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Date: Tue, 02 Oct 2007 17:33:04 -0700
From: Avantika Mathur <mathur@...ux.vnet.ibm.com>
To: linux-ext4@...r.kernel.org
Subject: [PATCH, RFC 1/3] ext4_grpnum_t: Add new type
Ext4: add new type ext4_grpnum_t, and change all group variables to this type.
from: mathur@...ibm.com
In many places variables for block group are of type int, which limits the
maximum filesystem size. This patch introduces a new type
ext4_grpnum_t, of type unsigned long, to represent block group numbers in ext4.
All occurrences of block group variables are converted to type ext4_grpnum_t.
Signed-off-by: Avantika Mathur <mathur@...ibm.com>
---
fs/ext4/balloc.c | 61 +++++++++++++++++++++++----------------------
fs/ext4/group.h | 8 +++--
fs/ext4/ialloc.c | 44 ++++++++++++++++----------------
fs/ext4/inode.c | 5 ++-
fs/ext4/resize.c | 12 ++++----
fs/ext4/super.c | 20 ++++++--------
include/linux/ext4_fs.h | 11 ++++----
include/linux/ext4_fs_i.h | 5 ++-
include/linux/ext4_fs_sb.h | 2 -
9 files changed, 88 insertions(+), 80 deletions(-)
Index: linux-2.6.23-rc8-new/fs/ext4/balloc.c
===================================================================
--- linux-2.6.23-rc8-new.orig/fs/ext4/balloc.c 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/fs/ext4/balloc.c 2007-10-01 15:14:38.000000000 -0700
@@ -29,7 +29,7 @@
* Calculate the block group number and offset, given a block number
*/
void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
- unsigned long *blockgrpp, ext4_grpblk_t *offsetp)
+ ext4_grpnum_t *blockgrpp, ext4_grpblk_t *offsetp)
{
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
ext4_grpblk_t offset;
@@ -46,7 +46,7 @@
/* Initializes an uninitialized block bitmap if given, and returns the
* number of blocks free in the group. */
unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
- int block_group, struct ext4_group_desc *gdp)
+ ext4_grpnum_t block_group, struct ext4_group_desc *gdp)
{
unsigned long start;
int bit, bit_max;
@@ -60,7 +60,7 @@
* essentially implementing a per-group read-only flag. */
if (!ext4_group_desc_csum_verify(sbi, block_group, gdp)) {
ext4_error(sb, __FUNCTION__,
- "Checksum bad for group %u\n", block_group);
+ "Checksum bad for group %lu\n", block_group);
gdp->bg_free_blocks_count = 0;
gdp->bg_free_inodes_count = 0;
gdp->bg_itable_unused = 0;
@@ -133,7 +133,7 @@
* group descriptor
*/
struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb,
- unsigned int block_group,
+ ext4_grpnum_t block_group,
struct buffer_head ** bh)
{
unsigned long group_desc;
@@ -144,7 +144,7 @@
if (block_group >= sbi->s_groups_count) {
ext4_error (sb, "ext4_get_group_desc",
"block_group >= groups_count - "
- "block_group = %d, groups_count = %lu",
+ "block_group = %lu, groups_count = %lu",
block_group, sbi->s_groups_count);
return NULL;
@@ -156,7 +156,7 @@
if (!sbi->s_group_desc[group_desc]) {
ext4_error (sb, "ext4_get_group_desc",
"Group descriptor not loaded - "
- "block_group = %d, group_desc = %lu, desc = %lu",
+ "block_group = %lu, group_desc = %lu, desc = %lu",
block_group, group_desc, offset);
return NULL;
}
@@ -180,7 +180,7 @@
* Return buffer_head on success or NULL in case of failure.
