Jan Kara 5acda9d12d bdi: avoid oops on device removal ... 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> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-04-03 16:20:49 -07:00
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acpi	More ACPI and power management updates for 3.15-rc1	2014-04-02 14:10:21 -07:00
asm-generic	Devicetree changes for v3.15	2014-04-02 14:27:15 -07:00
clocksource	…
crypto	…
drm	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-04-02 16:23:38 -07:00
dt-bindings	Char/Misc driver patches for 3.15-rc1	2014-04-01 16:13:21 -07:00
keys	…
kvm	…
linux	bdi: avoid oops on device removal	2014-04-03 16:20:49 -07:00
math-emu	…
media	…
memory	…
misc	…
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-04-02 20:53:45 -07:00
pcmcia	…
ras	…
rdma	…
rxrpc	…
scsi	SCSI misc on 20140401	2014-04-01 18:49:04 -07:00
sound	…
target	…
trace	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-04-02 20:53:45 -07:00
uapi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-04-02 20:53:45 -07:00
video	…
xen	…
Kbuild	…