From f4d2897b930cb546d435f64fd4b74ea5d1223dff Mon Sep 17 00:00:00 2001
From: Anisse Astier <anisse@astier.eu>
Date: Wed, 24 Jun 2015 16:56:36 -0700
Subject: [PATCH] mm/page_alloc.c: cleanup obsolete KM_USER*

It's been five years now that KM_* kmap flags have been removed and that
we can call clear_highpage from any context.  So we remove prep_zero_pages
accordingly.

Signed-off-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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