*/
struct buffer_head *
-read_block_bitmap(struct super_block *sb, unsigned int block_group)
+read_block_bitmap(struct super_block *sb, ext4_grpnum_t block_group)
{
struct ext4_group_desc * desc;
struct buffer_head * bh = NULL;
@@ -205,7 +205,7 @@
if (!bh)
ext4_error (sb, "read_block_bitmap",
"Cannot read block bitmap - "
- "block_group = %d, block_bitmap = %llu",
+ "block_group = %lu, block_bitmap = %llu",
block_group,
ext4_block_bitmap(sb, desc));
error_out:
@@ -300,7 +300,7 @@
*/
static int
goal_in_my_reservation(struct ext4_reserve_window *rsv, ext4_grpblk_t grp_goal,
- unsigned int group, struct super_block * sb)
+ ext4_grpnum_t group, struct super_block *sb)
{
ext4_fsblk_t group_first_block, group_last_block;
@@ -522,7 +522,7 @@
{
struct buffer_head *bitmap_bh = NULL;
struct buffer_head *gd_bh;
- unsigned long block_group;
+ ext4_grpnum_t block_group;
ext4_grpblk_t bit;
unsigned long i;
unsigned long overflow;
@@ -912,9 +912,10 @@
* ext4_journal_release_buffer(), else we'll run out of credits.
*/
static ext4_grpblk_t
-ext4_try_to_allocate(struct super_block *sb, handle_t *handle, int group,
- struct buffer_head *bitmap_bh, ext4_grpblk_t grp_goal,
- unsigned long *count, struct ext4_reserve_window *my_rsv)
+ext4_try_to_allocate(struct super_block *sb, handle_t *handle,
+ ext4_grpnum_t group, struct buffer_head *bitmap_bh,
+ ext4_grpblk_t grp_goal, unsigned long *count,
+ struct ext4_reserve_window *my_rsv)
{
ext4_fsblk_t group_first_block;
ext4_grpblk_t start, end;
@@ -1148,7 +1149,7 @@
*/
static int alloc_new_reservation(struct ext4_reserve_window_node *my_rsv,
ext4_grpblk_t grp_goal, struct super_block *sb,
- unsigned int group, struct buffer_head *bitmap_bh)
+ ext4_grpnum_t group, struct buffer_head *bitmap_bh)
{
struct ext4_reserve_window_node *search_head;
ext4_fsblk_t group_first_block, group_end_block, start_block;
@@ -1346,7 +1347,7 @@
*/
static ext4_grpblk_t
ext4_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle,
- unsigned int group, struct buffer_head *bitmap_bh,
+ ext4_grpnum_t group, struct buffer_head *bitmap_bh,
ext4_grpblk_t grp_goal,
struct ext4_reserve_window_node * my_rsv,
unsigned long *count, int *errp)
@@ -1520,8 +1521,8 @@
{
struct buffer_head *bitmap_bh = NULL;
struct buffer_head *gdp_bh;
- unsigned long group_no;
- int goal_group;
+ ext4_grpnum_t group_no;
+ ext4_grpnum_t goal_group;
ext4_grpblk_t grp_target_blk; /* blockgroup relative goal block */
ext4_grpblk_t grp_alloc_blk; /* blockgroup-relative allocated block*/
ext4_fsblk_t ret_block; /* filesyetem-wide allocated block */
@@ -1539,7 +1540,7 @@
#ifdef EXT4FS_DEBUG
static int goal_hits, goal_attempts;
#endif
- unsigned long ngroups;
+ ext4_grpnum_t ngroups;
unsigned long num = *count;
*errp = -ENOSPC;
@@ -1839,8 +1840,8 @@
{
ext4_fsblk_t desc_count;
struct ext4_group_desc *gdp;
- int i;
- unsigned long ngroups = EXT4_SB(sb)->s_groups_count;
+ ext4_grpnum_t i;
+ ext4_grpnum_t ngroups = EXT4_SB(sb)->s_groups_count;
#ifdef EXT4FS_DEBUG
struct ext4_super_block *es;
ext4_fsblk_t bitmap_count;
@@ -1864,7 +1865,7 @@
continue;
x = ext4_count_free(bitmap_bh, sb->s_blocksize);
- printk("group %d: stored = %d, counted = %lu\n",
+ printk("group %lu: stored = %d, counted = %lu\n",
i, le16_to_cpu(gdp->bg_free_blocks_count), x);
bitmap_count += x;
}
@@ -1897,7 +1898,7 @@
return ext4_test_bit (offset, map);
}
-static inline int test_root(int a, int b)
+static inline int test_root(ext4_grpnum_t a, int b)
{
int num = b;
@@ -1906,7 +1907,7 @@
return num == a;
}
-static int ext4_group_sparse(int group)
+static int ext4_group_sparse(ext4_grpnum_t group)
{
if (group <= 1)
return 1;
@@ -1924,7 +1925,7 @@
* Return the number of blocks used by the superblock (primary or backup)
* in this group. Currently this will be only 0 or 1.
