[PATCH] (1/2) inode trimming

	more inode->u trimming - socket_i is killed.

arch/sparc/kernel/sys_sunos.c

@@ -646,7 +646,7 @@ sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
 
 	inode = file->f_dentry->d_inode;
 
-	socket = &inode->u.socket_i;
+	socket = SOCKET_I(inode);
 	local.sin_family = AF_INET;
 	local.sin_addr.s_addr = INADDR_ANY;
 

arch/sparc64/kernel/sys_sunos32.c

@@ -612,7 +612,7 @@ sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
 
 	inode = file->f_dentry->d_inode;
 
-	socket = &inode->u.socket_i;
+	socket = SOCKET_I(inode);
 	local.sin_family = AF_INET;
 	local.sin_addr.s_addr = INADDR_ANY;
 

arch/sparc64/solaris/ioctl.c

@@ -308,7 +308,7 @@ static inline int solaris_sockmod(unsigned int fd, unsigned int cmd, u32 arg)
 	case 110: /* SI_GETUDATA */
 	{
 		int etsdusize, servtype;
-		switch (ino->u.socket_i.type) {
+		switch (SOCKET_I(ino)->type) {
 		case SOCK_STREAM:
 			etsdusize = 1;
 			servtype = 2;
@@ -326,16 +326,16 @@ static inline int solaris_sockmod(unsigned int fd, unsigned int cmd, u32 arg)
 		    __put_user(0, &((struct solaris_si_udata *)A(arg))->so_state) ||
 		    __put_user(0, &((struct solaris_si_udata *)A(arg))->so_options) ||
 		    __put_user(16384, &((struct solaris_si_udata *)A(arg))->tsdusize) ||
-		    __put_user(ino->u.socket_i.ops->family, &((struct solaris_si_udata *)A(arg))->sockparams.sp_family) ||
-		    __put_user(ino->u.socket_i.type, &((struct solaris_si_udata *)A(arg))->sockparams.sp_type) ||
-		    __put_user(ino->u.socket_i.ops->family, &((struct solaris_si_udata *)A(arg))->sockparams.sp_protocol))
+		    __put_user(SOCKET_I(ino)->ops->family, &((struct solaris_si_udata *)A(arg))->sockparams.sp_family) ||
+		    __put_user(SOCKET_I(ino)->type, &((struct solaris_si_udata *)A(arg))->sockparams.sp_type) ||
+		    __put_user(SOCKET_I(ino)->ops->family, &((struct solaris_si_udata *)A(arg))->sockparams.sp_protocol))
 			return (EFAULT << 8) | TSYSERR;
 		return 0;
 	}
 	case 101: /* O_SI_GETUDATA */
 	{
 		int etsdusize, servtype;
-		switch (ino->u.socket_i.type) {
+		switch (SOCKET_I(ino)->type) {
 		case SOCK_STREAM:
 			etsdusize = 1;
 			servtype = 2;

arch/sparc64/solaris/socket.c

@@ -248,12 +248,6 @@ asmlinkage int solaris_getsockname(int fd, struct sockaddr *addr, int *addrlen)
 					   24 for IPv6,
 					   about 80 for AX.25 */
 
-/* XXX These as well... */
-extern __inline__ struct socket *socki_lookup(struct inode *inode)
-{
-	return &inode->u.socket_i;
-}
-
 extern __inline__ struct socket *sockfd_lookup(int fd, int *err)
 {
 	struct file *file;
@@ -265,13 +259,13 @@ extern __inline__ struct socket *sockfd_lookup(int fd, int *err)
 	}
 
 	inode = file->f_dentry->d_inode;
-	if (!inode->i_sock || !socki_lookup(inode)) {
+	if (!inode->i_sock) {
 		*err = -ENOTSOCK;
 		fput(file);
 		return NULL;
 	}
 
-	return socki_lookup(inode);
+	return SOCKET_I(inode);
 }
 
 extern __inline__ void sockfd_put(struct socket *sock)

arch/sparc64/solaris/socksys.c

@@ -6,6 +6,13 @@
  * Copyright (C) 1995, 1996 Mike Jagdis (jaggy@purplet.demon.co.uk)
  */
 
