dm: sysfs skip output when device is being destroyed
commit57b70321247d5decb480a8344c29ab5813901790
authorMilan Broz <mbroz@redhat.com>
Mon, 22 Jun 2009 09:12:11 +0000 (22 10:12 +0100)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 2 Jul 2009 23:40:59 +0000 (2 16:40 -0700)
tree67b62909056407b9b0f12ed894520509f82ef0b3
parent85e05eaba5840385843fe61d8db191be84fe3ac6
dm: sysfs skip output when device is being destroyed

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