*/
-int ext4_bg_has_super(struct super_block *sb, int group)
+int ext4_bg_has_super(struct super_block *sb, ext4_grpnum_t group)
{
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER) &&
@@ -1933,18 +1934,20 @@
return 1;
}
-static unsigned long ext4_bg_num_gdb_meta(struct super_block *sb, int group)
+static unsigned long ext4_bg_num_gdb_meta(struct super_block *sb,
+ ext4_grpnum_t group)
{
unsigned long metagroup = group / EXT4_DESC_PER_BLOCK(sb);
- unsigned long first = metagroup * EXT4_DESC_PER_BLOCK(sb);
- unsigned long last = first + EXT4_DESC_PER_BLOCK(sb) - 1;
+ ext4_grpnum_t first = metagroup * EXT4_DESC_PER_BLOCK(sb);
+ ext4_grpnum_t last = first + EXT4_DESC_PER_BLOCK(sb) - 1;
if (group == first || group == first + 1 || group == last)
return 1;
return 0;
}
-static unsigned long ext4_bg_num_gdb_nometa(struct super_block *sb, int group)
+static unsigned long ext4_bg_num_gdb_nometa(struct super_block *sb,
+ ext4_grpnum_t group)
{
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER) &&
@@ -1962,7 +1965,7 @@
* (primary or backup) in this group. In the future there may be a
* different number of descriptor blocks in each group.
*/
-unsigned long ext4_bg_num_gdb(struct super_block *sb, int group)
+unsigned long ext4_bg_num_gdb(struct super_block *sb, ext4_grpnum_t group)
{
unsigned long first_meta_bg =
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_meta_bg);
Index: linux-2.6.23-rc8-new/fs/ext4/ialloc.c
===================================================================
--- linux-2.6.23-rc8-new.orig/fs/ext4/ialloc.c 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/fs/ext4/ialloc.c 2007-10-01 15:14:38.000000000 -0700
@@ -64,8 +64,8 @@
}
/* Initializes an uninitialized inode bitmap */
-unsigned ext4_init_inode_bitmap(struct super_block *sb,
- struct buffer_head *bh, int block_group,
+unsigned ext4_init_inode_bitmap(struct super_block *sb, struct buffer_head *bh,
+ ext4_grpnum_t block_group,
struct ext4_group_desc *gdp)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
@@ -75,7 +75,7 @@
/* If checksum is bad mark all blocks and inodes use to prevent
* allocation, essentially implementing a per-group read-only flag. */
if (!ext4_group_desc_csum_verify(sbi, block_group, gdp)) {
- ext4_error(sb, __FUNCTION__, "Checksum bad for group %u\n",
+ ext4_error(sb, __FUNCTION__, "Checksum bad for group %lu\n",
block_group);
gdp->bg_free_blocks_count = 0;
gdp->bg_free_inodes_count = 0;
@@ -98,7 +98,7 @@
* Return buffer_head of bitmap on success or NULL.
*/
static struct buffer_head *
-read_inode_bitmap(struct super_block * sb, unsigned long block_group)
+read_inode_bitmap(struct super_block *sb, ext4_grpnum_t block_group)
{
struct ext4_group_desc *desc;
struct buffer_head *bh = NULL;
@@ -152,7 +152,7 @@
unsigned long ino;
struct buffer_head *bitmap_bh = NULL;
struct buffer_head *bh2;
- unsigned long block_group;
+ ext4_grpnum_t block_group;
unsigned long bit;
struct ext4_group_desc * gdp;
struct ext4_super_block * es;
@@ -260,13 +260,13 @@
* For other inodes, search forward from the parent directory\'s block
* group to find a free inode.