+/*
+ *  Dave, _please_ give me specifications on this fscking mess so that I
+ * could at least get it into the state when it wouldn't screw the rest of
+ * the kernel over.  socksys.c and timod.c _stink_ and we are not talking
+ * H2S here, it's isopropilmercaptan in concentrations way over LD50. -- AV
+ */
+
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
@@ -86,6 +93,9 @@ static int socksys_open(struct inode * inode, struct file * filp)
 		return fd;
 	/*
 	 * N.B. The following operations are not legal!
+	 *
+	 * No shit.  WTF is it supposed to do, anyway?
+	 *
 	 * Try instead:
 	 * d_delete(filp->f_dentry), then d_instantiate with sock inode
 	 */
@@ -93,7 +103,7 @@ static int socksys_open(struct inode * inode, struct file * filp)
 	filp->f_dentry = dget(fcheck(fd)->f_dentry);
 	filp->f_dentry->d_inode->i_rdev = inode->i_rdev;
 	filp->f_dentry->d_inode->i_flock = inode->i_flock;
-	filp->f_dentry->d_inode->u.socket_i.file = filp;
+	SOCKET_I(filp->f_dentry->d_inode)->file = filp;
 	filp->f_op = &socksys_file_ops;
         sock = (struct sol_socket_struct*) 
         	mykmalloc(sizeof(struct sol_socket_struct), GFP_KERNEL);

arch/sparc64/solaris/timod.c

@@ -149,7 +149,7 @@ static void timod_wake_socket(unsigned int fd)
 	struct socket *sock;
 
 	SOLD("wakeing socket");
-	sock = &current->files->fd[fd]->f_dentry->d_inode->u.socket_i;
+	sock = SOCKET_I(current->files->fd[fd]->f_dentry->d_inode);
 	wake_up_interruptible(&sock->wait);
 	read_lock(&sock->sk->callback_lock);
 	if (sock->fasync_list && !test_bit(SOCK_ASYNC_WAITDATA, &sock->flags))
@@ -640,7 +640,7 @@ int timod_getmsg(unsigned int fd, char *ctl_buf, int ctl_maxlen, s32 *ctl_len,
 	ino = filp->f_dentry->d_inode;
 	sock = (struct sol_socket_struct *)filp->private_data;
 	SOLDD(("%p %p\n", sock->pfirst, sock->pfirst ? sock->pfirst->next : NULL));
-	if ( ctl_maxlen > 0 && !sock->pfirst && ino->u.socket_i.type == SOCK_STREAM
+	if ( ctl_maxlen > 0 && !sock->pfirst && SOCKET_I(ino)->type == SOCK_STREAM
 		&& sock->state == TS_IDLE) {
 		SOLD("calling LISTEN");
 		args[0] = fd;
@@ -730,7 +730,7 @@ int timod_getmsg(unsigned int fd, char *ctl_buf, int ctl_maxlen, s32 *ctl_len,
 	*flags_p = 0;
 	if (ctl_maxlen >= 0) {
 		SOLD("ACCEPT perhaps?");
-		if (ino->u.socket_i.type == SOCK_STREAM && sock->state == TS_IDLE) {
+		if (SOCKET_I(ino)->type == SOCK_STREAM && sock->state == TS_IDLE) {
 			struct T_conn_ind ind;
 			char *buf = getpage();
 			int len = BUF_SIZE;

drivers/block/nbd.c

@@ -418,10 +418,13 @@ static int nbd_ioctl(struct inode *inode, struct file *file,
 		file = fget(arg);
 		if (file) {
 			inode = file->f_dentry->d_inode;
-			/* N.B. Should verify that it's a socket */
+			if (inode->i_sock) {
 				lo->file = file;
-			lo->sock = &inode->u.socket_i;
+				lo->sock = SOCKET_I(inode);
 				error = 0;
+			} else {
+				fput(file);
+			}
 		}
 		return error;
 	case NBD_SET_BLKSIZE:

