linux/fs/ext3/bitmap.c

/*
 *  linux/fs/ext3/bitmap.c
 *
 * Copyright (C) 1992, 1993, 1994, 1995
 * Remy Card (card@masi.ibp.fr)
 * Laboratoire MASI - Institut Blaise Pascal
 * Universite Pierre et Marie Curie (Paris VI)
 */

#ifdef EXT3FS_DEBUG

#include <linux/buffer_head.h>

#include "ext3_fs.h"

static int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};

unsigned long ext3_count_free (struct buffer_head * map, unsigned int numchars)
{
	unsigned int i;
	unsigned long sum = 0;

	if (!map) 
		return (0);
	for (i = 0; i < numchars; i++)
		sum += nibblemap[map->b_data[i] & 0xf] +
			nibblemap[(map->b_data[i] >> 4) & 0xf];
	return (sum);
}

#endif  /*  EXT3FS_DEBUG  */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00			`/*`
			`* linux/fs/ext3/bitmap.c`
			`*`
			`* Copyright (C) 1992, 1993, 1994, 1995`
			`* Remy Card (card@masi.ibp.fr)`
			`* Laboratoire MASI - Institut Blaise Pascal`
			`* Universite Pierre et Marie Curie (Paris VI)`
			`*/`

[PATCH] fs/ext3/: small cleanups This patch contains the following cleanups: - there's no need for ext3_count_free() #ifndef EXT3FS_DEBUG - having prototypes for ext3_count_free() in two different headers is nonsense Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 2006-01-10 04:54:06 +00:00			`#ifdef EXT3FS_DEBUG`

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00			`#include <linux/buffer_head.h>`
[PATCH] fs/ext3/: small cleanups This patch contains the following cleanups: - there's no need for ext3_count_free() #ifndef EXT3FS_DEBUG - having prototypes for ext3_count_free() in two different headers is nonsense Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 2006-01-10 04:54:06 +00:00
			`#include "ext3_fs.h"`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00
			`static int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};`

			`unsigned long ext3_count_free (struct buffer_head * map, unsigned int numchars)`
			`{`
			`unsigned int i;`
			`unsigned long sum = 0;`

			`if (!map)`
			`return (0);`
			`for (i = 0; i < numchars; i++)`
			`sum += nibblemap[map->b_data[i] & 0xf] +`
			`nibblemap[(map->b_data[i] >> 4) & 0xf];`
			`return (sum);`
			`}`
[PATCH] fs/ext3/: small cleanups This patch contains the following cleanups: - there's no need for ext3_count_free() #ifndef EXT3FS_DEBUG - having prototypes for ext3_count_free() in two different headers is nonsense Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 2006-01-10 04:54:06 +00:00
			`#endif /* EXT3FS_DEBUG */`