Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751478AbaKFV15 (ORCPT ); Thu, 6 Nov 2014 16:27:57 -0500 Received: from mx1.redhat.com ([209.132.183.28]:47142 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751141AbaKFV1w (ORCPT ); Thu, 6 Nov 2014 16:27:52 -0500 From: Aristeu Rozanski To: linux-kernel@vger.kernel.org Cc: Aristeu Rozanski , Jan Kara , Andrew Morton , Andreas Dilger , Paul Gortmaker , Josh Triplett Subject: [PATCH] lib/halfmd4: make build optional Date: Thu, 6 Nov 2014 16:27:33 -0500 Message-Id: <1415309253-13019-1-git-send-email-aris@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Aristeu Rozanski halfmd4 currently is built unconditionally: text data bss dec hex filename 801 176 8 985 3d9 lib/halfmd4.o 801 176 8 985 3d9 (TOTALS) and it's used by ext3 and ext4. This patch is useful for situations in which memory footprint is a concern and those filesystems aren't used. Cc: Jan Kara Cc: Andrew Morton Cc: Andreas Dilger Cc: Paul Gortmaker Cc: Josh Triplett Signed-off-by: Aristeu Rozanski --- fs/ext3/Kconfig | 1 + fs/ext4/Kconfig | 1 + lib/Kconfig | 7 +++++++ lib/Makefile | 3 ++- 4 files changed, 11 insertions(+), 1 deletion(-) diff --git a/fs/ext3/Kconfig b/fs/ext3/Kconfig index e8c6ba0..a6ab4e8 100644 --- a/fs/ext3/Kconfig +++ b/fs/ext3/Kconfig @@ -1,6 +1,7 @@ config EXT3_FS tristate "Ext3 journalling file system support" select JBD + select HALF_MD4 help This is the journalling version of the Second extended file system (often called ext3), the de facto standard Linux file system diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig index efea5d5..cbb56ee 100644 --- a/fs/ext4/Kconfig +++ b/fs/ext4/Kconfig @@ -4,6 +4,7 @@ config EXT4_FS select CRC16 select CRYPTO select CRYPTO_CRC32C + select HALF_MD4 help This is the next generation of the ext3 filesystem. diff --git a/lib/Kconfig b/lib/Kconfig index 675920b..108196c 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -180,6 +180,13 @@ config CRC8 when they need to do cyclic redundancy check according CRC8 algorithm. Module will be called crc8. +config HALF_MD4 + bool "Half MD4 transform" + default y + help + This option enables a reduced (32 bit output) version of MD4 + transform. + config AUDIT_GENERIC bool depends on AUDIT && !AUDIT_ARCH diff --git a/lib/Makefile b/lib/Makefile index 9c12cbc..53fd120 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -22,7 +22,7 @@ lib-$(CONFIG_SMP) += cpumask.o lib-y += kobject.o klist.o obj-y += lockref.o -obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \ +obj-y += bcd.o div64.o sort.o parser.o debug_locks.o random32.o \ bust_spinlocks.o hexdump.o kasprintf.o bitmap.o scatterlist.o \ gcd.o lcm.o list_sort.o uuid.o iovec.o clz_ctz.o \ bsearch.o find_last_bit.o find_next_bit.o llist.o memweight.o kfifo.o \ @@ -74,6 +74,7 @@ obj-$(CONFIG_CRC7) += crc7.o obj-$(CONFIG_LIBCRC32C) += libcrc32c.o obj-$(CONFIG_CRC8) += crc8.o obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o +obj-$(CONFIG_HALF_MD4) += halfmd4.o obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/ obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/ -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/