*/
-static int find_group_dir(struct super_block *sb, struct inode *parent)
+static ext4_grpnum_t find_group_dir(struct super_block *sb, struct inode *parent)
{
- int ngroups = EXT4_SB(sb)->s_groups_count;
+ ext4_grpnum_t ngroups = EXT4_SB(sb)->s_groups_count;
unsigned int freei, avefreei;
struct ext4_group_desc *desc, *best_desc = NULL;
struct buffer_head *bh;
- int group, best_group = -1;
+ ext4_grpnum_t group, best_group = -1;
freei = percpu_counter_read_positive(&EXT4_SB(sb)->s_freeinodes_counter);
avefreei = freei / ngroups;
@@ -315,12 +315,12 @@
#define INODE_COST 64
#define BLOCK_COST 256
-static int find_group_orlov(struct super_block *sb, struct inode *parent)
+static ext4_grpnum_t find_group_orlov(struct super_block *sb, struct inode *parent)
{
- int parent_group = EXT4_I(parent)->i_block_group;
+ ext4_grpnum_t parent_group = EXT4_I(parent)->i_block_group;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
- int ngroups = sbi->s_groups_count;
+ ext4_grpnum_t ngroups = sbi->s_groups_count;
int inodes_per_group = EXT4_INODES_PER_GROUP(sb);
unsigned int freei, avefreei;
ext4_fsblk_t freeb, avefreeb;
@@ -328,7 +328,7 @@
unsigned int ndirs;
int max_debt, max_dirs, min_inodes;
ext4_grpblk_t min_blocks;
- int group = -1, i;
+ ext4_grpnum_t group = -1, i;
struct ext4_group_desc *desc;
struct buffer_head *bh;
@@ -342,7 +342,7 @@
if ((parent == sb->s_root->d_inode) ||
(EXT4_I(parent)->i_flags & EXT4_TOPDIR_FL)) {
int best_ndir = inodes_per_group;
- int best_group = -1;
+ ext4_grpnum_t best_group = -1;
get_random_bytes(&group, sizeof(group));
parent_group = (unsigned)group % ngroups;
@@ -417,13 +417,13 @@
return -1;
}
-static int find_group_other(struct super_block *sb, struct inode *parent)
+static ext4_grpnum_t find_group_other(struct super_block *sb, struct inode *parent)
{
- int parent_group = EXT4_I(parent)->i_block_group;
- int ngroups = EXT4_SB(sb)->s_groups_count;
+ ext4_grpnum_t parent_group = EXT4_I(parent)->i_block_group;
+ ext4_grpnum_t ngroups = EXT4_SB(sb)->s_groups_count;
struct ext4_group_desc *desc;
struct buffer_head *bh;
- int group, i;
+ ext4_grpnum_t group, i;
/*
* Try to place the inode in its parent directory
@@ -490,7 +490,7 @@
struct super_block *sb;
struct buffer_head *bitmap_bh = NULL;
struct buffer_head *bh2;
- int group;
+ ext4_grpnum_t group;
unsigned long ino = 0;
struct inode * inode;
struct ext4_group_desc * gdp = NULL;
@@ -586,7 +586,7 @@
ino > EXT4_INODES_PER_GROUP(sb)) {
ext4_error(sb, __FUNCTION__,
"reserved inode or inode > inodes count - "
- "block_group = %d, inode=%lu", group,
+ "block_group = %lu, inode=%lu", group,
ino + group * EXT4_INODES_PER_GROUP(sb));
err = -EIO;
goto fail;
@@ -780,7 +780,7 @@
struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
{
unsigned long max_ino = le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count);
- unsigned long block_group;
+ ext4_grpnum_t block_group;
int bit;
struct buffer_head *bitmap_bh = NULL;
struct inode *inode = NULL;
@@ -836,7 +836,7 @@
{
unsigned long desc_count;
struct ext4_group_desc *gdp;
- int i;
+ ext4_grpnum_t i;
#ifdef EXT4FS_DEBUG
struct ext4_super_block *es;
unsigned long bitmap_count, x;
@@ -882,7 +882,7 @@
unsigned long ext4_count_dirs (struct super_block * sb)
{
unsigned long count = 0;
- int i;
