Jan Kara 644f766ba0 bdi: avoid oops on device removal ... commit 5acda9d12d upstream. After commit 839a8e8660 ("writeback: replace custom worker pool implementation with unbound workqueue") when device is removed while we are writing to it we crash in bdi_writeback_workfn() -> set_worker_desc() because bdi->dev is NULL. This can happen because even though bdi_unregister() cancels all pending flushing work, nothing really prevents new ones from being queued from balance_dirty_pages() or other places. Fix the problem by clearing BDI_registered bit in bdi_unregister() and checking it before scheduling of any flushing work. Fixes: 839a8e8660 Reviewed-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Cc: Derek Basehore <dbasehore@chromium.org> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-04-22 16:49:21 -07:00
..
acpi	Merge branches 'acpi-pci-pm' and 'acpi-pci-hotplug'	2013-12-31 22:03:37 +01:00
asm-generic	powerpc/thp: Fix crash on mremap	2014-02-13 13:55:44 -08:00
clocksource	drivers: clocksource: add support for ARM architected timer event stream	2013-09-26 09:48:00 +01:00
crypto	crypto: scatterwalk - Use sg_chain_ptr on chain entries	2013-12-09 19:58:52 +08:00
drm	drm/radeon: 0x9649 is SUMO2 not SUMO	2013-12-23 10:03:41 -05:00
dt-bindings	For the 3.13 merge window we have a couple of new drivers for the AMS	2013-11-15 16:37:40 -08:00
keys	KEYS: Separate the kernel signature checking keyring from module signing	2013-09-25 17:17:01 +01:00
kvm
linux	bdi: avoid oops on device removal	2014-04-22 16:49:21 -07:00
math-emu
media	[media] videobuf2: Add support for file access mode flags for DMABUF exporting	2013-12-09 14:50:50 -02:00
memory
misc
net	tcp: syncookies: do not use getnstimeofday()	2014-04-14 06:47:20 -07:00
pcmcia
ras
rdma	IB/core: const'ify inbuf in struct ib_udata	2013-12-16 10:38:28 -08:00
rxrpc
scsi	ore: Fix wrong math in allocation of per device BIO	2014-02-13 13:55:32 -08:00
sound	ALSA: memalloc.h - fix wrong truncation of dma_addr_t	2013-12-10 15:30:46 +01:00
target	iscsi/iser-target: Fix isert_conn->state hung shutdown issues	2014-03-23 21:44:12 -07:00
trace	tracing: Fix array size mismatch in format string	2014-03-31 10:05:14 -07:00
uapi	misc: mic: fix possible signed underflow (undefined behavior) in userspace API	2014-02-22 13:34:57 -08:00
video	fbdev changes for 3.13	2013-11-14 14:44:20 +09:00
xen	xen/pvhvm: If xen_platform_pci=0 is set don't blow up (v4).	2014-02-13 13:55:28 -08:00
Kbuild