linux-kernel - Correction to LZO1X

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Message-ID: <4cefeab80707110553l4fbe2270ndc98e5c125c786f6@mail.gmail.com>
Date:	Wed, 11 Jul 2007 18:23:38 +0530
From:	"Nitin Gupta" <nitingupta910@...il.com>
To:	akpm <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org,
	"Markus F.X.J. Oberhumer" <markus@...rhumer.com>,
	"Richard Purdie" <rpurdie@...nedhand.com>
Subject: Correction to LZO1X

Hi,

This is correction for macro that gives worst case compressed data
size by LZO1X.


This patch was provided by the LZO author (Markus Oberhumer).

Signed-off-by: Nitin Gupta <nitingupta910@...il.com>
---

diff --git a/include/linux/lzo.h b/include/linux/lzo.h
index 582d8b7..d793497 100644
--- a/include/linux/lzo.h
+++ b/include/linux/lzo.h
@@ -17,7 +17,7 @@
 #define LZO1X_MEM_COMPRESS     (16384 * sizeof(unsigned char *))
 #define LZO1X_1_MEM_COMPRESS   LZO1X_MEM_COMPRESS

-#define lzo1x_worst_compress(x) (x + (x / 64) + 16 + 3)
+#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3)

 /* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */
 int lzo1x_1_compress(const unsigned char *src, size_t src_len,
-
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