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

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / reiserfs / file.c

diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index bbf3100..c7156dc 100644 (file)
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -140,12 +140,18 @@ static void reiserfs_vfs_truncate_file(struct inode *inode)
  * be removed...
  */
 
-static int reiserfs_sync_file(struct file *filp, int datasync)
+static int reiserfs_sync_file(struct file *filp, loff_t start, loff_t end,
+                             int datasync)
 {
        struct inode *inode = filp->f_mapping->host;
        int err;
        int barrier_done;
 
+       err = filemap_write_and_wait_range(inode->i_mapping, start, end);
+       if (err)
+               return err;
+
+       mutex_lock(&inode->i_mutex);
        BUG_ON(!S_ISREG(inode->i_mode));
        err = sync_mapping_buffers(inode->i_mapping);
        reiserfs_write_lock(inode->i_sb);
@@ -153,6 +159,7 @@ static int reiserfs_sync_file(struct file *filp, int datasync)
        reiserfs_write_unlock(inode->i_sb);
        if (barrier_done != 1 && reiserfs_barrier_flush(inode->i_sb))
                blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
+       mutex_unlock(&inode->i_mutex);
        if (barrier_done < 0)
                return barrier_done;
        return (err < 0) ? -EIO : 0;