lkml.org 
[lkml]   [2008]   [Apr]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] mballoc: fix hot spins after err_freebuddy and err_freemeta
ext4_mb_init_backend() has a variable i of type ext4_group_t. which is typedefined
in include/linux/ext4_fs_i.h:34 to unsigned long. Since unsigned, i >= 0 is always
true, so fix hot spins after err_freebuddy and err_freemeta.

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
---
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index ef97f19..afba9b8 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2618,14 +2618,14 @@ static int ext4_mb_init_backend(struct super_block *sb)
return 0;

err_freebuddy:
- while (i >= 0) {
+ do {
kfree(ext4_get_group_info(sb, i));
- i--;
- }
- i = num_meta_group_infos;
+ } while (i-- != 0);
+ i = num_meta_group_infos - 1;
err_freemeta:
- while (--i >= 0)
+ do {
kfree(sbi->s_group_info[i]);
+ } while (i-- != 0);
iput(sbi->s_buddy_cache);
err_freesgi:
kfree(sbi->s_group_info);

\
 
 \ /
  Last update: 2008-04-17 18:11    [W:0.251 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site