fs/ncpfs/inode.c

@@ -365,7 +365,7 @@ ncp_read_super(struct super_block *sb, void *raw_data, int silent)
 	sock_inode = ncp_filp->f_dentry->d_inode;
 	if (!S_ISSOCK(sock_inode->i_mode))
 		goto out_bad_file2;
-	sock = &sock_inode->u.socket_i;
+	sock = SOCKET_I(sock_inode);
 	if (!sock)
 		goto out_bad_file2;
 		

fs/ncpfs/sock.c

@@ -101,7 +101,7 @@ static int do_ncp_rpc_call(struct ncp_server *server, int size,
 	struct ncp_reply_header reply;
 
 	file = server->ncp_filp;
-	sock = &file->f_dentry->d_inode->u.socket_i;
+	sock = SOCKET_I(file->f_dentry->d_inode);
 
 	init_timeout = server->m.time_out;
 	max_timeout = NCP_MAX_RPC_TIMEOUT;
@@ -269,7 +269,7 @@ static int do_tcp_rcv(struct ncp_server *server, void *buffer, size_t len) {
 	int result = 0;
 	
 	file = server->ncp_filp;
-	sock = &file->f_dentry->d_inode->u.socket_i;
+	sock = SOCKET_I(file->f_dentry->d_inode);
 	
 	dataread = 0;
 
@@ -348,7 +348,7 @@ static int do_ncp_tcp_rpc_call(struct ncp_server *server, int size,
 	*((struct ncp_request_header *) (server->packet));
 
 	file = server->ncp_filp;
-	sock = &file->f_dentry->d_inode->u.socket_i;
+	sock = SOCKET_I(file->f_dentry->d_inode);
 	
 	ncptcp_xmit_hdr[0] = htonl(NCP_TCP_XMIT_MAGIC);
 	ncptcp_xmit_hdr[1] = htonl(size + 16);
@@ -444,7 +444,7 @@ static int ncp_do_request(struct ncp_server *server, int size,
 	}
 #endif /* CONFIG_NCPFS_PACKET_SIGNING */
 	file = server->ncp_filp;
-	sock = &file->f_dentry->d_inode->u.socket_i;
+	sock = SOCKET_I(file->f_dentry->d_inode);
 	/* N.B. this isn't needed ... check socket type? */
 	if (!sock) {
 		printk(KERN_ERR "ncp_rpc_call: socki_lookup failed\n");

fs/smbfs/sock.c

@@ -176,7 +176,7 @@ int
 smb_valid_socket(struct inode * inode)
 {
 	return (inode && S_ISSOCK(inode->i_mode) && 
-		inode->u.socket_i.type == SOCK_STREAM);
+		SOCKET_I(inode)->type == SOCK_STREAM);
 }
 
 static struct socket *
@@ -190,7 +190,7 @@ server_sock(struct smb_sb_info *server)
 		if (!smb_valid_socket(file->f_dentry->d_inode))
 			PARANOIA("bad socket!\n");
 #endif
-		return &file->f_dentry->d_inode->u.socket_i;
+		return SOCKET_I(file->f_dentry->d_inode);
 	}
 	return NULL;
 }

include/linux/fs.h

@@ -456,11 +456,25 @@ struct inode {
 		/* struct umsdos_inode_info	umsdos_i; */
 		struct romfs_inode_info		romfs_i;
 		struct proc_inode_info		proc_i;
-		struct socket			socket_i;
 		void				*generic_ip;
 	} u;
 };
 
+struct socket_alloc {
+	struct socket socket;
+	struct inode vfs_inode;
+};
+
+static inline struct socket *SOCKET_I(struct inode *inode)
+{
+	return &list_entry(inode, struct socket_alloc, vfs_inode)->socket;
+}
+
+static inline struct inode *SOCK_INODE(struct socket *socket)
+{
+	return &list_entry(socket, struct socket_alloc, socket)->vfs_inode;
+}
+
 #include <linux/shmem_fs.h>
 /* will die */
 #include <linux/coda_fs_i.h>

include/linux/net.h

@@ -23,6 +23,7 @@
 #include <linux/wait.h>
 
 struct poll_table_struct;
+struct inode;
 
