Merge branch 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl

[pandora-kernel.git] / net / sunrpc / rpc_pipe.c

diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 8c8eef2..28bcd52 100644 (file)
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -27,7 +27,6 @@
 #include <linux/workqueue.h>
 #include <linux/sunrpc/rpc_pipe_fs.h>
 #include <linux/sunrpc/cache.h>
-#include <linux/smp_lock.h>
 
 static struct vfsmount *rpc_mount __read_mostly;
 static int rpc_mount_count;
@@ -309,40 +308,33 @@ rpc_pipe_poll(struct file *filp, struct poll_table_struct *wait)
        return mask;
 }
 
-static int
-rpc_pipe_ioctl_unlocked(struct file *filp, unsigned int cmd, unsigned long arg)
+static long
+rpc_pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
-       struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
+       struct inode *inode = filp->f_path.dentry->d_inode;
+       struct rpc_inode *rpci = RPC_I(inode);
        int len;
 
        switch (cmd) {
        case FIONREAD:
-               if (rpci->ops == NULL)
+               spin_lock(&inode->i_lock);
+               if (rpci->ops == NULL) {
+                       spin_unlock(&inode->i_lock);
                        return -EPIPE;
+               }
                len = rpci->pipelen;
                if (filp->private_data) {
                        struct rpc_pipe_msg *msg;
                        msg = (struct rpc_pipe_msg *)filp->private_data;
                        len += msg->len - msg->copied;
                }
+               spin_unlock(&inode->i_lock);
                return put_user(len, (int __user *)arg);
        default:
                return -EINVAL;
        }
 }
 
-static long
-rpc_pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-       long ret;
-
-       lock_kernel();
-       ret = rpc_pipe_ioctl_unlocked(filp, cmd, arg);
-       unlock_kernel();
-
-       return ret;
-}
-
 static const struct file_operations rpc_pipe_fops = {
        .owner          = THIS_MODULE,
        .llseek         = no_llseek,