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

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / staging / pohmelfs / inode.c

diff --git a/drivers/staging/pohmelfs/inode.c b/drivers/staging/pohmelfs/inode.c
index c0f0ac7..f3c6060 100644 (file)
--- a/drivers/staging/pohmelfs/inode.c
+++ b/drivers/staging/pohmelfs/inode.c
@@ -887,11 +887,16 @@ static struct inode *pohmelfs_alloc_inode(struct super_block *sb)
 /*
  * We want fsync() to work on POHMELFS.
  */
-static int pohmelfs_fsync(struct file *file, int datasync)
+static int pohmelfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
        struct inode *inode = file->f_mapping->host;
-
-       return sync_inode_metadata(inode, 1);
+       int err = filemap_write_and_wait_range(inode->i_mapping, start, end);
+       if (!err) {
+               mutex_lock(&inode->i_mutex);
+               err = sync_inode_metadata(inode, 1);
+               mutex_unlock(&inode->i_mutex);
+       }
+       return err;
 }
 
 ssize_t pohmelfs_write(struct file *file, const char __user *buf,