2003-02-06 22:42:13

by Matthew Dobson

[permalink] [raw]
Subject: [patch] Broken CLEAR_BITMAP() macro

diff -Nur --exclude-from=/usr/src/.dontdiff linux-2.5.59-vanilla/include/linux/types.h linux-2.5.59-bitmap_fix/include/linux/types.h
--- linux-2.5.59-vanilla/include/linux/types.h Thu Jan 16 18:22:41 2003
+++ linux-2.5.59-bitmap_fix/include/linux/types.h Thu Feb 6 13:51:23 2003
@@ -4,10 +4,12 @@
#ifdef __KERNEL__
#include <linux/config.h>

+#define BITS_TO_LONGS(bits) \
+ (((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
#define DECLARE_BITMAP(name,bits) \
- unsigned long name[((bits)+BITS_PER_LONG-1)/BITS_PER_LONG]
+ unsigned long name[BITS_TO_LONGS(bits)]
#define CLEAR_BITMAP(name,bits) \
- memset(name, 0, ((bits)+BITS_PER_LONG-1)/8)
+ memset(name, 0, BITS_TO_LONGS(bits)*sizeof(unsigned long))
#endif

#include <linux/posix_types.h>


Attachments:
clear_bitmap_fix-2.5.59.patch (744.00 B)