 #define NPROTO		32		/* should be enough for now..	*/
 
@@ -68,7 +69,6 @@ struct socket
 
 	unsigned long		flags;
 	struct proto_ops	*ops;
-	struct inode		*inode;
 	struct fasync_struct	*fasync_list;	/* Asynchronous wake up list	*/
 	struct file		*file;		/* File back pointer for gc	*/
 	struct sock		*sk;
@@ -78,8 +78,6 @@ struct socket
 	unsigned char		passcred;
 };
 
-#define SOCK_INODE(S)	((S)->inode)
-
 struct scm_cookie;
 struct vm_area_struct;
 struct page;

include/net/sock.h

@@ -1022,7 +1022,7 @@ static inline int sock_i_uid(struct sock *sk)
 	int uid;
 
 	read_lock(&sk->callback_lock);
-	uid = sk->socket ? sk->socket->inode->i_uid : 0;
+	uid = sk->socket ? SOCK_INODE(sk->socket)->i_uid : 0;
 	read_unlock(&sk->callback_lock);
 	return uid;
 }
@@ -1032,7 +1032,7 @@ static inline unsigned long sock_i_ino(struct sock *sk)
 	unsigned long ino;
 
 	read_lock(&sk->callback_lock);
-	ino = sk->socket ? sk->socket->inode->i_ino : 0;
+	ino = sk->socket ? SOCK_INODE(sk->socket)->i_ino : 0;
 	read_unlock(&sk->callback_lock);
 	return ino;
 }

net/ax25/af_ax25.c

@@ -1756,7 +1756,7 @@ static int ax25_get_info(char *buffer, char **start, off_t offset, int length)
 			len += sprintf(buffer + len, " %d %d %ld\n",
 				atomic_read(&ax25->sk->wmem_alloc),
 				atomic_read(&ax25->sk->rmem_alloc),
-				ax25->sk->socket != NULL ? ax25->sk->socket->inode->i_ino : 0L);
+				ax25->sk->socket != NULL ? SOCK_INODE(ax25->sk->socket)->i_ino : 0L);
 		} else {
 			len += sprintf(buffer + len, " * * *\n");
 		}

net/ipv6/icmp.c

@@ -637,21 +637,11 @@ int __init icmpv6_init(struct net_proto_family *ops)
 	struct sock *sk;
 	int err;
 
-	icmpv6_socket = sock_alloc();
-	if (icmpv6_socket == NULL) {
-		printk(KERN_ERR
-		       "Failed to create the ICMP6 control socket.\n");
-		return -1;
-	}
-	icmpv6_socket->inode->i_uid = 0;
-	icmpv6_socket->inode->i_gid = 0;
-	icmpv6_socket->type = SOCK_RAW;
-
-	if ((err = ops->create(icmpv6_socket, IPPROTO_ICMPV6)) < 0) {
+	err = sock_create(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6, &icmpv6_socket);
+	if (err < 0) {
 		printk(KERN_ERR
 		       "Failed to initialize the ICMP6 control socket (err %d).\n",
 		       err);
-		sock_release(icmpv6_socket);
 		icmpv6_socket = NULL; /* for safety */
 		return err;
 	}

net/ipv6/mcast.c

@@ -751,21 +751,11 @@ int __init igmp6_init(struct net_proto_family *ops)
 	struct sock *sk;
 	int err;
 
-	igmp6_socket = sock_alloc();
-	if (igmp6_socket == NULL) {
+	err = sock_create(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6, &igmp6_socket);
+	if (err < 0) {
 		printk(KERN_ERR
-		       "Failed to create the IGMP6 control socket.\n");
-		return -1;
-	}
-	igmp6_socket->inode->i_uid = 0;
-	igmp6_socket->inode->i_gid = 0;
-	igmp6_socket->type = SOCK_RAW;
-
-	if((err = ops->create(igmp6_socket, IPPROTO_ICMPV6)) < 0) {
-		printk(KERN_DEBUG 
 		       "Failed to initialize the IGMP6 control socket (err %d).\n",
 		       err);
-		sock_release(igmp6_socket);
 		igmp6_socket = NULL; /* For safety. */
 		return err;
 	}

net/ipv6/ndisc.c

@@ -1214,21 +1214,11 @@ int __init ndisc_init(struct net_proto_family *ops)
 	struct sock *sk;
         int err;
 
