-	unsigned int __nocast gfp);
+	gfp_t gfp);
 
 struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
 	const struct sctp_association *asoc,
@@ -96,35 +96,35 @@ struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
 	int flags,
 	int state,
 	int error,
-	unsigned int __nocast gfp);
+	gfp_t gfp);
 
 struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
 	const struct sctp_association *asoc,
 	struct sctp_chunk *chunk,
 	__u16 flags,
-	unsigned int __nocast gfp);
+	gfp_t gfp);
 struct sctp_ulpevent *sctp_ulpevent_make_send_failed(
 	const struct sctp_association *asoc,
 	struct sctp_chunk *chunk,
 	__u16 flags,
 	__u32 error,
-	unsigned int __nocast gfp);
+	gfp_t gfp);
 
 struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event(
 	const struct sctp_association *asoc,
 	__u16 flags,
-	unsigned int __nocast gfp);
+	gfp_t gfp);
 
 struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
 	const struct sctp_association *asoc,
-	__u32 indication, unsigned int __nocast gfp);
+	__u32 indication, gfp_t gfp);
 
 struct sctp_ulpevent *sctp_ulpevent_make_adaption_indication(
-	const struct sctp_association *asoc, unsigned int __nocast gfp);
+	const struct sctp_association *asoc, gfp_t gfp);
 
 struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
 	struct sctp_chunk *chunk,
-	unsigned int __nocast gfp);
+	gfp_t gfp);
 
 void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
 	struct msghdr *);
diff --git a/include/net/sctp/ulpqueue.h b/include/net/sctp/ulpqueue.h
index 1a60c6d943c1..a43c8788b650 100644
--- a/include/net/sctp/ulpqueue.h
+++ b/include/net/sctp/ulpqueue.h
@@ -62,22 +62,19 @@ struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *,
 void sctp_ulpq_free(struct sctp_ulpq *);
 
 /* Add a new DATA chunk for processing. */
-int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *,
-			unsigned int __nocast);
+int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
 
 /* Add a new event for propagation to the ULP. */
 int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sctp_ulpevent *ev);
 
 /* Renege previously received chunks.  */
-void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *,
-		      unsigned int __nocast);
+void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
 
 /* Perform partial delivery. */
-void sctp_ulpq_partial_delivery(struct sctp_ulpq *, struct sctp_chunk *,
-				unsigned int __nocast);
+void sctp_ulpq_partial_delivery(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
 
 /* Abort the partial delivery. */
-void sctp_ulpq_abort_pd(struct sctp_ulpq *, unsigned int __nocast);
+void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t);
 
 /* Clear the partial data delivery condition on this socket. */
 int sctp_clear_pd(struct sock *sk);
diff --git a/include/net/sock.h b/include/net/sock.h
index b6440805c420..ecb75526cba0 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -739,18 +739,18 @@ extern void FASTCALL(release_sock(struct sock *sk));
 #define bh_unlock_sock(__sk)	spin_unlock(&((__sk)->sk_lock.slock))
 
 extern struct sock		*sk_alloc(int family,
-					  unsigned int __nocast priority,
+					  gfp_t priority,
 					  struct proto *prot, int zero_it);
 extern void			sk_free(struct sock *sk);
 extern struct sock		*sk_clone(const struct sock *sk,
-					  const unsigned int __nocast priority);
+					  const gfp_t priority);
 
 extern struct sk_buff		*sock_wmalloc(struct sock *sk,
 					      unsigned long size, int force,
-					      unsigned int __nocast priority);
+					      gfp_t priority);
 extern struct sk_buff		*sock_rmalloc(struct sock *sk,
 					      unsigned long size, int force,
-					      unsigned int __nocast priority);
+					      gfp_t priority);
 extern void			sock_wfree(struct sk_buff *skb);
 extern void			sock_rfree(struct sk_buff *skb);
 
@@ -766,7 +766,7 @@ extern struct sk_buff 		*sock_alloc_send_skb(struct sock *sk,
 						     int noblock,
 						     int *errcode);
 extern void *sock_kmalloc(struct sock *sk, int size,
-			  unsigned int __nocast priority);
+			  gfp_t priority);
 extern void sock_kfree_s(struct sock *sk, void *mem, int size);
 extern void sk_send_sigurg(struct sock *sk);
 
@@ -1201,7 +1201,7 @@ static inline void sk_stream_moderate_sndbuf(struct sock *sk)
 
 static inline struct sk_buff *sk_stream_alloc_pskb(struct sock *sk,
 						   int size, int mem,
-						   unsigned int __nocast gfp)
+						   gfp_t gfp)
 {
 	struct sk_buff *skb;
 	int hdr_len;
@@ -1224,7 +1224,7 @@ static inline struct sk_buff *sk_stream_alloc_pskb(struct sock *sk,
 
 static inline struct sk_buff *sk_stream_alloc_skb(struct sock *sk,
 						  int size,
-						  unsigned int __nocast gfp)
+						  gfp_t gfp)
 {
 	return sk_stream_alloc_pskb(sk, size, 0, gfp);
 }
@@ -1255,7 +1255,7 @@ static inline int sock_writeable(const struct sock *sk)
 	return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf / 2);
 }
 
-static inline unsigned int __nocast gfp_any(void)
+static inline gfp_t gfp_any(void)
 {
 	return in_softirq() ? GFP_ATOMIC : GFP_KERNEL;
 }
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 97af77c4d096..c24339c4e310 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -460,8 +460,7 @@ extern void tcp_send_probe0(struct sock *);
 extern void tcp_send_partial(struct sock *);
 extern int  tcp_write_wakeup(struct sock *);
 extern void tcp_send_fin(struct sock *sk);
-extern void tcp_send_active_reset(struct sock *sk,
-                                  unsigned int __nocast priority);
+extern void tcp_send_active_reset(struct sock *sk, gfp_t priority);
 extern int  tcp_send_synack(struct sock *);
 extern void tcp_push_one(struct sock *, unsigned int mss_now);
 extern void tcp_send_ack(struct sock *sk);
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index b6e72f890c6c..5beae1ccd574 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -875,7 +875,7 @@ static inline int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsig
 } 
 #endif
 
-struct xfrm_policy *xfrm_policy_alloc(unsigned int __nocast gfp);
+struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp);
 extern int xfrm_policy_walk(int (*func)(struct xfrm_policy *, int, int, void*), void *);
 int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
 struct xfrm_policy *xfrm_policy_bysel(int dir, struct xfrm_selector *sel,