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ext4: remove unused function argument 'order' in mb_find_extent()

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All the routines call mb_find_extent are setting argument 'order' to 0
just like:

	mb_find_extent(e4b, 0, ex.fe_start, ex.fe_len, &ex);

therefore the useless argument should be removed.

Signed-off-by: Robin Dong <sanbai@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Robin Dong 2012-08-17 10:02:17 -04:00 committed by Theodore Ts'o
parent cc6eb18d68
commit 15c006a22f
1 changed files with 11 additions and 14 deletions
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25
fs/ext4/mballoc.c
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@ -1338,17 +1338,17 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
mb_check_buddy(e4b);
}
static int mb_find_extent(struct ext4_buddy *e4b, int order, int block,
static int mb_find_extent(struct ext4_buddy *e4b, int block,
int needed, struct ext4_free_extent *ex)
{
int next = block;
int max;
int max, order;
void *buddy;
assert_spin_locked(ext4_group_lock_ptr(e4b->bd_sb, e4b->bd_group));
BUG_ON(ex == NULL);
buddy = mb_find_buddy(e4b, order, &max);
buddy = mb_find_buddy(e4b, 0, &max);
BUG_ON(buddy == NULL);
BUG_ON(block >= max);
if (mb_test_bit(block, buddy)) {
@ -1358,12 +1358,9 @@ static int mb_find_extent(struct ext4_buddy *e4b, int order, int block,
return 0;
}
/* FIXME dorp order completely ? */
if (likely(order == 0)) {
/* find actual order */
order = mb_find_order_for_block(e4b, block);
block = block >> order;
}
/* find actual order */
order = mb_find_order_for_block(e4b, block);
block = block >> order;
ex->fe_len = 1 << order;
ex->fe_start = block << order;
@ -1549,7 +1546,7 @@ static void ext4_mb_check_limits(struct ext4_allocation_context *ac,
/* recheck chunk's availability - we don't know
* when it was found (within this lock-unlock
* period or not) */
max = mb_find_extent(e4b, 0, bex->fe_start, gex->fe_len, &ex);
max = mb_find_extent(e4b, bex->fe_start, gex->fe_len, &ex);
if (max >= gex->fe_len) {
ext4_mb_use_best_found(ac, e4b);
return;
@ -1641,7 +1638,7 @@ int ext4_mb_try_best_found(struct ext4_allocation_context *ac,
return err;
ext4_lock_group(ac->ac_sb, group);
max = mb_find_extent(e4b, 0, ex.fe_start, ex.fe_len, &ex);
max = mb_find_extent(e4b, ex.fe_start, ex.fe_len, &ex);
if (max > 0) {
ac->ac_b_ex = ex;
@ -1672,7 +1669,7 @@ int ext4_mb_find_by_goal(struct ext4_allocation_context *ac,
return err;
ext4_lock_group(ac->ac_sb, group);
max = mb_find_extent(e4b, 0, ac->ac_g_ex.fe_start,
max = mb_find_extent(e4b, ac->ac_g_ex.fe_start,
ac->ac_g_ex.fe_len, &ex);
if (max >= ac->ac_g_ex.fe_len && ac->ac_g_ex.fe_len == sbi->s_stripe) {
@ -1788,7 +1785,7 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac,
break;
}
mb_find_extent(e4b, 0, i, ac->ac_g_ex.fe_len, &ex);
mb_find_extent(e4b, i, ac->ac_g_ex.fe_len, &ex);
BUG_ON(ex.fe_len <= 0);
if (free < ex.fe_len) {
ext4_grp_locked_error(sb, e4b->bd_group, 0, 0,
@ -1840,7 +1837,7 @@ void ext4_mb_scan_aligned(struct ext4_allocation_context *ac,
while (i < EXT4_CLUSTERS_PER_GROUP(sb)) {
if (!mb_test_bit(i, bitmap)) {
max = mb_find_extent(e4b, 0, i, sbi->s_stripe, &ex);
max = mb_find_extent(e4b, i, sbi->s_stripe, &ex);
if (max >= sbi->s_stripe) {
ac->ac_found++;
ac->ac_b_ex = ex;