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

[linux-2.6-block.git] / drivers / video / fb_defio.c

diff --git a/drivers/video/fb_defio.c b/drivers/video/fb_defio.c
index 804000183c5e8900e69aa6c1748efa106e312690..32814e8800e034ccb073024a0959f5764ced7d86 100644 (file)
--- a/drivers/video/fb_defio.c
+++ b/drivers/video/fb_defio.c
@@ -66,19 +66,26 @@ static int fb_deferred_io_fault(struct vm_area_struct *vma,
        return 0;
 }
 
-int fb_deferred_io_fsync(struct file *file, int datasync)
+int fb_deferred_io_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
        struct fb_info *info = file->private_data;
+       struct inode *inode = file->f_path.dentry->d_inode;
+       int err = filemap_write_and_wait_range(inode->i_mapping, start, end);
+       if (err)
+               return err;
 
        /* Skip if deferred io is compiled-in but disabled on this fbdev */
        if (!info->fbdefio)
                return 0;
 
+       mutex_lock(&inode->i_mutex);
        /* Kill off the delayed work */
        cancel_delayed_work_sync(&info->deferred_work);
 
        /* Run it immediately */
-       return schedule_delayed_work(&info->deferred_work, 0);
+       err = schedule_delayed_work(&info->deferred_work, 0);
+       mutex_unlock(&inode->i_mutex);
+       return err;
 }
 EXPORT_SYMBOL_GPL(fb_deferred_io_fsync);