+ ext4_grpnum_t i;
for (i = 0; i < EXT4_SB(sb)->s_groups_count; i++) {
struct ext4_group_desc *gdp = ext4_get_group_desc (sb, i, NULL);
Index: linux-2.6.23-rc8-new/fs/ext4/inode.c
===================================================================
--- linux-2.6.23-rc8-new.orig/fs/ext4/inode.c 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/fs/ext4/inode.c 2007-10-01 15:14:38.000000000 -0700
@@ -2501,7 +2501,8 @@
static ext4_fsblk_t ext4_get_inode_block(struct super_block *sb,
unsigned long ino, struct ext4_iloc *iloc)
{
- unsigned long desc, group_desc, block_group;
+ unsigned long desc, group_desc;
+ ext4_grpnum_t block_group;
unsigned long offset;
ext4_fsblk_t block;
struct buffer_head *bh;
@@ -2588,7 +2589,7 @@
struct ext4_group_desc *desc;
int inodes_per_buffer;
int inode_offset, i;
- int block_group;
+ ext4_grpnum_t block_group;
int start;
block_group = (inode->i_ino - 1) /
Index: linux-2.6.23-rc8-new/fs/ext4/resize.c
===================================================================
--- linux-2.6.23-rc8-new.orig/fs/ext4/resize.c 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/fs/ext4/resize.c 2007-10-01 15:14:38.000000000 -0700
@@ -28,7 +28,7 @@
struct ext4_super_block *es = sbi->s_es;
ext4_fsblk_t start = ext4_blocks_count(es);
ext4_fsblk_t end = start + input->blocks_count;
- unsigned group = input->group;
+ ext4_grpnum_t group = input->group;
ext4_fsblk_t itend = input->inode_table + sbi->s_itb_per_group;
unsigned overhead = ext4_bg_has_super(sb, group) ?
(1 + ext4_bg_num_gdb(sb, group) +
@@ -336,7 +336,7 @@
struct buffer_head *primary)
{
const ext4_fsblk_t blk = primary->b_blocknr;
- const unsigned long end = EXT4_SB(sb)->s_groups_count;
+ const ext4_grpnum_t end = EXT4_SB(sb)->s_groups_count;
unsigned three = 1;
unsigned five = 5;
unsigned seven = 7;
@@ -635,12 +635,12 @@
int blk_off, char *data, int size)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- const unsigned long last = sbi->s_groups_count;
+ const ext4_grpnum_t last = sbi->s_groups_count;
const int bpg = EXT4_BLOCKS_PER_GROUP(sb);
unsigned three = 1;
unsigned five = 5;
unsigned seven = 7;
- unsigned group;
+ ext4_grpnum_t group;
int rest = sb->s_blocksize - size;
handle_t *handle;
int err = 0, err2;
@@ -695,7 +695,7 @@
exit_err:
if (err) {
ext4_warning(sb, __FUNCTION__,
- "can't update backup for group %d (err %d), "
+ "can't update backup for group %lu (err %d), "
"forcing fsck on next reboot", group, err);
sbi->s_mount_state &= ~EXT4_VALID_FS;
sbi->s_es->s_state &= cpu_to_le16(~EXT4_VALID_FS);
@@ -931,7 +931,7 @@
ext4_fsblk_t n_blocks_count)
{
ext4_fsblk_t o_blocks_count;
- unsigned long o_groups_count;
+ ext4_grpnum_t o_groups_count;
ext4_grpblk_t last;
ext4_grpblk_t add;
struct buffer_head * bh;
Index: linux-2.6.23-rc8-new/fs/ext4/super.c
===================================================================
--- linux-2.6.23-rc8-new.orig/fs/ext4/super.c 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/fs/ext4/super.c 2007-10-01 15:14:38.000000000 -0700
@@ -1322,7 +1322,7 @@
struct ext4_group_desc * gdp = NULL;
int desc_block = 0;
int flexbg_flag = 0;
- int i;
+ ext4_grpnum_t i;
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
flexbg_flag = 1;
@@ -1344,7 +1344,7 @@
if (block_bitmap < first_block || block_bitmap > last_block)
