The patch titled
Subject: net/core: apply pm_runtime_set_memalloc_noio on network devices
has been added to the -mm tree. Its filename is
net-core-apply-pm_runtime_set_memalloc_noio-on-network-devices.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Ming Lei <ming.lei@xxxxxxxxxxxxx>
Subject: net/core: apply pm_runtime_set_memalloc_noio on network devices
Deadlock might be caused by allocating memory with GFP_KERNEL in
runtime_resume and runtime_suspend callback of network devices in iSCSI
situation, so mark network devices and its ancestor as 'memalloc_noio'
with the introduced pm_runtime_set_memalloc_noio().
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Cc: David Decotigny <david.decotigny@xxxxxxxxxx>
Cc: Tom Herbert <therbert@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Cc: Oliver Neukum <oneukum@xxxxxxx>
Cc: Jiri Kosina <jiri.kosina@xxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
net/core/net-sysfs.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN net/core/net-sysfs.c~net-core-apply-pm_runtime_set_memalloc_noio-on-network-devices net/core/net-sysfs.c
--- a/net/core/net-sysfs.c~net-core-apply-pm_runtime_set_memalloc_noio-on-network-devices
+++ a/net/core/net-sysfs.c
@@ -21,6 +21,7 @@
#include <linux/vmalloc.h>
#include <linux/export.h>
#include <linux/jiffies.h>
+#include <linux/pm_runtime.h>
#include "net-sysfs.h"
@@ -1257,6 +1258,8 @@ void netdev_unregister_kobject(struct ne
remove_queue_kobjects(net);
+ pm_runtime_set_memalloc_noio(dev, false);
+
device_del(dev);
}
@@ -1301,6 +1304,8 @@ int netdev_register_kobject(struct net_d
return error;
}
+ pm_runtime_set_memalloc_noio(dev, true);
+
return error;
}
_
Patches currently in -mm which might be from ming.lei@xxxxxxxxxxxxx are
origin.patch
linux-next.patch
mm-teach-mm-by-current-context-info-to-not-do-i-o-during-memory-allocation.patch
pm-runtime-introduce-pm_runtime_set_memalloc_noio.patch
block-genhdc-apply-pm_runtime_set_memalloc_noio-on-block-devices.patch
net-core-apply-pm_runtime_set_memalloc_noio-on-network-devices.patch
pm-runtime-force-memory-allocation-with-no-i-o-during-runtime-pm-callbcack.patch
usb-forbid-memory-allocation-with-i-o-during-bus-reset.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
