.29 patch

diff --git a/queue-2.6.29/dm-sysfs-skip-output-when-device-is-being-destroyed.patch b/queue-2.6.29/dm-sysfs-skip-output-when-device-is-being-destroyed.patch
new file mode 100644 (file)
index 0000000..4f88803
--- /dev/null
+++ b/queue-2.6.29/dm-sysfs-skip-output-when-device-is-being-destroyed.patch
@@ -0,0 +1,36 @@
+From 4d89b7b4e4726893453d0fb4ddbb5b3e16353994 Mon Sep 17 00:00:00 2001
+From: Milan Broz <mbroz@redhat.com>
+Date: Mon, 22 Jun 2009 10:12:11 +0100
+Subject: dm: sysfs skip output when device is being destroyed
+
+From: Milan Broz <mbroz@redhat.com>
+
+commit 4d89b7b4e4726893453d0fb4ddbb5b3e16353994 upstream.
+
+Do not process sysfs attributes when device is being destroyed.
+
+Otherwise code can cause
+  BUG_ON(test_bit(DMF_FREEING, &md->flags));
+in dm_put() call.
+
+Signed-off-by: Milan Broz <mbroz@redhat.com>
+Signed-off-by: Alasdair G Kergon <agk@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
+
+---
+ drivers/md/dm.c |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -1728,6 +1728,10 @@ struct mapped_device *dm_get_from_kobjec
+       if (&md->kobj != kobj)
+               return NULL;
+ 
++      if (test_bit(DMF_FREEING, &md->flags) ||
++          test_bit(DMF_DELETING, &md->flags))
++              return NULL;
++
+       dm_get(md);
+       return md;
+ }

diff --git a/queue-2.6.29/series b/queue-2.6.29/series
index 9a7bcc5e6fdb3bf0a20221f08f1489ad96d822cb..4eeabe66b755dd002c62c2dfacdf23e06aed371e 100644 (file)
--- a/queue-2.6.29/series
+++ b/queue-2.6.29/series
@@ -34,3 +34,4 @@ sound-seq_midi_event-fix-decoding-of-rpn-events.patch
 mm-fix-handling-of-pagesets-for-downed-cpus.patch
 dm-mpath-validate-table-argument-count.patch
 dm-mpath-validate-hw_handler-argument-count.patch
+dm-sysfs-skip-output-when-device-is-being-destroyed.patch