[NET]: Use file->private_data to get socket pointer.

Avoid touching file->f_dentry on sockets, since file->private_data
directly gives us the socket pointer.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 13 insertions, 15 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index ba997095f08f..8690f171c1ef 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1535,8 +1535,7 @@ static unsigned int packet_poll(struct file * file, struct socket *sock,
 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 = SOCKET_I(inode);
+        struct socket * sock = file->private_data;
         struct sock *sk = sock->sk;
         
         if (sk)
@@ -1546,8 +1545,7 @@ static void packet_mm_open(struct vm_area_struct *vma)
 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 = SOCKET_I(inode);
+        struct socket * sock = file->private_data;
         struct sock *sk = sock->sk;
         
         if (sk)
diff --git a/net/socket.c b/net/socket.c
index 94fe638b4d72..e1bd5d84d7bf 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -667,7 +667,7 @@ static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf,
         }
         iocb->private = x;
         x->kiocb = iocb;
-        sock = SOCKET_I(iocb->ki_filp->f_dentry->d_inode); 
+        sock = iocb->ki_filp->private_data; 
 
         x->async_msg.msg_name = NULL;
         x->async_msg.msg_namelen = 0;
@@ -709,7 +709,7 @@ static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf,
         }
         iocb->private = x;
         x->kiocb = iocb;
-        sock = SOCKET_I(iocb->ki_filp->f_dentry->d_inode); 
+        sock = iocb->ki_filp->private_data; 
 
         x->async_msg.msg_name = NULL;
         x->async_msg.msg_namelen = 0;
@@ -732,7 +732,7 @@ static ssize_t sock_sendpage(struct file *file, struct page *page,
         struct socket *sock;
         int flags;
 
-        sock = SOCKET_I(file->f_dentry->d_inode);
+        sock = file->private_data;
 
         flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
         if (more)
@@ -741,14 +741,14 @@ static ssize_t sock_sendpage(struct file *file, struct page *page,
         return sock->ops->sendpage(sock, page, offset, size, flags);
 }
 
-static int sock_readv_writev(int type, struct inode * inode,
+static int sock_readv_writev(int type,
                              struct file * file, const struct iovec * iov,
                              long count, size_t size)
 {
         struct msghdr msg;
         struct socket *sock;
 
-        sock = SOCKET_I(inode);
+        sock = file->private_data;
 
         msg.msg_name = NULL;
         msg.msg_namelen = 0;
@@ -775,7 +775,7 @@ static ssize_t sock_readv(struct file *file, const struct iovec *vector,
         int i;
         for (i = 0 ; i < count ; i++)
                 tot_len += vector[i].iov_len;
-        return sock_readv_writev(VERIFY_WRITE, file->f_dentry->d_inode,
+        return sock_readv_writev(VERIFY_WRITE,
                                  file, vector, count, tot_len);
 }
         
@@ -786,7 +786,7 @@ static ssize_t sock_writev(struct file *file, const struct iovec *vector,
         int i;
         for (i = 0 ; i < count ; i++)
                 tot_len += vector[i].iov_len;
-        return sock_readv_writev(VERIFY_READ, file->f_dentry->d_inode,
+        return sock_readv_writev(VERIFY_READ,
                                  file, vector, count, tot_len);
 }
 
@@ -840,7 +840,7 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
         void __user *argp = (void __user *)arg;
         int pid, err;
 
-        sock = SOCKET_I(file->f_dentry->d_inode);
+        sock = file->private_data;
         if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
                 err = dev_ioctl(cmd, argp);
         } else
@@ -939,13 +939,13 @@ 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 = SOCKET_I(file->f_dentry->d_inode);
+        sock = file->private_data;
         return sock->ops->poll(file, sock, wait);
 }
 
 static int sock_mmap(struct file * file, struct vm_area_struct * vma)
 {
-        struct socket *sock = SOCKET_I(file->f_dentry->d_inode);
+        struct socket *sock = file->private_data;
 
         return sock->ops->mmap(file, sock, vma);
 }
@@ -995,7 +995,7 @@ static int sock_fasync(int fd, struct file *filp, int on)
                         return -ENOMEM;
         }
 
-        sock = SOCKET_I(filp->f_dentry->d_inode);
+        sock = filp->private_data;
 
         if ((sk=sock->sk) == NULL) {
                 kfree(fna);