Patch "cgroup: mark cgroup_get() with __maybe_unused" has been added to the 4.11-stable tree

Patch "cgroup: mark cgroup_get() with __maybe_unused" has been added to the 4.11-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    cgroup: mark cgroup_get() with __maybe_unused

to the 4.11-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     cgroup-mark-cgroup_get-with-__maybe_unused.patch
and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 310b4816a5d8082416b4ab83e5a7b3cb92883a4d Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 1 May 2017 15:24:14 -0400
Subject: cgroup: mark cgroup_get() with __maybe_unused

From: Tejun Heo <tj@kernel.org>

commit 310b4816a5d8082416b4ab83e5a7b3cb92883a4d upstream.

a590b90d472f ("cgroup: fix spurious warnings on cgroup_is_dead() from
cgroup_sk_alloc()") converted most cgroup_get() usages to
cgroup_get_live() leaving cgroup_sk_alloc() the sole user of
cgroup_get().  When !CONFIG_SOCK_CGROUP_DATA, this ends up triggering
unused warning for cgroup_get().

Silence the warning by adding __maybe_unused to cgroup_get().

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: http://lkml.kernel.org/r/20170501145340.17e8ef86@canb.auug.org.au
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 kernel/cgroup/cgroup.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -436,7 +436,7 @@ out_unlock:
 	return css;
 }
 
-static void cgroup_get(struct cgroup *cgrp)
+static void __maybe_unused cgroup_get(struct cgroup *cgrp)
 {
 	css_get(&cgrp->self);
 }


Patches currently in stable-queue which might be from tj@kernel.org are

queue-4.11/cgroup-mark-cgroup_get-with-__maybe_unused.patch
queue-4.11/cpuset-consider-dying-css-as-offline.patch
queue-4.11/revert-ata-sata_mv-convert-to-devm_ioremap_resource.patch
queue-4.11/block-avoid-that-blk_exit_rl-triggers-a-use-after-free.patch
queue-4.11/cgroup-prevent-kill_css-from-being-called-more-than-once.patch
queue-4.11/ahci-acer-sa5-271-ssd-not-detected-fix.patch