From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Monakhov Subject: [PATCH 2/4] ioengine: allow several external ioengines Date: Wed, 19 Sep 2012 23:22:54 +0400 Message-ID: <1348082576-10528-3-git-send-email-dmonakhov@openvz.org> References: <1348082576-10528-1-git-send-email-dmonakhov@openvz.org> Cc: axboe@kernel.dk, Dmitry Monakhov To: linux-ext4@vger.kernel.org, fio@vger.kernel.org Return-path: Received: from mail-lb0-f174.google.com ([209.85.217.174]:61269 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750728Ab2ISTXE (ORCPT ); Wed, 19 Sep 2012 15:23:04 -0400 In-Reply-To: <1348082576-10528-1-git-send-email-dmonakhov@openvz.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: Currently only one external ioengine can be exported because it use hardcoded 'ioengine' symbol, but if we allow external modules to have ops symbol similar to it's name then several extrnal engines become possible. NOTE: Old linking layout preserved Signed-off-by: Dmitry Monakhov --- ioengines.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/ioengines.c b/ioengines.c index b43374e..c2a64cb 100644 --- a/ioengines.c +++ b/ioengines.c @@ -104,7 +104,9 @@ static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, * Unlike the included modules, external engines should have a * non-static ioengine structure that we can reference. */ - ops = dlsym(dlhandle, "ioengine"); + ops = dlsym(dlhandle, engine_lib); + if (!ops) + ops = dlsym(dlhandle, "ioengine"); if (!ops) { td_vmsg(td, -1, dlerror(), "dlsym"); dlclose(dlhandle); -- 1.7.7.6