linux-master/fs/locks.c

1076 	struct file_lock *new_fl = NULL;
1091 		new_fl = locks_alloc_lock();
1092 		if (!new_fl)
1130 	locks_copy_lock(new_fl, request);
1131 	locks_move_blocks(new_fl, request);
1132 	locks_insert_lock_ctx(&new_fl->c, &ctx->flc_flock);
1133 	new_fl = NULL;
1139 	if (new_fl)
1140 		locks_free_lock(new_fl);
1150 	struct file_lock *new_fl = NULL;
1174 		new_fl = locks_alloc_lock();
1304 				 * Replace the old lock with new_fl, and
1307 				 * using new_fl later, and that the lock is
1311 				if (!new_fl)
1313 				locks_copy_lock(new_fl, request);
1314 				locks_move_blocks(new_fl, request);
1315 				request = new_fl;
1316 				new_fl = NULL;
1342 		if (!new_fl) {
1346 		locks_copy_lock(new_fl, request);
1347 		locks_move_blocks(new_fl, request);
1348 		locks_insert_lock_ctx(&new_fl->c, &fl->c.flc_list);
1349 		fl = new_fl;
1350 		new_fl = NULL;
1376 	if (new_fl)
1377 		locks_free_lock(new_fl);
1546 	struct file_lease *new_fl, *fl, *tmp;
1551 	new_fl = lease_alloc(NULL, want_write ? F_WRLCK : F_RDLCK);
1552 	if (IS_ERR(new_fl))
1553 		return PTR_ERR(new_fl);
1554 	new_fl->c.flc_flags = type;
1568 	if (!any_leases_conflict(inode, new_fl))
1579 		if (!leases_conflict(&fl->c, &new_fl->c))
1600 		trace_break_lease_noblock(inode, new_fl);
1612 	locks_insert_block(&fl->c, &new_fl->c, leases_conflict);
1613 	trace_break_lease_block(inode, new_fl);
1618 	error = wait_event_interruptible_timeout(new_fl->c.flc_wait,
1619 						 list_empty(&new_fl->c.flc_blocked_member),
1624 	trace_break_lease_unblock(inode, new_fl);
1625 	__locks_delete_block(&new_fl->c);
1633 		if (any_leases_conflict(inode, new_fl))
1642 	locks_free_lease(new_fl);