{
ext4_error (sb, "ext4_check_descriptors",
- "Block bitmap for group %d"
+ "Block bitmap for group %lu"
" not in group (block %llu)!",
i, block_bitmap);
return 0;
@@ -1353,7 +1353,7 @@
if (inode_bitmap < first_block || inode_bitmap > last_block)
{
ext4_error (sb, "ext4_check_descriptors",
- "Inode bitmap for group %d"
+ "Inode bitmap for group %lu"
" not in group (block %llu)!",
i, inode_bitmap);
return 0;
@@ -1363,17 +1363,16 @@
inode_table + sbi->s_itb_per_group - 1 > last_block)
{
ext4_error (sb, "ext4_check_descriptors",
- "Inode table for group %d"
+ "Inode table for group %lu"
" not in group (block %llu)!",
i, inode_table);
return 0;
}
if (!ext4_group_desc_csum_verify(sbi, i, gdp)) {
ext4_error(sb, __FUNCTION__,
- "Checksum for group %d failed (%u!=%u)\n", i,
- le16_to_cpu(ext4_group_desc_csum(sbi, i,
- gdp)),
- le16_to_cpu(gdp->bg_checksum));
+ "Checksum for group %lu failed (%u!=%u)\n",
+ i, le16_to_cpu(ext4_group_desc_csum(sbi, i,
+ gdp)), le16_to_cpu(gdp->bg_checksum));
return 0;
}
if (!flexbg_flag)
@@ -1387,7 +1386,6 @@
return 1;
}
-
/* ext4_orphan_cleanup() walks a singly-linked list of inodes (starting at
* the superblock) which were deleted from all directories, but held open by
* a process at the time of a crash. We walk the list and try to delete these
@@ -1530,7 +1528,7 @@
ext4_fsblk_t logical_sb_block, int nr)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- unsigned long bg, first_meta_bg;
+ ext4_grpnum_t bg, first_meta_bg;
int has_super = 0;
first_meta_bg = le32_to_cpu(sbi->s_es->s_first_meta_bg);
@@ -2644,7 +2642,7 @@
if (test_opt(sb, MINIX_DF)) {
sbi->s_overhead_last = 0;
} else if (sbi->s_blocks_last != le32_to_cpu(es->s_blocks_count)) {
- unsigned long ngroups = sbi->s_groups_count, i;
+ ext4_grpnum_t ngroups = sbi->s_groups_count, i;
ext4_fsblk_t overhead = 0;
smp_rmb();
Index: linux-2.6.23-rc8-new/include/linux/ext4_fs.h
===================================================================
--- linux-2.6.23-rc8-new.orig/include/linux/ext4_fs.h 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/include/linux/ext4_fs.h 2007-10-01 15:14:38.000000000 -0700
@@ -875,7 +875,7 @@
{
struct buffer_head *bh;
unsigned long offset;
- unsigned long block_group;
+ ext4_grpnum_t block_group;
};
static inline struct ext4_inode *ext4_raw_inode(struct ext4_iloc *iloc)
@@ -900,7 +900,7 @@
/* calculate the first block number of the group */
static inline ext4_fsblk_t
-ext4_group_first_block_no(struct super_block *sb, unsigned long group_no)
+ext4_group_first_block_no(struct super_block *sb, ext4_grpnum_t group_no)
{
return group_no * (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) +
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
@@ -931,8 +931,9 @@
ext4_fsblk_t blocknr);
extern ext4_grpblk_t ext4_block_group_offset(struct super_block *sb,
ext4_fsblk_t blocknr);
-extern int ext4_bg_has_super(struct super_block *sb, int group);
-extern unsigned long ext4_bg_num_gdb(struct super_block *sb, int group);
+extern int ext4_bg_has_super(struct super_block *sb, ext4_grpnum_t group);
+extern unsigned long ext4_bg_num_gdb(struct super_block *sb,
+ ext4_grpnum_t group);
extern ext4_fsblk_t ext4_new_block (handle_t *handle, struct inode *inode,
ext4_fsblk_t goal, int *errp);
