From: Jing Zhang <zj.barak@xxxxxxxxx>
Date: Sun Mar 21 21:59:35 2010
Cc: Theodore Ts'o <tytso@xxxxxxx>
Cc: Andreas Dilger <adilger@xxxxxxx>
Cc: Dave Kleikamp <shaggy@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Jing Zhang <zj.barak@xxxxxxxxx>
---
--- linux-2.6.32/fs/ext4/mballoc.c 2009-12-03 11:51:22.000000000 +0800
+++ ext4_mm_leak/mballoc3.c 2010-03-21 21:37:18.000000000 +0800
@@ -2360,6 +2360,24 @@ err_freesgi:
return -ENOMEM;
}
+static void ext4_mb_destroy_backend(struct super_block *sb)
+{
+ ext4_group_t ngroups = ext4_get_groups_count(sb);
+ ext4_group_t i;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ int j;
+ int num_meta_group_infos = (ngroups + EXT4_DESC_PER_BLOCK(sb) -1)
+ >> EXT4_DESC_PER_BLOCK_BITS(sb);
+ for (i = 0; i < ngroups; i++)
+ kfree(ext4_get_group_info(sb, i));
+
+ for (j = 0; j < num_meta_group_infos; j++)
+ kfree(sbi->s_group_info[j]);
+
+ kfree(sbi->s_group_info);
+ iput(sbi->s_buddy_cache);
+}
+
int ext4_mb_init(struct super_block *sb, int needs_recovery)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
@@ -2419,6 +2437,7 @@ int ext4_mb_init(struct super_block *sb,
if (sbi->s_locality_groups == NULL) {
kfree(sbi->s_mb_offsets);
kfree(sbi->s_mb_maxs);
+ ext4_mb_destroy_backend(sb);
return -ENOMEM;
}
for_each_possible_cpu(i) {
--
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