This is a note to let you know that I've just added the patch titled
dm: fix idr leak on module removal
to the 2.6.32-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.32.git;a=summary
The filename of the patch is:
dm-fix-idr-leak-on-module-removal.patch
and it can be found in the queue-2.6.32 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.32 longterm
tree,
please let <sta...@kernel.org> know about it.
>From d15b774c2920d55e3d58275c97fbe3adc3afde38 Mon Sep 17 00:00:00 2001
From: Alasdair G Kergon <a...@redhat.com>
Date: Tue, 2 Aug 2011 12:32:01 +0100
Subject: dm: fix idr leak on module removal
From: Alasdair G Kergon <a...@redhat.com>
commit d15b774c2920d55e3d58275c97fbe3adc3afde38 upstream.
Destroy _minor_idr when unloading the core dm module. (Found by kmemleak.)
Signed-off-by: Alasdair G Kergon <a...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
---
drivers/md/dm.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -36,6 +36,8 @@ static const char *_name = DM_NAME;
static unsigned int major = 0;
static unsigned int _major = 0;
+static DEFINE_IDR(_minor_idr);
+
static DEFINE_SPINLOCK(_minor_lock);
/*
* For bio-based dm.
@@ -315,6 +317,12 @@ static void __exit dm_exit(void)
while (i--)
_exits[i]();
+
+ /*
+ * Should be empty by this point.
+ */
+ idr_remove_all(&_minor_idr);
+ idr_destroy(&_minor_idr);
}
/*
@@ -1663,8 +1671,6 @@ static int dm_any_congested(void *conges
/*-----------------------------------------------------------------
* An IDR is used to keep track of allocated minor numbers.
*---------------------------------------------------------------*/
-static DEFINE_IDR(_minor_idr);
-
static void free_minor(int minor)
{
spin_lock(&_minor_lock);
Patches currently in longterm-queue-2.6.32 which might be from a...@redhat.com
are
/home/gregkh/linux/longterm/longterm-queue-2.6.32/queue-2.6.32/dm-fix-idr-leak-on-module-removal.patch
/home/gregkh/linux/longterm/longterm-queue-2.6.32/queue-2.6.32/dm-mpath-fix-potential-null-pointer-in-feature-arg.patch
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