Ejemplos de put_dvfs_file_struct en C++ (Cpp)

Ejemplo n.º 1

/** Check if we need to close a FAF server file.
 *  @author Renaud Lottiaux
 *
 *  @param file         The file to check.
 *
 *  We can close a FAF server file if local f_count == 1 and DVFS count == 1.
 *  This means the FAF server is the last process cluster wide using the file.
 */
void check_close_faf_srv_file(struct file *file)
{
	struct dvfs_file_struct *dvfs_file;
	unsigned long objid = file->f_objid;
	int close_file = 0;

	/* Pre-check the file count to avoid a useless call to get_dvfs */
	if (file_count (file) != 1)
		return;

	dvfs_file = get_dvfs_file_struct(objid);
	/* If dvfs file is NULL, someone else did the job before us */
	if (dvfs_file->file == NULL)
		goto done;
	BUG_ON (dvfs_file->file != file);

	/* Re-check f_count in case it changed during the get_dvfs */
	if ((dvfs_file->count == 1) && (file_count (file) == 1)) {
		/* The FAF server file is the last one used in the cluster.
		 * We can now close it.
		 */
		close_file = 1;
		dvfs_file->file = NULL;
	}

done:
	put_dvfs_file_struct (objid);

	if (close_file)
		close_faf_file(file);
}

Ejemplo n.º 2

int end_import_dvfs_file(unsigned long dvfs_objid,
			 struct dvfs_file_struct *dvfs_file,
			 struct file *file, int first_import)
{
	int r = 0;

	if (IS_ERR(file)) {
		r = PTR_ERR (file);
		goto error;
	}

	if (first_import) {
		/* This is the first time the file is imported on this node
		* Setup the DVFS file field and inc the DVFS counter.
		*/
		file->f_objid = dvfs_objid;
		dvfs_file->file = file;

		dvfs_file->count++;
	}

error:
	put_dvfs_file_struct(dvfs_objid);
	return r;
}