[ 40/68] ext4: convert number of blocks to clusters properly

Greg Kroah-Hartman
2013-04-02T22:14:46Z

From: Lukas Czerner <lczerner@redhat.com>

commit 810da240f221d64bf90020f25941b05b378186fe upstream.

We're using macro EXT4_B2C() to convert number of blocks to number of
clusters for bigalloc file systems. However, we should be using
EXT4_NUM_B2C().

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: CAI Qian <caiqian@redhat.com>
Signed-off-by: Lingzhu Xiang <lxiang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
fs/ext4/balloc.c | 2 +-
fs/ext4/mballoc.c | 8 ++++----
fs/ext4/resize.c | 6 +++---
3 files changed, 8 insertions(+), 8 deletions(-)

--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -600,7 +600,7 @@ ext4_fsblk_t ext4_count_free_clusters(st
brelse(bitmap_bh);
printk(KERN_DEBUG "ext4_count_free_clusters: stored = %llu"
", computed = %llu, %llu\n",
- EXT4_B2C(EXT4_SB(sb), ext4_free_blocks_count(es)),
+ EXT4_NUM_B2C(EXT4_SB(sb), ext4_free_blocks_count(es)),
desc_count, bitmap_count);
return bitmap_count;
#else
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3433,7 +3433,7 @@ ext4_mb_new_inode_pa(struct ext4_allocat
win = offs;

ac->ac_b_ex.fe_logical = ac->ac_o_ex.fe_logical -
- EXT4_B2C(sbi, win);
+ EXT4_NUM_B2C(sbi, win);
BUG_ON(ac->ac_o_ex.fe_logical < ac->ac_b_ex.fe_logical);
BUG_ON(ac->ac_o_ex.fe_len > ac->ac_b_ex.fe_len);
}
@@ -4577,7 +4577,7 @@ do_more:
EXT4_BLOCKS_PER_GROUP(sb);
count -= overflow;
}
- count_clusters = EXT4_B2C(sbi, count);
+ count_clusters = EXT4_NUM_B2C(sbi, count);
bitmap_bh = ext4_read_block_bitmap(sb, block_group);
if (!bitmap_bh) {
err = -EIO;
@@ -4808,11 +4808,11 @@ int ext4_group_add_blocks(handle_t *hand
desc->bg_checksum = ext4_group_desc_csum(sbi, block_group, desc);
ext4_unlock_group(sb, block_group);
percpu_counter_add(&sbi->s_freeclusters_counter,
- EXT4_B2C(sbi, blocks_freed));
+ EXT4_NUM_B2C(sbi, blocks_freed));

if (sbi->s_log_groups_per_flex) {
ext4_group_t flex_group = ext4_flex_group(sbi, block_group);
- atomic_add(EXT4_B2C(sbi, blocks_freed),
+ atomic_add(EXT4_NUM_B2C(sbi, blocks_freed),
&sbi->s_flex_groups[flex_group].free_clusters);
}

--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1112,7 +1112,7 @@ static int ext4_setup_new_descs(handle_t
ext4_inode_bitmap_set(sb, gdp, group_data->inode_bitmap);
ext4_inode_table_set(sb, gdp, group_data->inode_table);
ext4_free_group_clusters_set(sb, gdp,
- EXT4_B2C(sbi, group_data->free_blocks_count));
+ EXT4_NUM_B2C(sbi, group_data->free_blocks_count));
ext4_free_inodes_set(sb, gdp, EXT4_INODES_PER_GROUP(sb));
gdp->bg_flags = cpu_to_le16(*bg_flags);
gdp->bg_checksum = ext4_group_desc_csum(sbi, group, gdp);
@@ -1210,7 +1210,7 @@ static void ext4_update_super(struct sup

/* Update the free space counts */
percpu_counter_add(&sbi->s_freeclusters_counter,
- EXT4_B2C(sbi, free_blocks));
+ EXT4_NUM_B2C(sbi, free_blocks));
percpu_counter_add(&sbi->s_freeinodes_counter,
EXT4_INODES_PER_GROUP(sb) * flex_gd->count);

@@ -1219,7 +1219,7 @@ static void ext4_update_super(struct sup
sbi->s_log_groups_per_flex) {
ext4_group_t flex_group;
flex_group = ext4_flex_group(sbi, group_data[0].group);
- atomic_add(EXT4_B2C(sbi, free_blocks),
+ atomic_add(EXT4_NUM_B2C(sbi, free_blocks),
&sbi->s_flex_groups[flex_group].free_clusters);
atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count,
&sbi->s_flex_groups[flex_group].free_inodes);