Merge commit 'c039c332f23e794deb6d6f37b9f07ff3b27fb2cf' into md

Pull in pre-requisites for adding raid10 support to dm-raid.

1 files changed, 4 insertions, 5 deletions

diff --git a/fs/fifo.c b/fs/fifo.c
index b1a524d798e7..cf6f4345ceb0 100644
--- a/fs/fifo.c
+++ b/fs/fifo.c
@@ -14,7 +14,7 @@
 #include <linux/sched.h>
 #include <linux/pipe_fs_i.h>
 
-static void wait_for_partner(struct inode* inode, unsigned int *cnt)
+static int wait_for_partner(struct inode* inode, unsigned int *cnt)
 {
         int cur = *cnt; 
 
@@ -23,6 +23,7 @@ static void wait_for_partner(struct inode* inode, unsigned int *cnt)
                 if (signal_pending(current))
                         break;
         }
+        return cur == *cnt ? -ERESTARTSYS : 0;
 }
 
 static void wake_up_partner(struct inode* inode)
@@ -67,8 +68,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
                                  * seen a writer */
                                 filp->f_version = pipe->w_counter;
                         } else {
-                                wait_for_partner(inode, &pipe->w_counter);
-                                if(signal_pending(current))
+                                if (wait_for_partner(inode, &pipe->w_counter))
                                         goto err_rd;
                         }
                 }
@@ -90,8 +90,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
                         wake_up_partner(inode);
 
                 if (!pipe->readers) {
-                        wait_for_partner(inode, &pipe->r_counter);
-                        if (signal_pending(current))
+                        if (wait_for_partner(inode, &pipe->r_counter))
                                 goto err_wr;
                 }
                 break;