ext4: Add debugging markers that can be used by systemtap

[linux-2.6-omap-h63xx.git] / fs / ext4 / fsync.c

diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index a45c3737ad31e69e9de6c98075ff98fabe3b0770..5afe4370840b2b0b7c683a7d738baf648eae533b 100644 (file)
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -28,6 +28,7 @@
 #include <linux/writeback.h>
 #include <linux/jbd2.h>
 #include <linux/blkdev.h>
+#include <linux/marker.h>
 #include "ext4.h"
 #include "ext4_jbd2.h"
 
@@ -43,7 +44,7 @@
  * inode to disk.
  */
 
-int ext4_sync_file(struct file * file, struct dentry *dentry, int datasync)
+int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync)
 {
        struct inode *inode = dentry->d_inode;
        journal_t *journal = EXT4_SB(inode->i_sb)->s_journal;
@@ -51,6 +52,10 @@ int ext4_sync_file(struct file * file, struct dentry *dentry, int datasync)
 
        J_ASSERT(ext4_journal_current_handle() == NULL);
 
+       trace_mark(ext4_sync_file, "dev %s datasync %d ino %ld parent %ld",
+                  inode->i_sb->s_id, datasync, inode->i_ino,
+                  dentry->d_parent->d_inode->i_ino);
+
        /*
         * data=writeback:
         *  The caller's filemap_fdatawrite()/wait will sync the data.