From: Joonsoo Kim Subject: [PATCH 1/2] crypto: export crypto_alg_list and rwsem Date: Thu, 13 Aug 2015 11:24:13 +0900 Message-ID: <1439432654-23322-1-git-send-email-iamjoonsoo.kim@lge.com> Cc: Minchan Kim , Nitin Gupta , Sergey Senozhatsky , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, Herbert Xu , "David S. Miller" , Stephan Mueller , Joonsoo Kim To: Andrew Morton Return-path: Received: from mail-pa0-f47.google.com ([209.85.220.47]:35848 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751940AbbHMCYd (ORCPT ); Wed, 12 Aug 2015 22:24:33 -0400 Sender: linux-crypto-owner@vger.kernel.org List-ID: Until now, zram uses compression algorithm through direct call to core algorithm function, but, it has drawback that we need to add compression algorithm manually to zram. If we don't do that, we cannot utilize various compression algorithms in the system. To improve this situation, zram will be changed to use crypto subsystem in following patch. There is one problem with this change. Zram has a interface that what compression algorithm it can support. Although crypto subsystem has /proc interface to search all of crypto algorithm, but, there is no way to get just compression algorithm in cryto subsystem. To implement it on zram-side, crypto_alg_list and rwsem should be exported so this patch do it. Signed-off-by: Joonsoo Kim --- crypto/internal.h | 2 -- include/linux/crypto.h | 4 ++++ 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/crypto/internal.h b/crypto/internal.h index 00e42a3..806f17a 100644 --- a/crypto/internal.h +++ b/crypto/internal.h @@ -45,8 +45,6 @@ struct crypto_larval { u32 mask; }; -extern struct list_head crypto_alg_list; -extern struct rw_semaphore crypto_alg_sem; extern struct blocking_notifier_head crypto_chain; #ifdef CONFIG_PROC_FS diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 81ef938..ab39f4b 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -24,6 +24,10 @@ #include #include #include +#include + +extern struct list_head crypto_alg_list; +extern struct rw_semaphore crypto_alg_sem; /* * Autoloaded crypto modules should only use a prefixed name to avoid allowing -- 1.9.1