Ed Cashin 18d8217bc4 aoe: end barrier bios with EOPNOTSUPP ... BugLink: http://bugzilla.kernel.org/show_bug.cgi?id=13942 Bruno Premont noticed that aoe throws a BUG during umount of an XFS in 2.6.31: [ 5259.349897] aoe: bi_io_vec is NULL [ 5259.349940] ------------[ cut here ]------------ [ 5259.349958] kernel BUG at /usr/src/linux-2.6/drivers/block/aoe/aoeblk.c:177! [ 5259.349990] invalid opcode: 0000 [#1] The bio in question is a barrier. Jens Axboe suggested that such bios need to be recognized and ended with -EOPNOTSUPP by any driver that provides its own ->make_request_fn handler and does not handle barriers. In testing the changes below eliminate the BUG. (Better would be real barrier support, something that Ed says he'll add for later in the .32 cycle. For now, this at least gets rid of a bug with crashing on an empty barrier. Jens) Signed-off-by: Ed L. Cashin <ecashin@coraid.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>		2009-09-14 08:24:52 +02:00
..
aoe.h	aoe: allocate unused request_queue for sysfs	2009-09-09 14:10:18 +02:00
aoeblk.c	aoe: end barrier bios with EOPNOTSUPP	2009-09-14 08:24:52 +02:00
aoechr.c	Driver Core: aoe: add nodename for aoe devices	2009-06-15 21:30:26 -07:00
aoecmd.c	aoe: Remove superfluous clearing of skb fields in new_skb().	2009-05-27 17:09:44 -07:00
aoedev.c	aoe: allocate unused request_queue for sysfs	2009-09-09 14:10:18 +02:00
aoemain.c
aoenet.c	net: convert usage of packet_type to read_mostly	2009-03-10 05:22:43 -07:00
Makefile