Merge with 2.4.0-test3-pre7.

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/pipe.c b/fs/pipe.c
index 0cd5f6b09..12c160a1a 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -366,12 +366,14 @@ pipe_write_open(struct inode *inode, struct file *filp)
 static int
 pipe_rdwr_open(struct inode *inode, struct file *filp)
 {
+	lock_kernel();
 	down(PIPE_SEM(*inode));
 	if (filp->f_mode & FMODE_READ)
 		PIPE_READERS(*inode)++;
 	if (filp->f_mode & FMODE_WRITE)
 		PIPE_WRITERS(*inode)++;
 	up(PIPE_SEM(*inode));
+	unlock_kernel();
 
 	return 0;
 }