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From: zkabelac@sourceware.org
To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org
Subject: LVM2 ./WHATS_NEW lib/misc/crc.c
Date: Tue, 08 Feb 2011 12:41:00 -0000 [thread overview]
Message-ID: <20110208124109.12853.qmail@sourceware.org> (raw)
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: zkabelac@sourceware.org 2011-02-08 12:41:08
Modified files:
. : WHATS_NEW
lib/misc : crc.c
Log message:
Fix CRC32 calculation on big endian CPU
Fix regresion from 2.02.75 speedup - so currently crc32 is a little bit
more complicated on big-endian CPU as the uint32_t needs to be shifted
on here.
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/WHATS_NEW.diff?cvsroot=lvm2&r1=1.1908&r2=1.1909
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/misc/crc.c.diff?cvsroot=lvm2&r1=1.9&r2=1.10
--- LVM2/WHATS_NEW 2011/02/04 22:46:18 1.1908
+++ LVM2/WHATS_NEW 2011/02/08 12:41:08 1.1909
@@ -1,5 +1,6 @@
Version 2.02.84 -
===================================
+ Fix CRC32 calculation on big endian CPU (2.02.75).
Version 2.02.83 - 4th February 2011
===================================
--- LVM2/lib/misc/crc.c 2010/10/25 13:36:09 1.9
+++ LVM2/lib/misc/crc.c 2011/02/08 12:41:08 1.10
@@ -16,6 +16,7 @@
#include "lib.h"
#include "crc.h"
+#include "xlate.h"
/* Calculate an endian-independent CRC of supplied buffer */
#ifndef DEBUG_CRC32
@@ -65,7 +66,7 @@
/* Process 4 bytes per iteration */
while (start < end) {
- crc = crc ^ *start++;
+ crc = crc ^ xlate32(*start++);
crc = crctab[crc & 0xff] ^ crc >> 8;
crc = crctab[crc & 0xff] ^ crc >> 8;
crc = crctab[crc & 0xff] ^ crc >> 8;
reply other threads:[~2011-02-08 12:41 UTC|newest]
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