ocfs2: cond_resched() in ocfs2_zero_extend()

The loop within ocfs2_zero_extend() can execute for a long time, causing
spurious soft lockup warnings.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index b499c329257b..1be74c4e7814 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -30,6 +30,7 @@
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
 #include <linux/uio.h>
+#include <linux/sched.h>
 
 #define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
@@ -691,6 +692,12 @@ static int ocfs2_zero_extend(struct inode *inode,
                 }
 
                 start_off += sb->s_blocksize;
+
+                /*
+                 * Very large extends have the potential to lock up
+                 * the cpu for extended periods of time.
+                 */
+                cond_resched();
         }
 
 out: