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Message-ID: <46D8D0B6.40608@redhat.com>
Date: Fri, 31 Aug 2007 21:38:46 -0500
From: Eric Sandeen <sandeen@...hat.com>
To: Andreas Dilger <adilger@...sterfs.com>
CC: ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] placate checkpatch.pl to some degree for mballoc.c
Andreas Dilger wrote:
> On Aug 31, 2007 16:28 -0500, Eric Sandeen wrote:
>
>> Here's a patch for mballoc.c, to make checkpatch happier with it.
>>
>> I was about as pedantic as I could be, except for a few things it
>> complained about which I just could not agree with. :)
>>
>
> I'm happy with the changes, since I've adopted the kernel CodingStyle
> as my own, but not everyone at CFS has.
>
>
>> One of the comments in the series file in git says checkpatch doesn't like
>> mballoc, so, here you go, if it's helpful. Applies to the bottom of the
>> patch stack - should some of these mballoc patches get rolled together by
>> now?
>>
>> -Eric
>>
>> Make checkpatch happier with mballoc.c
>>
>> Signed-off-by: Eric Sandeen <sandeen@...hat.com>
>>
>
> You can add my "Signed-off-by: Andreas Dilger <adilger@...sterfs.com>"
>
>
>> @@ -829,7 +845,8 @@ ext4_mb_mark_free_simple(struct super_bl
>> - mb_clear_bit(first >> min, buddy + sbi->s_mb_offsets[min]);
>> + mb_clear_bit(first >> min,
>> + buddy + sbi->s_mb_offsets[min]);
>>
>
> Hmm, shouldn't "buddy" be aligned on the '(' from the previous line?
>
Maybe this is better... honestly some of those lines were kind of
hard to break nicely... and CodingStyle (shouldn't that be coding_style?) ;)
says "placed substantially to the right" - but I'm easy. Many of the
already-broken lines are on tab boundaries; others are not. If we
really want to, I'm sure there's more cosmetic fluff to be done but this
at least should get it in the ballpark.
thanks,
-Eric
Signed-off-by: Eric Sandeen <sandeen@...hat.com>
Index: ext4.git/fs/ext4/mballoc.c
===================================================================
--- ext4.git.orig/fs/ext4/mballoc.c
+++ ext4.git/fs/ext4/mballoc.c
@@ -247,9 +247,9 @@
*/
#define MB_DEBUG__
#ifdef MB_DEBUG
-#define mb_debug(fmt,a...) printk(fmt, ##a)
+#define mb_debug(fmt, a...) printk(fmt, ##a)
#else
-#define mb_debug(fmt,a...)
+#define mb_debug(fmt, a...)
#endif
/*
@@ -303,7 +303,7 @@
*/
#define MB_DEFAULT_STRIPE 256
-static struct kmem_cache *ext4_pspace_cachep = NULL;
+static struct kmem_cache *ext4_pspace_cachep;
#ifdef EXT4_BB_MAX_BLOCKS
#undef EXT4_BB_MAX_BLOCKS
@@ -353,7 +353,7 @@ struct ext4_prealloc_space {
unsigned short pa_len; /* len of preallocated chunk */
unsigned short pa_free; /* how many blocks are free */
unsigned short pa_linear; /* consumed in one direction
- * strictly, for group prealloc */
+ * strictly, for grp prealloc */
spinlock_t *pa_obj_lock;
struct inode *pa_inode; /* hack, for history only */
};
@@ -456,8 +456,8 @@ static void ext4_mb_store_history(struct
static struct proc_dir_entry *proc_root_ext4;
-int ext4_create (struct inode *, struct dentry *, int, struct nameidata *);
-struct buffer_head * read_block_bitmap(struct super_block *, unsigned int);
+int ext4_create(struct inode *, struct dentry *, int, struct nameidata *);
+struct buffer_head *read_block_bitmap(struct super_block *, unsigned int);
ext4_fsblk_t ext4_new_blocks_old(handle_t *handle, struct inode *inode,
ext4_fsblk_t goal, unsigned long *count, int *errp);
void ext4_mb_release_blocks(struct super_block *, int);
@@ -465,11 +465,13 @@ void ext4_mb_poll_new_transaction(struct
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_free_consumed_preallocations(struct ext4_allocation_context *ac);
-void ext4_mb_return_to_preallocation(struct inode *inode, struct ext4_buddy *e3b,
- sector_t block, int count);
+void ext4_mb_return_to_preallocation(struct inode *inode,
+ struct ext4_buddy *e3b, sector_t block,
+ int count);
void ext4_mb_show_ac(struct ext4_allocation_context *ac);
void ext4_mb_check_with_pa(struct ext4_buddy *e3b, int first, int count);
-void ext4_mb_put_pa(struct ext4_allocation_context *, struct super_block *, struct ext4_prealloc_space *pa);
+void ext4_mb_put_pa(struct ext4_allocation_context *, struct super_block *,
+ struct ext4_prealloc_space *pa);
int ext4_mb_init_per_dev_proc(struct super_block *sb);
int ext4_mb_destroy_per_dev_proc(struct super_block *sb);
@@ -507,13 +509,13 @@ unsigned long ext4_grp_offs_to_block(str
}
#if BITS_PER_LONG == 64
-#define mb_correct_addr_and_bit(bit,addr) \
+#define mb_correct_addr_and_bit(bit, addr) \
{ \
bit += ((unsigned long) addr & 7UL) << 3; \
addr = (void *) ((unsigned long) addr & ~7UL); \
}
#elif BITS_PER_LONG == 32
-#define mb_correct_addr_and_bit(bit,addr) \
+#define mb_correct_addr_and_bit(bit, addr) \
{ \
bit += ((unsigned long) addr & 3UL) << 3; \
addr = (void *) ((unsigned long) addr & ~3UL); \
@@ -524,31 +526,31 @@ unsigned long ext4_grp_offs_to_block(str
static inline int mb_test_bit(int bit, void *addr)
{
- mb_correct_addr_and_bit(bit,addr);
+ mb_correct_addr_and_bit(bit, addr);
return ext2_test_bit(bit, addr);
}
static inline void mb_set_bit(int bit, void *addr)
{
- mb_correct_addr_and_bit(bit,addr);
+ mb_correct_addr_and_bit(bit, addr);
ext2_set_bit(bit, addr);
}
static inline void mb_set_bit_atomic(int bit, void *addr)
{
- mb_correct_addr_and_bit(bit,addr);
+ mb_correct_addr_and_bit(bit, addr);
ext2_set_bit_atomic(NULL, bit, addr);
}
static inline void mb_clear_bit(int bit, void *addr)
{
- mb_correct_addr_and_bit(bit,addr);
+ mb_correct_addr_and_bit(bit, addr);
ext2_clear_bit(bit, addr);
}
static inline void mb_clear_bit_atomic(int bit, void *addr)
{
- mb_correct_addr_and_bit(bit,addr);
+ mb_correct_addr_and_bit(bit, addr);
ext2_clear_bit_atomic(NULL, bit, addr);
}
@@ -615,7 +617,7 @@ static inline void *mb_find_buddy(struct
#ifdef DOUBLE_CHECK
void mb_free_blocks_double(struct inode *inode, struct ext4_buddy *e3b,
- int first, int count)
+ int first, int count)
{
int i;
struct super_block *sb = e3b->bd_sb;
@@ -643,6 +645,7 @@ void mb_free_blocks_double(struct inode
void mb_mark_used_double(struct ext4_buddy *e3b, int first, int count)
{
int i;
+
if (unlikely(e3b->bd_info->bb_bitmap == NULL))
return;
BUG_ON(!ext4_is_group_locked(e3b->bd_sb, e3b->bd_group));
@@ -671,9 +674,9 @@ void mb_cmp_bitmaps(struct ext4_buddy *e
}
#else
-#define mb_free_blocks_double(a,b,c,d)
-#define mb_mark_used_double(a,b,c)
-#define mb_cmp_bitmaps(a,b)
+#define mb_free_blocks_double(a, b, c, d)
+#define mb_mark_used_double(a, b, c)
+#define mb_cmp_bitmaps(a, b)
#endif
#ifdef AGGRESSIVE_CHECK
@@ -681,7 +684,7 @@ void mb_cmp_bitmaps(struct ext4_buddy *e
#define MB_CHECK_ASSERT(assert) \
do { \
if (!(assert)) { \
- printk (KERN_EMERG \
+ printk(KERN_EMERG \
"Assertion failure in %s() at %s:%d: \"%s\"\n", \
function, file, line, # assert); \
BUG(); \
@@ -693,11 +696,18 @@ static int __mb_check_buddy(struct ext4_
{
struct super_block *sb = e3b->bd_sb;
int order = e3b->bd_blkbits + 1;
- int max, max2, i, j, k, count;
+ int max;
+ int max2;
+ int i;
+ int j;
+ int k;
+ int count;
struct ext4_group_info *grp;
- int fragments = 0, fstart;
+ int fragments = 0;
+ int fstart;
struct list_head *cur;
- void *buddy, *buddy2;
+ void *buddy;
+ void *buddy2;
if (!test_opt(sb, MBALLOC))
return 0;
@@ -721,10 +731,13 @@ static int __mb_check_buddy(struct ext4_
if (mb_test_bit(i, buddy)) {
/* only single bit in buddy2 may be 1 */
- if (!mb_test_bit(i << 1, buddy2))
- MB_CHECK_ASSERT(mb_test_bit((i<<1)+1, buddy2));
- else if (!mb_test_bit((i << 1) + 1, buddy2))
- MB_CHECK_ASSERT(mb_test_bit(i << 1, buddy2));
+ if (!mb_test_bit(i << 1, buddy2)) {
+ MB_CHECK_ASSERT(
+ mb_test_bit((i<<1)+1, buddy2));
+ } else if (!mb_test_bit((i << 1) + 1, buddy2)) {
+ MB_CHECK_ASSERT(
+ mb_test_bit(i << 1, buddy2));
+ }
continue;
}
@@ -734,7 +747,8 @@ static int __mb_check_buddy(struct ext4_
for (j = 0; j < (1 << order); j++) {
k = (i * (1 << order)) + j;
- MB_CHECK_ASSERT(!mb_test_bit(k, EXT4_MB_BITMAP(e3b)));
+ MB_CHECK_ASSERT(
+ !mb_test_bit(k, EXT4_MB_BITMAP(e3b)));
}
count++;
}
@@ -779,13 +793,13 @@ static int __mb_check_buddy(struct ext4_
return 0;
}
#undef MB_CHECK_ASSERT
-#define mb_check_buddy(e3b) __mb_check_buddy(e3b,__FILE__,__FUNCTION__,__LINE__)
+#define mb_check_buddy(e3b) __mb_check_buddy(e3b, __FILE__, __FUNCTION__, __LINE__)
#else
#define mb_check_buddy(e3b)
#endif
/* find most significant bit */
-static int inline fmsb(unsigned short word)
+static inline int fmsb(unsigned short word)
{
int order;
@@ -804,12 +818,15 @@ static int inline fmsb(unsigned short wo
return order;
}
-static void inline
+static inline void
ext4_mb_mark_free_simple(struct super_block *sb, void *buddy, unsigned first,
int len, struct ext4_group_info *grp)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- unsigned short min, max, chunk, border;
+ unsigned short min;
+ unsigned short max;
+ unsigned short chunk;
+ unsigned short border;
BUG_ON(len >= EXT4_BLOCKS_PER_GROUP(sb));
@@ -829,7 +846,8 @@ ext4_mb_mark_free_simple(struct super_bl
/* mark multiblock chunks only */
grp->bb_counters[min]++;
if (min > 0)
- mb_clear_bit(first >> min, buddy + sbi->s_mb_offsets[min]);
+ mb_clear_bit(first >> min,
+ buddy + sbi->s_mb_offsets[min]);
len -= chunk;
first += chunk;
@@ -842,8 +860,11 @@ ext4_mb_generate_buddy(struct super_bloc
{
struct ext4_group_info *grp = EXT4_GROUP_INFO(sb, group);
unsigned short max = EXT4_BLOCKS_PER_GROUP(sb);
- unsigned short i = 0, first, len;
- unsigned free = 0, fragments = 0;
+ unsigned short i = 0;
+ unsigned short first;
+ unsigned short len;
+ unsigned free = 0;
+ unsigned fragments = 0;
unsigned long long period = get_cycles();
/* initialize buddy from bitmap which is aggregation
@@ -882,13 +903,19 @@ ext4_mb_generate_buddy(struct super_bloc
static int ext4_mb_init_cache(struct page *page, char *incore)
{
- int blocksize, blocks_per_page, groups_per_page;
- int err = 0, i, first_group, first_block;
+ int blocksize;
+ int blocks_per_page;
+ int groups_per_page;
+ int err = 0;
+ int i;
+ int first_group;
+ int first_block;
struct super_block *sb;
struct buffer_head *bhs;
struct buffer_head **bh;
struct inode *inode;
- char *data, *bitmap;
+ char *data;
+ char *bitmap;
mb_debug("init page %lu\n", page->index);
@@ -916,7 +943,7 @@ static int ext4_mb_init_cache(struct pag
/* read all groups the page covers into the cache */
for (i = 0; i < groups_per_page; i++) {
- struct ext4_group_desc * desc;
+ struct ext4_group_desc *desc;
if (first_group + i >= EXT4_SB(sb)->s_groups_count)
break;
@@ -987,7 +1014,7 @@ static int ext4_mb_init_cache(struct pag
ext4_lock_group(sb, group);
memcpy(data, bitmap, blocksize);
- /* mark all preallocated blocks used in in-core bitmap */
+ /* mark all preallocated blks used in in-core bitmap */
ext4_mb_generate_from_pa(sb, data, group);
ext4_unlock_group(sb, group);
@@ -1011,7 +1038,10 @@ static int ext4_mb_load_buddy(struct sup
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct inode *inode = sbi->s_buddy_cache;
- int blocks_per_page, block, pnum, poff;
+ int blocks_per_page;
+ int block;
+ int pnum;
+ int poff;
struct page *page;
mb_debug("load group %u\n", group);
@@ -1159,8 +1189,11 @@ static inline void mb_set_bits(void *bm,
static int mb_free_blocks(struct inode *inode, struct ext4_buddy *e3b,
int first, int count)
{
- int block = 0, max = 0, order;
- void *buddy, *buddy2;
+ int block = 0;
+ int max = 0;
+ int order;
+ void *buddy;
+ void *buddy2;
struct super_block *sb = e3b->bd_sb;
BUG_ON(first + count > (sb->s_blocksize << 3));
@@ -1242,7 +1275,9 @@ static int mb_free_blocks(struct inode *
static int mb_find_extent(struct ext4_buddy *e3b, int order, int block,
int needed, struct ext4_free_extent *ex)
{
- int next = block, max, ord;
+ int next = block;
+ int max;
+ int ord;
void *buddy;
BUG_ON(!ext4_is_group_locked(e3b->bd_sb, e3b->bd_group));
@@ -1273,7 +1308,8 @@ static int mb_find_extent(struct ext4_bu
ex->fe_len -= next;
ex->fe_start += next;
- while (needed > ex->fe_len && (buddy = mb_find_buddy(e3b, order, &max))) {
+ while (needed > ex->fe_len &&
+ (buddy = mb_find_buddy(e3b, order, &max))) {
if (block + 1 >= max)
break;
@@ -1295,7 +1331,10 @@ static int mb_find_extent(struct ext4_bu
static int mb_mark_used(struct ext4_buddy *e3b, struct ext4_free_extent *ex)
{
- int ord, mlen = 0, max = 0, cur;
+ int ord;
+ int mlen = 0;
+ int max = 0;
+ int cur;
int start = ex->fe_start;
int len = ex->fe_len;
unsigned ret = 0;
@@ -1517,7 +1556,9 @@ static int ext4_mb_try_best_found(struct
struct ext4_buddy *e3b)
{
struct ext4_free_extent ex = ac->ac_b_ex;
- int group = ex.fe_group, max, err;
+ int group = ex.fe_group;
+ int max;
+ int err;
BUG_ON(ex.fe_len <= 0);
err = ext4_mb_load_buddy(ac->ac_sb, group, e3b);
@@ -1541,7 +1582,9 @@ static int ext4_mb_try_best_found(struct
static int ext4_mb_find_by_goal(struct ext4_allocation_context *ac,
struct ext4_buddy *e3b)
{
- int group = ac->ac_g_ex.fe_group, max, err;
+ int group = ac->ac_g_ex.fe_group;
+ int max;
+ int err;
struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
struct ext4_super_block *es = sbi->s_es;
struct ext4_free_extent ex;
@@ -1599,7 +1642,9 @@ static void ext4_mb_simple_scan_group(st
struct super_block *sb = ac->ac_sb;
struct ext4_group_info *grp = e3b->bd_info;
void *buddy;
- int i, k, max;
+ int i;
+ int k;
+ int max;
BUG_ON(ac->ac_2order <= 0);
for (i = ac->ac_2order; i <= sb->s_blocksize_bits + 1; i++) {
@@ -1640,7 +1685,8 @@ static void ext4_mb_complex_scan_group(s
struct super_block *sb = ac->ac_sb;
void *bitmap = EXT4_MB_BITMAP(e3b);
struct ext4_free_extent ex;
- int i, free;
+ int i;
+ int free;
free = e3b->bd_info->bb_free;
BUG_ON(free <= 0);
@@ -1678,7 +1724,8 @@ static void ext4_mb_scan_aligned(struct
struct ext4_sb_info *sbi = EXT4_SB(sb);
void *bitmap = EXT4_MB_BITMAP(e3b);
struct ext4_free_extent ex;
- unsigned long i, max;
+ unsigned long i;
+ unsigned long max;
BUG_ON(sbi->s_stripe == 0);
@@ -1707,7 +1754,10 @@ static int ext4_mb_good_group(struct ext
int group, int cr)
{
struct ext4_group_info *grp = EXT4_GROUP_INFO(ac->ac_sb, group);
- unsigned free, fragments, i, bits;
+ unsigned free;
+ unsigned fragments;
+ unsigned i;
+ unsigned bits;
BUG_ON(cr < 0 || cr >= 4);
BUG_ON(EXT4_MB_GRP_NEED_INIT(grp));
@@ -1720,25 +1770,25 @@ static int ext4_mb_good_group(struct ext
return 0;
switch (cr) {
- case 0:
- BUG_ON(ac->ac_2order == 0);
- bits = ac->ac_sb->s_blocksize_bits + 1;
- for (i = ac->ac_2order; i <= bits; i++)
- if (grp->bb_counters[i] > 0)
- return 1;
- break;
- case 1:
- if ((free / fragments) >= ac->ac_g_ex.fe_len)
- return 1;
- break;
- case 2:
- if (free >= ac->ac_g_ex.fe_len)
+ case 0:
+ BUG_ON(ac->ac_2order == 0);
+ bits = ac->ac_sb->s_blocksize_bits + 1;
+ for (i = ac->ac_2order; i <= bits; i++)
+ if (grp->bb_counters[i] > 0)
return 1;
- break;
- case 3:
+ break;
+ case 1:
+ if ((free / fragments) >= ac->ac_g_ex.fe_len)
return 1;
- default:
- BUG();
+ break;
+ case 2:
+ if (free >= ac->ac_g_ex.fe_len)
+ return 1;
+ break;
+ case 3:
+ return 1;
+ default:
+ BUG();
}
return 0;
@@ -1746,7 +1796,10 @@ static int ext4_mb_good_group(struct ext
int ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
{
- int group, i, cr, err = 0;
+ int group;
+ int i;
+ int cr;
+ int err = 0;
struct ext4_sb_info *sbi;
struct super_block *sb;
struct ext4_buddy e3b;
@@ -1910,7 +1963,8 @@ static void *ext4_mb_seq_history_start(s
return hs;
}
-static void *ext4_mb_seq_history_next(struct seq_file *seq, void *v, loff_t *pos)
+static void *ext4_mb_seq_history_next(struct seq_file *seq, void *v,
+ loff_t *pos)
{
struct ext4_mb_proc_session *s = seq->private;
struct ext4_mb_history *hs = v;
@@ -1990,7 +2044,8 @@ static int ext4_mb_seq_history_open(stru
struct super_block *sb = PDE(inode)->data;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_mb_proc_session *s;
- int rc, size;
+ int rc;
+ int size;
s = kmalloc(sizeof(*s), GFP_KERNEL);
if (s == NULL)
@@ -2096,7 +2151,8 @@ static int ext4_mb_seq_groups_show(struc
{
struct super_block *sb = seq->private;
long group = (long) v;
- int i, err;
+ int i;
+ int err;
struct ext4_buddy e3b;
struct sg {
struct ext4_group_info info;
@@ -2174,8 +2230,7 @@ static void ext4_mb_history_release(stru
remove_proc_entry("mb_groups", sbi->s_mb_proc);
remove_proc_entry("mb_history", sbi->s_mb_proc);
- if (sbi->s_mb_history)
- kfree(sbi->s_mb_history);
+ kfree(sbi->s_mb_history);
}
static void ext4_mb_history_init(struct super_block *sb)
@@ -2248,7 +2303,10 @@ ext4_mb_store_history(struct ext4_alloca
int ext4_mb_init_backend(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- int i, j, len, metalen;
+ int i;
+ int j;
+ int len;
+ int metalen;
int num_meta_group_infos =
(sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) >>
EXT4_DESC_PER_BLOCK_BITS(sb);
@@ -2292,7 +2350,7 @@ int ext4_mb_init_backend(struct super_bl
len = sizeof(struct ext4_group_info);
len += sizeof(unsigned short) * (sb->s_blocksize_bits + 2);
for (i = 0; i < sbi->s_groups_count; i++) {
- struct ext4_group_desc * desc;
+ struct ext4_group_desc *desc;
meta_group_info =
sbi->s_group_info[i >> EXT4_DESC_PER_BLOCK_BITS(sb)];
@@ -2306,7 +2364,8 @@ int ext4_mb_init_backend(struct super_bl
}
desc = ext4_get_group_desc(sb, i, NULL);
if (desc == NULL) {
- printk(KERN_ERR"EXT4-fs: can't read descriptor %u\n",i);
+ printk(KERN_ERR
+ "EXT4-fs: can't read descriptor %u\n", i);
goto err_freebuddy;
}
memset(meta_group_info[j], 0, len);
@@ -2356,7 +2415,9 @@ err_freesgi:
int ext4_mb_init(struct super_block *sb, int needs_recovery)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- unsigned i, offset, max;
+ unsigned i;
+ unsigned offset;
+ unsigned max;
if (!test_opt(sb, MBALLOC))
return 0;
@@ -2391,7 +2452,8 @@ int ext4_mb_init(struct super_block *sb,
} while (i <= sb->s_blocksize_bits + 1);
/* init file for buddy data */
- if ((i = ext4_mb_init_backend(sb))) {
+ i = ext4_mb_init_backend(sb);
+ if (i) {
clear_opt(sbi->s_mount_opt, MBALLOC);
kfree(sbi->s_mb_offsets);
kfree(sbi->s_mb_maxs);
@@ -2411,7 +2473,8 @@ int ext4_mb_init(struct super_block *sb,
sbi->s_mb_order2_reqs = MB_DEFAULT_ORDER2_REQS;
sbi->s_mb_history_filter = EXT4_MB_HISTORY_DEFAULT;
- i = sbi->s_mb_prealloc_table_size = 7;
+ sbi->s_mb_prealloc_table_size = 7;
+ i = sbi->s_mb_prealloc_table_size;
sbi->s_mb_prealloc_table = kmalloc(sizeof(unsigned long) * i,
GFP_NOFS);
if (sbi->s_mb_prealloc_table == NULL) {
@@ -2477,7 +2540,8 @@ void ext4_mb_cleanup_pa(struct ext4_grou
int ext4_mb_release(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- int i, num_meta_group_infos;
+ int i;
+ int num_meta_group_infos;
if (!test_opt(sb, MBALLOC))
return 0;
@@ -2507,34 +2571,35 @@ int ext4_mb_release(struct super_block *
kfree(sbi->s_group_info[i]);
kfree(sbi->s_group_info);
}
- if (sbi->s_mb_offsets)
- kfree(sbi->s_mb_offsets);
- if (sbi->s_mb_maxs)
- kfree(sbi->s_mb_maxs);
+ kfree(sbi->s_mb_offsets);
+ kfree(sbi->s_mb_maxs);
if (sbi->s_buddy_cache)
iput(sbi->s_buddy_cache);
if (sbi->s_mb_stats) {
- printk("EXT4-fs: mballoc: %u blocks %u reqs (%u success)\n",
+ printk(KERN_INFO
+ "EXT4-fs: mballoc: %u blocks %u reqs (%u success)\n",
atomic_read(&sbi->s_bal_allocated),
atomic_read(&sbi->s_bal_reqs),
atomic_read(&sbi->s_bal_success));
- printk("EXT4-fs: mballoc: %u extents scanned, %u goal hits, "
+ printk(KERN_INFO
+ "EXT4-fs: mballoc: %u extents scanned, %u goal hits, "
"%u 2^N hits, %u breaks, %u lost\n",
atomic_read(&sbi->s_bal_ex_scanned),
atomic_read(&sbi->s_bal_goals),
atomic_read(&sbi->s_bal_2orders),
atomic_read(&sbi->s_bal_breaks),
atomic_read(&sbi->s_mb_lost_chunks));
- printk("EXT4-fs: mballoc: %lu generated and it took %Lu\n",
+ printk(KERN_INFO
+ "EXT4-fs: mballoc: %lu generated and it took %Lu\n",
sbi->s_mb_buddies_generated++,
sbi->s_mb_generation_time);
- printk("EXT4-fs: mballoc: %u preallocated, %u discarded\n",
+ printk(KERN_INFO
+ "EXT4-fs: mballoc: %u preallocated, %u discarded\n",
atomic_read(&sbi->s_mb_preallocated),
atomic_read(&sbi->s_mb_discarded));
}
- if (sbi->s_locality_groups)
- kfree(sbi->s_locality_groups);
+ kfree(sbi->s_locality_groups);
ext4_mb_history_release(sb);
ext4_mb_destroy_per_dev_proc(sb);
@@ -2545,7 +2610,10 @@ int ext4_mb_release(struct super_block *
void ext4_mb_free_committed_blocks(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- int err, i, count = 0, count2 = 0;
+ int err;
+ int i;
+ int count = 0;
+ int count2 = 0;
struct ext4_free_metadata *md;
struct ext4_buddy e3b;
@@ -2612,7 +2680,9 @@ static int ext4_mb_read_prealloc_table(c
off_t off, int count, int *eof, void *data)
{
struct ext4_sb_info *sbi = data;
- int len = 0, i;
+ int len = 0;
+ int i;
+
*eof = 1;
if (off != 0)
return 0;
@@ -2628,10 +2698,14 @@ static int ext4_mb_write_prealloc_table(
const char *buf, unsigned long cnt, void *data)
{
struct ext4_sb_info *sbi = data;
- unsigned long value, prev = 0;
- char str[128], *cur, *end;
+ unsigned long value;
+ unsigned long prev = 0;
+ char str[128];
+ char *cur;
+ char *end;
unsigned long *new_table;
- int num = 0, i = 0;
+ int num = 0;
+ int i = 0;
if (cnt >= sizeof(str))
return -EINVAL;
@@ -2715,6 +2789,7 @@ MB_PROC_VALUE_READ(group_prealloc);
MB_PROC_VALUE_WRITE(group_prealloc);
#define MB_PROC_HANDLER(name, var) \
+do { \
proc = create_proc_entry(name, mode, sbi->s_mb_proc); \
if (proc == NULL) { \
printk(KERN_ERR "EXT4-fs: can't to create %s\n", name); \
@@ -2722,7 +2797,8 @@ MB_PROC_VALUE_WRITE(group_prealloc);
} \
proc->data = sbi; \
proc->read_proc = ext4_mb_read_##var ; \
- proc->write_proc = ext4_mb_write_##var;
+ proc->write_proc = ext4_mb_write_##var; \
+} while (0)
int ext4_mb_init_per_dev_proc(struct super_block *sb)
{
@@ -2812,7 +2888,8 @@ void exit_ext4_proc(void)
* Check quota and mark choosed space (ac->ac_b_ex) non-free in bitmaps
* Returns 0 if success or error code
*/
-int ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac, handle_t *handle)
+int ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
+ handle_t *handle)
{
struct buffer_head *bitmap_bh = NULL;
struct ext4_super_block *es;
@@ -2871,7 +2948,8 @@ int ext4_mb_mark_diskspace_used(struct e
}
}
#endif
- mb_set_bits(bitmap_bh->b_data, ac->ac_b_ex.fe_start, ac->ac_b_ex.fe_len);
+ mb_set_bits(bitmap_bh->b_data, ac->ac_b_ex.fe_start,
+ ac->ac_b_ex.fe_len);
spin_lock(sb_bgl_lock(sbi, ac->ac_b_ex.fe_group));
gdp->bg_free_blocks_count =
@@ -2915,9 +2993,15 @@ void ext4_mb_normalize_request(struct ex
{
struct ext4_inode_info *ei = EXT4_I(ac->ac_inode);
struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
- loff_t start, end, size, orig_size, orig_start, wind;
+ loff_t start;
+ loff_t end;
+ loff_t size;
+ loff_t orig_size;
+ loff_t orig_start;
+ loff_t wind;
struct list_head *cur;
- int bsbits, i;
+ int bsbits;
+ int i;
/* do normalize only data requests, metadata requests
do not need preallocation */
@@ -2965,7 +3049,8 @@ void ext4_mb_normalize_request(struct ex
do_div(start, wind);
start = start * wind;
}
- orig_size = size = wind;
+ size = wind;
+ orig_size = size;
orig_start = start;
/* don't cover already allocated blocks in selected range */
@@ -3042,7 +3127,7 @@ void ext4_mb_normalize_request(struct ex
if (start + size <= ac->ac_o_ex.fe_logical &&
start > ac->ac_o_ex.fe_logical) {
- printk("start %lu, size %lu, fe_logical %lu\n",
+ printk(KERN_ERR "start %lu, size %lu, fe_logical %lu\n",
(unsigned long) start, (unsigned long) size,
(unsigned long) ac->ac_o_ex.fe_logical);
}
@@ -3103,7 +3188,8 @@ void ext4_mb_collect_stats(struct ext4_a
void ext4_mb_use_inode_pa(struct ext4_allocation_context *ac,
struct ext4_prealloc_space *pa)
{
- unsigned long start, len;
+ unsigned long start;
+ unsigned long len;
/* found preallocated blocks, use them */
start = pa->pa_pstart + (ac->ac_o_ex.fe_logical - pa->pa_lstart);
@@ -3223,9 +3309,11 @@ void ext4_mb_generate_from_pa(struct sup
struct list_head *cur;
unsigned long groupnr;
ext4_grpblk_t start;
- int preallocated = 0, count = 0, len;
+ int preallocated = 0;
+ int count = 0;
+ int len;
- /* all form of preallocation discards first load group,
+ /* all form of preallocation discards first load group,
* so the only competing code is preallocation use.
* we don't need any locking here
* notice we do NOT ignore preallocations with pa_deleted
@@ -3236,7 +3324,8 @@ void ext4_mb_generate_from_pa(struct sup
list_for_each_rcu(cur, &grp->bb_prealloc_list) {
pa = list_entry(cur, struct ext4_prealloc_space, pa_group_list);
spin_lock(&pa->pa_lock);
- ext4_get_group_no_and_offset(sb, pa->pa_pstart, &groupnr, &start);
+ ext4_get_group_no_and_offset(sb, pa->pa_pstart,
+ &groupnr, &start);
len = pa->pa_len;
spin_unlock(&pa->pa_lock);
BUG_ON(groupnr != group);
@@ -3247,7 +3336,7 @@ void ext4_mb_generate_from_pa(struct sup
mb_debug("prellocated %u for group %u\n", preallocated, group);
}
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,5)
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 5)
static void ext4_mb_pa_callback(struct rcu_head *head)
{
struct ext4_prealloc_space *pa;
@@ -3333,7 +3422,10 @@ int ext4_mb_new_inode_pa(struct ext4_all
return -ENOMEM;
if (ac->ac_b_ex.fe_len < ac->ac_g_ex.fe_len) {
- int winl, wins, win, offs;
+ int winl;
+ int wins;
+ int win;
+ int offs;
/* we can't allocate as much as normalizer wants.
* so, found space must get proper lstart
@@ -3480,10 +3572,13 @@ int ext4_mb_release_inode_pa(struct ext4
struct ext4_allocation_context ac;
struct super_block *sb = e3b->bd_sb;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- unsigned long end, next, group;
+ unsigned long end;
+ unsigned long next;
+ unsigned long group;
ext4_grpblk_t bit;
sector_t start;
- int err = 0, free = 0;
+ int err = 0;
+ int free = 0;
BUG_ON(pa->pa_deleted == 0);
ext4_get_group_no_and_offset(sb, pa->pa_pstart, &group, &bit);
@@ -3518,11 +3613,11 @@ int ext4_mb_release_inode_pa(struct ext4
bit = next + 1;
}
if (free != pa->pa_free) {
- printk("pa %p: logic %lu, phys. %lu, len %lu\n",
+ printk(KERN_ERR "pa %p: logic %lu, phys. %lu, len %lu\n",
pa, (unsigned long) pa->pa_lstart,
(unsigned long) pa->pa_pstart,
(unsigned long) pa->pa_len);
- printk("free %u, pa_free %u\n", free, pa->pa_free);
+ printk(KERN_ERR "free %u, pa_free %u\n", free, pa->pa_free);
}
BUG_ON(free != pa->pa_free);
atomic_add(free, &sbi->s_mb_discarded);
@@ -3574,7 +3669,9 @@ int ext4_mb_discard_group_preallocations
struct ext4_prealloc_space *pa, *tmp;
struct list_head list;
struct ext4_buddy e3b;
- int err, busy, free = 0;
+ int err;
+ int busy;
+ int free = 0;
mb_debug("discard preallocation for group %lu\n", group);
@@ -3600,11 +3697,12 @@ int ext4_mb_discard_group_preallocations
repeat:
busy = 0;
ext4_lock_group(sb, group);
- list_for_each_entry_safe (pa, tmp, &grp->bb_prealloc_list, pa_group_list) {
+ list_for_each_entry_safe(pa, tmp,
+ &grp->bb_prealloc_list, pa_group_list) {
spin_lock(&pa->pa_lock);
if (atomic_read(&pa->pa_count)) {
spin_unlock(&pa->pa_lock);
- printk("uh! busy PA\n");
+ printk(KERN_ERR "uh! busy PA\n");
dump_stack();
busy = 1;
continue;
@@ -3698,7 +3796,7 @@ repeat:
* use preallocation while we're discarding it */
spin_unlock(&pa->pa_lock);
spin_unlock(&ei->i_prealloc_lock);
- printk("uh-oh! used pa while discarding\n");
+ printk(KERN_ERR "uh-oh! used pa while discarding\n");
dump_stack();
current->state = TASK_UNINTERRUPTIBLE;
schedule_timeout(HZ);
@@ -3729,7 +3827,7 @@ repeat:
* add a flag to force wait only in case
* of ->clear_inode(), but not in case of
* regular truncate */
- printk("uh-oh! some one just deleted it\n");
+ printk(KERN_ERR "uh-oh! some one just deleted it\n");
dump_stack();
current->state = TASK_UNINTERRUPTIBLE;
schedule_timeout(HZ);
@@ -3771,7 +3869,8 @@ repeat:
* XXX: at the moment, truncate (which is the only way to free blocks)
* discards all preallocations
*/
-void ext4_mb_return_to_preallocation(struct inode *inode, struct ext4_buddy *e3b,
+void ext4_mb_return_to_preallocation(struct inode *inode,
+ struct ext4_buddy *e3b,
sector_t block, int count)
{
BUG_ON(!list_empty(&EXT4_I(inode)->i_prealloc_list));
@@ -3796,7 +3895,7 @@ void ext4_mb_show_ac(struct ext4_allocat
ac->ac_criteria);
printk(KERN_ERR "EXT4-fs: %lu scanned, %d found\n", ac->ac_ex_scanned,
ac->ac_found);
- printk("EXT4-fs: groups: ");
+ printk(KERN_ERR "EXT4-fs: groups: ");
for (i = 0; i < EXT4_SB(sb)->s_groups_count; i++) {
struct ext4_group_info *grp = EXT4_GROUP_INFO(sb, i);
struct ext4_prealloc_space *pa;
@@ -3806,17 +3905,19 @@ void ext4_mb_show_ac(struct ext4_allocat
pa = list_entry(cur, struct ext4_prealloc_space,
pa_group_list);
spin_lock(&pa->pa_lock);
- ext4_get_group_no_and_offset(sb, pa->pa_pstart, NULL, &start);
+ ext4_get_group_no_and_offset(sb, pa->pa_pstart,
+ NULL, &start);
spin_unlock(&pa->pa_lock);
- printk("PA:%u:%lu:%u ", i, start, pa->pa_len);
+ printk(KERN_ERR "PA:%u:%lu:%u ", i, start, pa->pa_len);
}
if (grp->bb_free == 0)
continue;
- printk("%d: %d/%d ", i, grp->bb_free, grp->bb_fragments);
+ printk(KERN_ERR "%d: %d/%d ",
+ i, grp->bb_free, grp->bb_fragments);
}
- printk("\n");
- //dump_stack();
+ printk(KERN_ERR "\n");
+ /* dump_stack(); */
#endif
}
@@ -3854,7 +3955,9 @@ int ext4_mb_initialize_context(struct ex
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, len, goal;
+ unsigned long group;
+ unsigned long len;
+ unsigned long goal;
ext4_grpblk_t block;
/* we can't allocate > group size */
@@ -3941,7 +4044,9 @@ int ext4_mb_release_context(struct ext4_
int ext4_mb_discard_preallocations(struct super_block *sb, int needed)
{
- int i, ret, freed = 0;
+ int i;
+ int ret;
+ int freed = 0;
for (i = 0; i < EXT4_SB(sb)->s_groups_count && needed > 0; i++) {
ret = ext4_mb_discard_group_preallocations(sb, i, needed);
@@ -3964,7 +4069,8 @@ unsigned long ext4_mb_new_blocks(handle_
struct ext4_sb_info *sbi;
struct super_block *sb;
unsigned long block = 0;
- int freed, inquota;
+ int freed;
+ int inquota;
sb = ar->inode->i_sb;
sbi = EXT4_SB(sb);
@@ -3978,7 +4084,7 @@ unsigned long ext4_mb_new_blocks(handle_
ar->len = 1;
#endif
block = ext4_new_blocks_old(handle, ar->inode, ar->goal,
- &(ar->len), errp);
+ &(ar->len), errp);
return block;
}
@@ -3994,7 +4100,8 @@ unsigned long ext4_mb_new_blocks(handle_
ext4_mb_poll_new_transaction(sb, handle);
- if ((*errp = ext4_mb_initialize_context(&ac, ar))) {
+ *errp = ext4_mb_initialize_context(&ac, ar);
+ if (*errp) {
ar->len = 0;
goto out;
}
@@ -4151,7 +4258,8 @@ void ext4_mb_free_blocks(handle_t *handl
unsigned long block_group;
struct ext4_sb_info *sbi;
struct ext4_buddy e3b;
- int err = 0, ret;
+ int err = 0;
+ int ret;
*freed = 0;
@@ -4162,7 +4270,7 @@ void ext4_mb_free_blocks(handle_t *handl
if (block < le32_to_cpu(es->s_first_data_block) ||
block + count < block ||
block + count > le32_to_cpu(es->s_blocks_count)) {
- ext4_error (sb, __FUNCTION__,
+ ext4_error(sb, __FUNCTION__,
"Freeing blocks not in datazone - "
"block = %lu, count = %lu", block, count);
goto error_return;
@@ -4190,15 +4298,15 @@ do_more:
bitmap_bh = read_block_bitmap(sb, block_group);
if (!bitmap_bh)
goto error_return;
- gdp = ext4_get_group_desc (sb, block_group, &gd_bh);
+ gdp = ext4_get_group_desc(sb, block_group, &gd_bh);
if (!gdp)
goto error_return;
- if (in_range (le32_to_cpu(gdp->bg_block_bitmap), block, count) ||
- in_range (le32_to_cpu(gdp->bg_inode_bitmap), block, count) ||
- in_range (block, le32_to_cpu(gdp->bg_inode_table),
+ if (in_range(le32_to_cpu(gdp->bg_block_bitmap), block, count) ||
+ in_range(le32_to_cpu(gdp->bg_inode_bitmap), block, count) ||
+ in_range(block, le32_to_cpu(gdp->bg_inode_table),
EXT4_SB(sb)->s_itb_per_group) ||
- in_range (block + count - 1, le32_to_cpu(gdp->bg_inode_table),
+ in_range(block + count - 1, le32_to_cpu(gdp->bg_inode_table),
EXT4_SB(sb)->s_itb_per_group))
ext4_error(sb, __FUNCTION__,
"Freeing blocks in system zone - "
-
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