Ian Campbell a144ff09bc xen: Avoid allocations causing swap activity on the resume path ... Avoid allocations causing swap activity on the resume path by preventing the allocations from doing IO and allowing them to access the emergency pools. These paths are used when a frontend device is trying to connect to its backend driver over Xenbus. These reconnections are triggered on demand by IO, so by definition there is already IO underway, and further IO would naturally deadlock. On resume, this path is triggered when the running system tries to continue using its devices. If it cannot then the resume will fail; to try to avoid this we let it dip into the emergency pools. [ linux-2.6.18-xen changesets e8b49cfbdac, fdb998e79aba ] Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>		2008-07-03 13:21:13 +02:00
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Makefile	xen: add the Xenbus sysfs and virtual device hotplug driver	2007-07-18 08:47:45 -07:00
xenbus_client.c	xen: Avoid allocations causing swap activity on the resume path	2008-07-03 13:21:13 +02:00
xenbus_comms.c	xen: add the Xenbus sysfs and virtual device hotplug driver	2007-07-18 08:47:45 -07:00
xenbus_comms.h	xen: add the Xenbus sysfs and virtual device hotplug driver	2007-07-18 08:47:45 -07:00
xenbus_probe.c	xen: Module autoprobing support for frontend drivers	2008-04-24 23:57:33 +02:00
xenbus_probe.h	xen: add the Xenbus sysfs and virtual device hotplug driver	2007-07-18 08:47:45 -07:00
xenbus_xs.c	xen: Avoid allocations causing swap activity on the resume path	2008-07-03 13:21:13 +02:00