1 files changed, 51 insertions, 0 deletions

diff --git a/fs/ext2/fsync.c b/fs/ext2/fsync.c
new file mode 100644
index 000000000000..c9c2e5ffa48e
--- /dev/null
+++ b/fs/ext2/fsync.c
@@ -0,0 +1,51 @@
+/*
+ *  linux/fs/ext2/fsync.c
+ *
+ *  Copyright (C) 1993  Stephen Tweedie (sct@dcs.ed.ac.uk)
+ *  from
+ *  Copyright (C) 1992  Remy Card (card@masi.ibp.fr)
+ *                      Laboratoire MASI - Institut Blaise Pascal
+ *                      Universite Pierre et Marie Curie (Paris VI)
+ *  from
+ *  linux/fs/minix/truncate.c   Copyright (C) 1991, 1992  Linus Torvalds
+ * 
+ *  ext2fs fsync primitive
+ *
+ *  Big-endian to little-endian byte-swapping/bitmaps by
+ *        David S. Miller (davem@caip.rutgers.edu), 1995
+ * 
+ *  Removed unnecessary code duplication for little endian machines
+ *  and excessive __inline__s. 
+ *        Andi Kleen, 1997
+ *
+ * Major simplications and cleanup - we only need to do the metadata, because
+ * we can depend on generic_block_fdatasync() to sync the data blocks.
+ */
+
+#include "ext2.h"
+#include <linux/smp_lock.h>
+#include <linux/buffer_head.h>          /* for fsync_inode_buffers() */
+
+
+/*
+ *      File may be NULL when we are called. Perhaps we shouldn't
+ *      even pass file to fsync ?
+ */
+
+int ext2_sync_file(struct file *file, struct dentry *dentry, int datasync)
+{
+        struct inode *inode = dentry->d_inode;
+        int err;
+        int ret;
+
+        ret = sync_mapping_buffers(inode->i_mapping);
+        if (!(inode->i_state & I_DIRTY))
+                return ret;
+        if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
+                return ret;
+
+        err = ext2_sync_inode(inode);
+        if (ret == 0)
+                ret = err;
+        return ret;
+}