extern ext4_fsblk_t ext4_new_blocks (handle_t *handle, struct inode *inode,
@@ -945,7 +946,7 @@
extern ext4_fsblk_t ext4_count_free_blocks (struct super_block *);
extern void ext4_check_blocks_bitmap (struct super_block *);
extern struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb,
- unsigned int block_group,
+ ext4_grpnum_t block_group,
struct buffer_head ** bh);
extern int ext4_should_retry_alloc(struct super_block *sb, int *retries);
extern void ext4_init_block_alloc_info(struct inode *);
Index: linux-2.6.23-rc8-new/include/linux/ext4_fs_i.h
===================================================================
--- linux-2.6.23-rc8-new.orig/include/linux/ext4_fs_i.h 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/include/linux/ext4_fs_i.h 2007-10-01 15:14:38.000000000 -0700
@@ -27,6 +27,9 @@
/* data type for filesystem-wide blocks number */
typedef unsigned long long ext4_fsblk_t;
+/* data type for block group number */
+typedef unsigned long ext4_grpnum_t;
+
struct ext4_reserve_window {
ext4_fsblk_t _rsv_start; /* First byte reserved */
ext4_fsblk_t _rsv_end; /* Last byte reserved or 0 */
@@ -89,7 +92,7 @@
* place a file's data blocks near its inode block, and new inodes
* near to their parent directory's inode.
*/
- __u32 i_block_group;
+ ext4_grpnum_t i_block_group;
__u32 i_state; /* Dynamic state flags for ext4 */
/* block reservation info */
Index: linux-2.6.23-rc8-new/include/linux/ext4_fs_sb.h
===================================================================
--- linux-2.6.23-rc8-new.orig/include/linux/ext4_fs_sb.h 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/include/linux/ext4_fs_sb.h 2007-10-01 15:14:38.000000000 -0700
@@ -35,7 +35,7 @@
unsigned long s_itb_per_group; /* Number of inode table blocks per group */
unsigned long s_gdb_count; /* Number of group descriptor blocks */
unsigned long s_desc_per_block; /* Number of group descriptors per block */
- unsigned long s_groups_count; /* Number of groups in the fs */
+ ext4_grpnum_t s_groups_count; /* Number of groups in the fs */
unsigned long s_overhead_last; /* Last calculated overhead */
unsigned long s_blocks_last; /* Last seen block count */
struct buffer_head * s_sbh; /* Buffer containing the super block */
Index: linux-2.6.23-rc8-new/fs/ext4/group.h
===================================================================
--- linux-2.6.23-rc8-new.orig/fs/ext4/group.h 2007-10-01 15:14:19.000000000 -0700
+++ linux-2.6.23-rc8-new/fs/ext4/group.h 2007-10-01 15:14:38.000000000 -0700
@@ -17,13 +17,15 @@
extern int ext4_group_desc_csum_verify(struct ext4_sb_info *sbi, __u32 group,
struct ext4_group_desc *gdp);
struct buffer_head *read_block_bitmap(struct super_block *sb,
- unsigned int block_group);
+ ext4_grpnum_t block_group);
extern unsigned ext4_init_block_bitmap(struct super_block *sb,
- struct buffer_head *bh, int group,
+ struct buffer_head *bh,
+ ext4_grpnum_t group,
struct ext4_group_desc *desc);
#define ext4_free_blocks_after_init(sb, group, desc) \
ext4_init_block_bitmap(sb, NULL, group, desc)
extern unsigned ext4_init_inode_bitmap(struct super_block *sb,
- struct buffer_head *bh, int group,
+ struct buffer_head *bh,
+ ext4_grpnum_t group,
struct ext4_group_desc *desc);
#endif /* _LINUX_EXT4_GROUP_H */
-
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