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Date: Tue, 02 Oct 2007 17:33:15 -0700
From: Avantika Mathur <mathur@...ux.vnet.ibm.com>
To: linux-ext4@...r.kernel.org
Subject: [PATCH, RFC 3/3] ext4_grpnum_t: mballoc changes
Ext4: ext4_grpnum_t mballoc.c change
from: mathur@...ibm.com
Change block group variables to type ext4_grpnum_t in mballoc.c
Signed-off-by: Avantika Mathur <mathur@...ibm.com>
---
fs/ext4/mballoc.c | 72 +++++++++++++++++++++++++++---------------------------
1 file changed, 37 insertions(+), 35 deletions(-)
Index: linux-2.6.23-rc8-new/fs/ext4/mballoc.c
===================================================================
--- linux-2.6.23-rc8-new.orig/fs/ext4/mballoc.c 2007-10-01 15:17:36.000000000 -0700
+++ linux-2.6.23-rc8-new/fs/ext4/mballoc.c 2007-10-01 15:18:04.000000000 -0700
@@ -310,7 +310,7 @@
#define EXT4_BB_MAX_BLOCKS 30
struct ext4_free_metadata {
- unsigned short group;
+ ext4_grpnum_t group;
unsigned short num;
unsigned short blocks[EXT4_BB_MAX_BLOCKS];
struct list_head list;
@@ -361,7 +361,7 @@
struct ext4_free_extent {
unsigned long fe_logical;
ext4_grpblk_t fe_start;
- unsigned long fe_group;
+ ext4_grpnum_t fe_group;
unsigned long fe_len;
};
@@ -440,7 +440,7 @@
struct ext4_group_info *bd_info;
struct super_block *bd_sb;
__u16 bd_blkbits;
- __u16 bd_group;
+ ext4_grpnum_t bd_group;
};
#define EXT4_MB_BITMAP(e4b) ((e4b)->bd_bitmap)
#define EXT4_MB_BUDDY(e4b) ((e4b)->bd_buddy)
@@ -462,7 +462,8 @@
void ext4_mb_release_blocks(struct super_block *, int);
void ext4_mb_poll_new_transaction(struct super_block *, handle_t *);
void ext4_mb_free_committed_blocks(struct super_block *);
-void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap, int group);
+void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap,
+ ext4_grpnum_t group);
void ext4_mb_free_consumed_preallocations(struct ext4_allocation_context *ac);
void ext4_mb_return_to_preallocation(struct inode *inode,
struct ext4_buddy *e4b, sector_t block,
@@ -476,21 +477,21 @@
static inline void
-ext4_lock_group(struct super_block *sb, int group)
+ext4_lock_group(struct super_block *sb, ext4_grpnum_t group)
{
bit_spin_lock(EXT4_GROUP_INFO_LOCKED_BIT,
&EXT4_GROUP_INFO(sb, group)->bb_state);
}
static inline void
-ext4_unlock_group(struct super_block *sb, int group)
+ext4_unlock_group(struct super_block *sb, ext4_grpnum_t group)
{
bit_spin_unlock(EXT4_GROUP_INFO_LOCKED_BIT,
&EXT4_GROUP_INFO(sb, group)->bb_state);
}
static inline int
-ext4_is_group_locked(struct super_block *sb, int group)
+ext4_is_group_locked(struct super_block *sb, ext4_grpnum_t group)
{
return bit_spin_is_locked(EXT4_GROUP_INFO_LOCKED_BIT,
&EXT4_GROUP_INFO(sb, group)->bb_state);
@@ -630,7 +631,7 @@
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
ext4_error(sb, __FUNCTION__, "double-free of inode"
- " %lu's block %lu(bit %u in group %u)\n",
+ " %lu's block %lu(bit %u in group %lu)\n",
inode ? inode->i_ino : 0, blocknr,
first + i, e4b->bd_group);
}
@@ -660,8 +661,8 @@
b2 = (unsigned char *) bitmap;
for (i = 0; i < e4b->bd_sb->s_blocksize; i++) {
if (b1[i] != b2[i]) {
- printk("corruption in group %u at byte %u(%u): "
- "%x in copy != %x on disk/prealloc\n",
+ printk("corruption in group %lu at byte %u(%u):"
+ " %x in copy != %x on disk/prealloc\n",
e4b->bd_group, i, i * 8, b1[i], b2[i]);
BUG();
}
@@ -778,7 +779,7 @@
grp = EXT4_GROUP_INFO(sb, e4b->bd_group);
buddy = mb_find_buddy(e4b, 0, &max);
list_for_each(cur, &grp->bb_prealloc_list) {
- unsigned long groupnr;
+ ext4_grpnum_t groupnr;
struct ext4_prealloc_space *pa;
pa = list_entry(cur, struct ext4_prealloc_space, group_list);
ext4_get_group_no_and_offset(sb, pa->pstart, &groupnr, &k);
@@ -852,7 +853,7 @@
static void
ext4_mb_generate_buddy(struct super_block *sb, void *buddy, void *bitmap,
- int group)
+ ext4_grpnum_t group)
{
struct ext4_group_info *grp = EXT4_GROUP_INFO(sb, group);
unsigned short max = EXT4_BLOCKS_PER_GROUP(sb);
@@ -883,7 +884,7 @@
grp->bb_fragments = fragments;
if (free != grp->bb_free) {
- printk("EXT4-fs: group %u: %u blocks in bitmap, %u in gd\n",
+ printk("EXT4-fs: group %lu: %u blocks in bitmap, %u in gd\n",
group, free, grp->bb_free);
grp->bb_free = free;
}
@@ -921,7 +922,7 @@
int groups_per_page;
int err = 0;
int i;
- int first_group;
+ ext4_grpnum_t first_group;
int first_block;
struct super_block *sb;
struct buffer_head *bhs;
@@ -1062,7 +1063,7 @@
return err;
}
-static int ext4_mb_load_buddy(struct super_block *sb, int group,
