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

* 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:
  BKL: introduce CONFIG_BKL.
  dabusb: remove the BKL
  sunrpc: remove the big kernel lock
  init/main.c: remove BKL notations
  blktrace: remove the big kernel lock
  rtmutex-tester: make it build without BKL
  dvb-core: kill the big kernel lock
  dvb/bt8xx: kill the big kernel lock
  tlclk: remove big kernel lock
  fix rawctl compat ioctls breakage on amd64 and itanic
  uml: kill big kernel lock
  parisc: remove big kernel lock
  cris: autoconvert trivial BKL users
  alpha: kill big kernel lock
  isapnp: BKL removal
  s390/block: kill the big kernel lock
  hpet: kill BKL, add compat_ioctl

2 files changed, 11 insertions, 30 deletions

diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 2b06410e584e..29b11e065015 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -28,7 +28,6 @@
 #include <linux/workqueue.h>
 #include <linux/mutex.h>
 #include <linux/pagemap.h>
-#include <linux/smp_lock.h>
 #include <asm/ioctls.h>
 #include <linux/sunrpc/types.h>
 #include <linux/sunrpc/cache.h>
@@ -1348,15 +1347,10 @@ static unsigned int cache_poll_procfs(struct file *filp, poll_table *wait)
 static long cache_ioctl_procfs(struct file *filp,
 			       unsigned int cmd, unsigned long arg)
 {
-	long ret;
 	struct inode *inode = filp->f_path.dentry->d_inode;
 	struct cache_detail *cd = PDE(inode)->data;
 
-	lock_kernel();
-	ret = cache_ioctl(inode, filp, cmd, arg, cd);
-	unlock_kernel();
-
-	return ret;
+	return cache_ioctl(inode, filp, cmd, arg, cd);
 }
 
 static int cache_open_procfs(struct inode *inode, struct file *filp)
@@ -1555,13 +1549,8 @@ static long cache_ioctl_pipefs(struct file *filp,
 {
 	struct inode *inode = filp->f_dentry->d_inode;
 	struct cache_detail *cd = RPC_I(inode)->private;
-	long ret;
 
-	lock_kernel();
-	ret = cache_ioctl(inode, filp, cmd, arg, cd);
-	unlock_kernel();
-
-	return ret;
+	return cache_ioctl(inode, filp, cmd, arg, cd);
 }
 
 static int cache_open_pipefs(struct inode *inode, struct file *filp)
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 8c8eef2b8f26..28bcd52e3ce9 100644
--- 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,