Alan Stern 25705e3a3e Block: use a freezable workqueue for disk-event polling ... commit 62d3c5439c upstream. This patch (as1519) fixes a bug in the block layer's disk-events polling. The polling is done by a work routine queued on the system_nrt_wq workqueue. Since that workqueue isn't freezable, the polling continues even in the middle of a system sleep transition. Obviously, polling a suspended drive for media changes and such isn't a good thing to do; in the case of USB mass-storage devices it can lead to real problems requiring device resets and even re-enumeration. The patch fixes things by creating a new system-wide, non-reentrant, freezable workqueue and using it for disk-events polling. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-03-19 08:57:59 -07:00
..
acpi	ACPI: Store SRAT table revision	2012-01-25 17:24:57 -08:00
asm-generic	epoll: introduce POLLFREE to flush ->signalfd_wqh before kfree()	2012-02-29 16:34:34 -08:00
crypto
drm	drm: Fix authentication kernel crash	2012-02-03 09:18:52 -08:00
keys	libceph: Create a new key type "ceph".	2011-03-29 12:11:24 -07:00
linux	Block: use a freezable workqueue for disk-event polling	2012-03-19 08:57:59 -07:00
math-emu
media	[media] tuner-core/v4l2-subdev: document that the type field has to be filled in	2011-07-07 15:04:23 -03:00
mtd	UBI: fix minor stylistic issues	2011-04-14 11:34:41 +03:00
net	ipv4: reset flowi parameters on route connect	2012-02-29 16:34:03 -08:00
pcmcia	pcmcia: Make declaration and uses of struct pcmcia_device_id const	2011-05-06 07:46:15 +02:00
rdma	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband	2011-05-26 12:13:57 -07:00
rxrpc	Fix common misspellings	2011-03-31 11:26:23 -03:00
scsi	[SCSI] libsas: Add option for SATA soft reset	2011-05-26 22:49:33 -05:00
sound	ALSA: sb16 - Fix build errors on MIPS and others with 13bit ioctl size	2011-06-30 15:33:57 +02:00
target	target: Set additional sense length field in sense data	2012-01-25 17:25:00 -08:00
trace	writeback: fix dereferencing NULL bdi->dev on trace_writeback_queue	2012-02-20 12:48:11 -08:00
video	OMAPDSS: HDMI: PHY burnout fix	2012-03-12 10:32:59 -07:00
xen	xen/xenbus: Reject replies with payload > XENSTORE_PAYLOAD_MAX.	2012-01-25 17:24:41 -08:00
Kbuild