-	ndisc_socket = sock_alloc();
-	if (ndisc_socket == NULL) {
+	err = sock_create(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6, &ndisc_socket);
+	if (err < 0) {
 		printk(KERN_ERR
-		       "Failed to create the NDISC control socket.\n");
-		return -1;
-	}
-	ndisc_socket->inode->i_uid = 0;
-	ndisc_socket->inode->i_gid = 0;
-	ndisc_socket->type = SOCK_RAW;
-
-	if((err = ops->create(ndisc_socket, IPPROTO_ICMPV6)) < 0) {
-		printk(KERN_DEBUG 
 		       "Failed to initialize the NDISC control socket (err %d).\n",
 		       err);
-		sock_release(ndisc_socket);
 		ndisc_socket = NULL; /* For safety. */
 		return err;
 	}

net/netrom/af_netrom.c

@@ -1204,7 +1204,7 @@ static int nr_get_info(char *buffer, char **start, off_t offset, int length)
 			s->protinfo.nr->window,
 			atomic_read(&s->wmem_alloc),
 			atomic_read(&s->rmem_alloc),
-			s->socket != NULL ? s->socket->inode->i_ino : 0L);
+			s->socket != NULL ? SOCK_INODE(s->socket)->i_ino : 0L);
 
 		pos = begin + len;
 

net/packet/af_packet.c

@@ -1575,7 +1575,7 @@ static void packet_mm_open(struct vm_area_struct *vma)
 {
 	struct file *file = vma->vm_file;
 	struct inode *inode = file->f_dentry->d_inode;
-	struct socket * sock = &inode->u.socket_i;
+	struct socket * sock = SOCKET_I(inode);
 	struct sock *sk = sock->sk;
 	
 	if (sk)
@@ -1586,7 +1586,7 @@ static void packet_mm_close(struct vm_area_struct *vma)
 {
 	struct file *file = vma->vm_file;
 	struct inode *inode = file->f_dentry->d_inode;
-	struct socket * sock = &inode->u.socket_i;
+	struct socket * sock = SOCKET_I(inode);
 	struct sock *sk = sock->sk;
 	
 	if (sk)

net/rose/af_rose.c

@@ -1370,7 +1370,7 @@ static int rose_get_info(char *buffer, char **start, off_t offset, int length)
 			s->protinfo.rose->idle / (60 * HZ),
 			atomic_read(&s->wmem_alloc),
 			atomic_read(&s->rmem_alloc),
-			s->socket != NULL ? s->socket->inode->i_ino : 0L);
+			s->socket != NULL ? SOCK_INODE(s->socket)->i_ino : 0L);
 
 		pos = begin + len;
 

net/socket.c

@@ -272,7 +272,47 @@ static int sockfs_statfs(struct super_block *sb, struct statfs *buf)
 	return 0;
 }
 
+static kmem_cache_t * sock_inode_cachep;
+
+static struct inode *sock_alloc_inode(struct super_block *sb)
+{
+	struct socket_alloc *ei;
+	ei = (struct socket_alloc *)kmem_cache_alloc(sock_inode_cachep, SLAB_KERNEL);
+	if (!ei)
+		return NULL;
+	init_waitqueue_head(&ei->socket.wait);
+	return &ei->vfs_inode;
+}
+
+static void sock_destroy_inode(struct inode *inode)
+{
+	kmem_cache_free(sock_inode_cachep,
+			list_entry(inode, struct socket_alloc, vfs_inode));
+}
+
+static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+{
+	struct socket_alloc *ei = (struct socket_alloc *) foo;
+
+	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
+	    SLAB_CTOR_CONSTRUCTOR)
+		inode_init_once(&ei->vfs_inode);
+}
+ 
+static int init_inodecache(void)
+{
+	sock_inode_cachep = kmem_cache_create("sock_inode_cache",
+					     sizeof(struct socket_alloc),
+					     0, SLAB_HWCACHE_ALIGN,
+					     init_once, NULL);
+	if (sock_inode_cachep == NULL)
+		return -ENOMEM;
+	return 0;
+}
+
 static struct super_operations sockfs_ops = {
+	alloc_inode:	sock_alloc_inode,
+	destroy_inode:	sock_destroy_inode,
 	statfs:		sockfs_statfs,
 };
 
