On Fri, Mar 01, 2013 at 12:02:34PM -0600, Eric Sandeen wrote:
>
> I was mostly keying off what quota felt was best, I guess.
> I'm not wedded to either approach, it was just a thought.
> So you can take it or leave it. :)
I'll take it, but for the record, there's a reason why I label patches
with "I haven't tested this yet" disclaimers.
For future reference, calling percpu_counter_init() and
percpu_counter_destroy() is not optional --- without them, in your
original patch, the kernel will crash them the first time an ext4 file
system mount is attempted.
No worries though, no harm done --- but it's better if people don't
rely on me to catch bugs before they go into the tree. :-)
- Ted
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 373d46c..1ae5860 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -783,6 +783,7 @@ static void ext4_put_super(struct super_block *sb)
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
+ percpu_counter_destroy(&sbi->s_extent_cache_cnt);
brelse(sbi->s_sbh);
#ifdef CONFIG_QUOTA
for (i = 0; i < MAXQUOTAS; i++)
@@ -3688,6 +3689,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (!err) {
err = percpu_counter_init(&sbi->s_dirtyclusters_counter, 0);
}
+ if (!err) {
+ err = percpu_counter_init(&sbi->s_extent_cache_cnt, 0);
+ }
if (err) {
ext4_msg(sb, KERN_ERR, "insufficient memory");
goto failed_mount3;
@@ -3993,6 +3997,7 @@ failed_mount3:
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
+ percpu_counter_destroy(&sbi->s_extent_cache_cnt);
if (sbi->s_mmp_tsk)
kthread_stop(sbi->s_mmp_tsk);
failed_mount2:
--
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