fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / ntfs / dir.c

diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c
index 0f48e7c..99e3610 100644 (file)
--- a/fs/ntfs/dir.c
+++ b/fs/ntfs/dir.c
@@ -1527,13 +1527,20 @@ static int ntfs_dir_open(struct inode *vi, struct file *filp)
  * this problem for now.  We do write the $BITMAP attribute if it is present
  * which is the important one for a directory so things are not too bad.
  */
-static int ntfs_dir_fsync(struct file *filp, int datasync)
+static int ntfs_dir_fsync(struct file *filp, loff_t start, loff_t end,
+                         int datasync)
 {
        struct inode *bmp_vi, *vi = filp->f_mapping->host;
        int err, ret;
        ntfs_attr na;
 
        ntfs_debug("Entering for inode 0x%lx.", vi->i_ino);
+
+       err = filemap_write_and_wait_range(vi->i_mapping, start, end);
+       if (err)
+               return err;
+       mutex_lock(&vi->i_mutex);
+
        BUG_ON(!S_ISDIR(vi->i_mode));
        /* If the bitmap attribute inode is in memory sync it, too. */
        na.mft_no = vi->i_ino;
@@ -1555,6 +1562,7 @@ static int ntfs_dir_fsync(struct file *filp, int datasync)
        else
                ntfs_warning(vi->i_sb, "Failed to f%ssync inode 0x%lx.  Error "
                                "%u.", datasync ? "data" : "", vi->i_ino, -ret);
+       mutex_unlock(&vi->i_mutex);
        return ret;
 }