@@ -347,10 +387,10 @@ static int sock_map_fd(struct socket *sock)
 			goto out;
 		}
 
-		sprintf(name, "[%lu]", sock->inode->i_ino);
+		sprintf(name, "[%lu]", SOCK_INODE(sock)->i_ino);
 		this.name = name;
 		this.len = strlen(name);
-		this.hash = sock->inode->i_ino;
+		this.hash = SOCK_INODE(sock)->i_ino;
 
 		file->f_dentry = d_alloc(sock_mnt->mnt_sb->s_root, &this);
 		if (!file->f_dentry) {
@@ -360,11 +400,11 @@ static int sock_map_fd(struct socket *sock)
 			goto out;
 		}
 		file->f_dentry->d_op = &sockfs_dentry_operations;
-		d_add(file->f_dentry, sock->inode);
+		d_add(file->f_dentry, SOCK_INODE(sock));
 		file->f_vfsmnt = mntget(sock_mnt);
 
 		sock->file = file;
-		file->f_op = sock->inode->i_fop = &socket_file_ops;
+		file->f_op = SOCK_INODE(sock)->i_fop = &socket_file_ops;
 		file->f_mode = 3;
 		file->f_flags = O_RDWR;
 		file->f_pos = 0;
@@ -375,11 +415,6 @@ static int sock_map_fd(struct socket *sock)
 	return fd;
 }
 
-extern __inline__ struct socket *socki_lookup(struct inode *inode)
-{
-	return &inode->u.socket_i;
-}
-
 /**
  *	sockfd_lookup	- 	Go from a file number to its socket slot
  *	@fd: file handle
@@ -406,7 +441,7 @@ struct socket *sockfd_lookup(int fd, int *err)
 	}
 
 	inode = file->f_dentry->d_inode;
-	if (!inode->i_sock || !(sock = socki_lookup(inode)))
+	if (!inode->i_sock || !(sock = SOCKET_I(inode)))
 	{
 		*err = -ENOTSOCK;
 		fput(file);
@@ -443,15 +478,13 @@ struct socket *sock_alloc(void)
 		return NULL;
 
 	inode->i_dev = NODEV;
-	sock = socki_lookup(inode);
+	sock = SOCKET_I(inode);
 
 	inode->i_mode = S_IFSOCK|S_IRWXUGO;
 	inode->i_sock = 1;
 	inode->i_uid = current->fsuid;
 	inode->i_gid = current->fsgid;
 
-	sock->inode = inode;
-	init_waitqueue_head(&sock->wait);
 	sock->fasync_list = NULL;
 	sock->state = SS_UNCONNECTED;
 	sock->flags = 0;
@@ -493,7 +526,7 @@ void sock_release(struct socket *sock)
 
 	sockets_in_use[smp_processor_id()].counter--;
 	if (!sock->file) {
-		iput(sock->inode);
+		iput(SOCK_INODE(sock));
 		return;
 	}
 	sock->file=NULL;
@@ -553,7 +586,7 @@ static ssize_t sock_read(struct file *file, char *ubuf,
 	if (size==0)		/* Match SYS5 behaviour */
 		return 0;
 
-	sock = socki_lookup(file->f_dentry->d_inode); 
+	sock = SOCKET_I(file->f_dentry->d_inode); 
 
 	msg.msg_name=NULL;
 	msg.msg_namelen=0;
@@ -586,7 +619,7 @@ static ssize_t sock_write(struct file *file, const char *ubuf,
 	if(size==0)		/* Match SYS5 behaviour */
 		return 0;
 
-	sock = socki_lookup(file->f_dentry->d_inode); 
+	sock = SOCKET_I(file->f_dentry->d_inode); 
 
 	msg.msg_name=NULL;
 	msg.msg_namelen=0;
@@ -612,7 +645,7 @@ ssize_t sock_sendpage(struct file *file, struct page *page,
 	if (ppos != &file->f_pos)
 		return -ESPIPE;
 
