[Patch] fix ext2/ext3 memory leak

[Patch] fix ext2/ext3 memory leak

[Heiko Carstens]

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Hi,

the patch below fixes an ext2/ext3 memory leak: the *_fill_super
functions allocate percpu data structures but don't free them in
*_put_super.

Thanks,
Heiko

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Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

diffstat:
 fs/ext2/super.c |    3 +++
 fs/ext3/super.c |    3 +++
 2 files changed, 6 insertions(+)

diff -urN linux-2.6/fs/ext2/super.c linux-2.6-patched/fs/ext2/super.c
--- linux-2.6/fs/ext2/super.c	2004-12-09 17:41:49.000000000 +0100
+++ linux-2.6-patched/fs/ext2/super.c	2004-12-09 17:42:01.000000000 +0100
@@ -122,6 +122,9 @@
 			brelse (sbi->s_group_desc[i]);
 	kfree(sbi->s_group_desc);
 	kfree(sbi->s_debts);
+	percpu_counter_destroy(&sbi->s_freeblocks_counter);
+	percpu_counter_destroy(&sbi->s_freeinodes_counter);
+	percpu_counter_destroy(&sbi->s_dirs_counter);
 	brelse (sbi->s_sbh);
 	sb->s_fs_info = NULL;
 	kfree(sbi);
diff -urN linux-2.6/fs/ext3/super.c linux-2.6-patched/fs/ext3/super.c
--- linux-2.6/fs/ext3/super.c	2004-12-09 17:41:49.000000000 +0100
+++ linux-2.6-patched/fs/ext3/super.c	2004-12-09 17:42:01.000000000 +0100
@@ -400,6 +400,9 @@
 	for (i = 0; i < sbi->s_gdb_count; i++)
 		brelse(sbi->s_group_desc[i]);
 	kfree(sbi->s_group_desc);
+	percpu_counter_destroy(&sbi->s_freeblocks_counter);
+	percpu_counter_destroy(&sbi->s_freeinodes_counter);
+	percpu_counter_destroy(&sbi->s_dirs_counter);
 	brelse(sbi->s_sbh);
 #ifdef CONFIG_QUOTA
 	for (i = 0; i < MAXQUOTAS; i++) {