rtc: push the BKL down into the driver ioctl method

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

diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 8d50879d1c2c68f23284314ff4fc7c5afe3c0a8e..a45c3737ad31e69e9de6c98075ff98fabe3b0770 100644 (file)
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -27,8 +27,9 @@
 #include <linux/sched.h>
 #include <linux/writeback.h>
 #include <linux/jbd2.h>
-#include <linux/ext4_fs.h>
-#include <linux/ext4_jbd2.h>
+#include <linux/blkdev.h>
+#include "ext4.h"
+#include "ext4_jbd2.h"
 
 /*
  * akpm: A new design for ext4_sync_file().
@@ -45,6 +46,7 @@
 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;
        int ret = 0;
 
        J_ASSERT(ext4_journal_current_handle() == NULL);
@@ -72,6 +74,9 @@ int ext4_sync_file(struct file * file, struct dentry *dentry, int datasync)
                goto out;
        }
 
+       if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
+               goto out;
+
        /*
         * The VFS has written the file data.  If the inode is unaltered
         * then we need not start a commit.
@@ -82,6 +87,8 @@ int ext4_sync_file(struct file * file, struct dentry *dentry, int datasync)
                        .nr_to_write = 0, /* sys_fsync did this */
                };
                ret = sync_inode(inode, &wbc);
+               if (journal && (journal->j_flags & JBD2_BARRIER))
+                       blkdev_issue_flush(inode->i_sb->s_bdev, NULL);
        }
 out:
        return ret;