From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Date: Wed, 3 Jul 2013 22:03:31 +0000 (-0700)
Subject: mm: fix the TLB range flushed when __tlb_remove_page() runs out of slots
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~17^2~332
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6c495a96ce02574e765d5140039a64c8d4e8c9e;p=pandora-kernel.git

mm: fix the TLB range flushed when __tlb_remove_page() runs out of slots

zap_pte_range loops from @addr to @end.  In the middle, if it runs out of
batching slots, TLB entries needs to be flushed for @start to @interim,
NOT @interim to @end.

Since ARC port doesn't use page free batching I can't test it myself but
this seems like the right thing to do.

Observed this when working on a fix for the issue at thread:
http://www.spinics.net/lists/linux-arch/msg21736.html

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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