+static int ext4_mb_load_buddy(struct super_block *sb, ext4_grpnum_t group,
struct ext4_buddy *e4b)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
@@ -1073,7 +1074,7 @@
int poff;
struct page *page;
- mb_debug("load group %u\n", group);
+ mb_debug("load group %lu\n", group);
blocks_per_page = PAGE_CACHE_SIZE / sb->s_blocksize;
@@ -1262,7 +1263,7 @@
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
ext4_error(sb, __FUNCTION__, "double-free of inode"
- " %lu's block %lu(bit %u in group %u)\n",
+ " %lu's block %lu(bit %u in group %lu)\n",
inode ? inode->i_ino : 0, blocknr, block,
e4b->bd_group);
}
@@ -1590,7 +1591,7 @@
struct ext4_buddy *e4b)
{
struct ext4_free_extent ex = ac->ac_b_ex;
- int group = ex.fe_group;
+ ext4_grpnum_t group = ex.fe_group;
int max;
int err;
@@ -1616,7 +1617,7 @@
static int ext4_mb_find_by_goal(struct ext4_allocation_context *ac,
struct ext4_buddy *e4b)
{
- int group = ac->ac_g_ex.fe_group;
+ ext4_grpnum_t group = ac->ac_g_ex.fe_group;
int max;
int err;
struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
@@ -1785,7 +1786,7 @@
}
static int ext4_mb_good_group(struct ext4_allocation_context *ac,
- int group, int cr)
+ ext4_grpnum_t group, int cr)
{
struct ext4_group_info *grp = EXT4_GROUP_INFO(ac->ac_sb, group);
unsigned free;
@@ -1830,8 +1831,8 @@
int ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
{
- int group;
- int i;
+ ext4_grpnum_t group;
+ ext4_grpnum_t i;
int cr;
int err = 0;
struct ext4_sb_info *sbi;
@@ -2176,7 +2177,7 @@
{
struct super_block *sb = seq->private;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- long group;
+ ext4_grpnum_t group;
if (*pos < 0 || *pos >= sbi->s_groups_count)
return NULL;
@@ -2189,7 +2190,7 @@
{
struct super_block *sb = seq->private;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- long group;
+ ext4_grpnum_t group;
++*pos;
if (*pos < 0 || *pos >= sbi->s_groups_count)
@@ -3355,12 +3356,13 @@
* the function goes through all preallocation in this group and marks them
* used in in-core bitmap. buddy must be generated from this bitmap
*/
-void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap, int group)
+void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap,
+ ext4_grpnum_t group)
{
struct ext4_group_info *grp = EXT4_GROUP_INFO(sb, group);
struct ext4_prealloc_space *pa;
struct list_head *cur;
- unsigned long groupnr;
+ ext4_grpnum_t groupnr;
ext4_grpblk_t start;
int preallocated = 0;
int count = 0;
@@ -3386,7 +3388,7 @@
preallocated += len;
count++;
}
- mb_debug("prellocated %u for group %u\n", preallocated, group);
+ mb_debug("prellocated %u for group %lu\n", preallocated, group);
}
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 5)
@@ -3627,7 +3629,7 @@
struct ext4_sb_info *sbi = EXT4_SB(sb);
unsigned long end;
unsigned long next;
- unsigned long group;
+ ext4_grpnum_t group;
ext4_grpblk_t bit;
sector_t start;
int err = 0;
@@ -3683,7 +3685,7 @@
{
struct ext4_allocation_context ac;
struct super_block *sb = e4b->bd_sb;
- unsigned long group;
+ ext4_grpnum_t group;
ext4_grpblk_t bit;
ac.ac_op = EXT4_MB_HISTORY_DISCARD;
@@ -3715,7 +3717,7 @@
* 1) how many requested
*/
int ext4_mb_discard_group_preallocations(struct super_block *sb,
- int group, int needed)
+ ext4_grpnum_t group, int needed)
{
struct ext4_group_info *grp = EXT4_GROUP_INFO(sb, group);
struct buffer_head *bitmap_bh = NULL;
@@ -3827,7 +3829,7 @@
struct super_block *sb = inode->i_sb;
struct buffer_head *bitmap_bh = NULL;
struct ext4_prealloc_space *pa, *tmp;
- unsigned long group = 0;
+ ext4_grpnum_t group = 0;
struct list_head list;
struct ext4_buddy e4b;
int err;
@@ -4021,7 +4023,7 @@
struct super_block *sb = ar->inode->i_sb;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
- unsigned long group;
+ ext4_grpnum_t group;
unsigned long len;
unsigned long goal;
ext4_grpblk_t block;
@@ -4112,7 +4114,7 @@
int ext4_mb_discard_preallocations(struct super_block *sb, int needed)
{
- int i;
+ ext4_grpnum_t i;
int ret;
int freed = 0;
@@ -4248,7 +4250,7 @@
}
int ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
- int group, int block, int count)
+ ext4_grpnum_t group, int block, int count)
{
struct ext4_group_info *db = e4b->bd_info;
struct super_block *sb = e4b->bd_sb;
@@ -4323,7 +4325,7 @@
unsigned long overflow;
ext4_grpblk_t bit;
struct buffer_head *gd_bh;
- unsigned long block_group;
+ ext4_grpnum_t block_group;
struct ext4_sb_info *sbi;
struct ext4_buddy e4b;
int err = 0;
-
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