-	sock = socki_lookup(file->f_dentry->d_inode);
+	sock = SOCKET_I(file->f_dentry->d_inode);
 
 	flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
 	if (more)
@@ -627,7 +660,7 @@ int sock_readv_writev(int type, struct inode * inode, struct file * file,
 	struct msghdr msg;
 	struct socket *sock;
 
-	sock = socki_lookup(inode);
+	sock = SOCKET_I(inode);
 
 	msg.msg_name = NULL;
 	msg.msg_namelen = 0;
@@ -681,7 +714,7 @@ int sock_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 	int err;
 
 	unlock_kernel();
-	sock = socki_lookup(inode);
+	sock = SOCKET_I(inode);
 	err = sock->ops->ioctl(sock, cmd, arg);
 	lock_kernel();
 
@@ -697,13 +730,13 @@ static unsigned int sock_poll(struct file *file, poll_table * wait)
 	/*
 	 *	We can't return errors to poll, so it's either yes or no. 
 	 */
-	sock = socki_lookup(file->f_dentry->d_inode);
+	sock = SOCKET_I(file->f_dentry->d_inode);
 	return sock->ops->poll(file, sock, wait);
 }
 
 static int sock_mmap(struct file * file, struct vm_area_struct * vma)
 {
-	struct socket *sock = socki_lookup(file->f_dentry->d_inode);
+	struct socket *sock = SOCKET_I(file->f_dentry->d_inode);
 
 	return sock->ops->mmap(file, sock, vma);
 }
@@ -721,7 +754,7 @@ int sock_close(struct inode *inode, struct file *filp)
 		return 0;
 	}
 	sock_fasync(-1, filp, 0);
-	sock_release(socki_lookup(inode));
+	sock_release(SOCKET_I(inode));
 	return 0;
 }
 
@@ -754,7 +787,7 @@ static int sock_fasync(int fd, struct file *filp, int on)
 	}
 
 
-	sock = socki_lookup(filp->f_dentry->d_inode);
+	sock = SOCKET_I(filp->f_dentry->d_inode);
 	
 	if ((sk=sock->sk) == NULL)
 		return -EINVAL;
@@ -1521,7 +1554,7 @@ int sock_fcntl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	struct socket *sock;
 
-	sock = socki_lookup (filp->f_dentry->d_inode);
+	sock = SOCKET_I (filp->f_dentry->d_inode);
 	if (sock && sock->ops)
 		return sock_no_fcntl(sock, cmd, arg);
 	return(-EINVAL);
@@ -1711,6 +1744,7 @@ void __init sock_init(void)
 	 *	Initialize the protocols module. 
 	 */
 
+	init_inodecache();
 	register_filesystem(&sock_fs_type);
 	sock_mnt = kern_mount(&sock_fs_type);
 	/* The real protocol initialization is performed when

net/unix/af_unix.c

@@ -711,7 +711,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 		/*
 		 * All right, let's create it.
 		 */
-		mode = S_IFSOCK | (sock->inode->i_mode & ~current->fs->umask);
+		mode = S_IFSOCK | (SOCK_INODE(sock)->i_mode & ~current->fs->umask);
 		err = vfs_mknod(nd.dentry->d_inode, dentry, mode, 0);
 		if (err)
 			goto out_mknod_dput;

net/unix/garbage.c

@@ -101,7 +101,7 @@ extern inline unix_socket *unix_get_socket(struct file *filp)
 	 *	Socket ?
 	 */
 	if (inode->i_sock) {
-		struct socket * sock = &inode->u.socket_i;
+		struct socket * sock = SOCKET_I(inode);
 		struct sock * s = sock->sk;
 
 		/*

net/x25/af_x25.c

@@ -1239,7 +1239,7 @@ static int x25_get_info(char *buffer, char **start, off_t offset, int length)
 			s->protinfo.x25->t23 / HZ,
 			atomic_read(&s->wmem_alloc),
 			atomic_read(&s->rmem_alloc),
-			s->socket != NULL ? s->socket->inode->i_ino : 0L);
+			s->socket != NULL ? SOCK_INODE(s->socket)->i_ino : 0L);
 
 		pos = begin + len;