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[PATCH] Make EXT2_DEBUG work again

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This patch makes EXT2_DEBUG work again.  Due to lack of proper include
file, EXT2_DEBUG was undefined in bitmap.c and ext2_count_free() is left
out.  Moved to balloc.c and removed bitmap.c entirely.

Second, debug versions of ext2_count_free_{inodes/blocks} reacquires
superblock lock.  Moved lock into callers.

Signed-off-by: Val Henson <val_henson@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Valerie Henson 2006-06-25 05:48:12 -07:00 committed by Linus Torvalds
parent 42225a359a
commit 21730eed11
5 changed files with 24 additions and 37 deletions
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2
fs/ext2/Makefile
View File

@ -4,7 +4,7 @@
obj-$(CONFIG_EXT2_FS) += ext2.o
ext2-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
ext2-y := balloc.o dir.o file.o fsync.o ialloc.o inode.o \
ioctl.o namei.o super.o symlink.o
ext2-$(CONFIG_EXT2_FS_XATTR) += xattr.o xattr_user.o xattr_trusted.o

22
fs/ext2/balloc.c
View File

@ -521,6 +521,26 @@ io_error:
goto out_release;
}
#ifdef EXT2FS_DEBUG
static int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
unsigned long ext2_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 /* EXT2FS_DEBUG */
/* Superblock must be locked */
unsigned long ext2_count_free_blocks (struct super_block * sb)
{
struct ext2_group_desc * desc;
@ -530,7 +550,6 @@ unsigned long ext2_count_free_blocks (struct super_block * sb)
unsigned long bitmap_count, x;
struct ext2_super_block *es;
lock_super (sb);
es = EXT2_SB(sb)->s_es;
desc_count = 0;
bitmap_count = 0;
@ -554,7 +573,6 @@ unsigned long ext2_count_free_blocks (struct super_block * sb)
printk("ext2_count_free_blocks: stored = %lu, computed = %lu, %lu\n",
(long)le32_to_cpu(es->s_free_blocks_count),
desc_count, bitmap_count);
unlock_super (sb);
return bitmap_count;
#else
for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {

32
fs/ext2/bitmap.c
View File

@ -1,32 +0,0 @@
/*
* linux/fs/ext2/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 EXT2FS_DEBUG
#include <linux/buffer_head.h>
#include "ext2.h"
static int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
unsigned long ext2_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 /* EXT2FS_DEBUG */

3
fs/ext2/ialloc.c
View File

@ -638,6 +638,7 @@ fail:
return ERR_PTR(err);
}
/* Superblock must be locked */
unsigned long ext2_count_free_inodes (struct super_block * sb)
{
struct ext2_group_desc *desc;
@ -649,7 +650,6 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
unsigned long bitmap_count = 0;
struct buffer_head *bitmap_bh = NULL;
lock_super (sb);
es = EXT2_SB(sb)->s_es;
for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {
unsigned x;
@ -672,7 +672,6 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
printk("ext2_count_free_inodes: stored = %lu, computed = %lu, %lu\n",
percpu_counter_read(&EXT2_SB(sb)->s_freeinodes_counter),
desc_count, bitmap_count);
unlock_super(sb);
return desc_count;
#else
for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) {

2
fs/ext2/super.c
View File

@ -1045,6 +1045,7 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
unsigned long overhead;
int i;
lock_super(sb);
if (test_opt (sb, MINIX_DF))
overhead = 0;
else {
@ -1085,6 +1086,7 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
buf->f_files = le32_to_cpu(sbi->s_es->s_inodes_count);
buf->f_ffree = ext2_count_free_inodes (sb);
buf->f_namelen = EXT2_NAME_LEN;
unlock_super(sb);
return 0;
}