From 5e3b1e059a209fc2a3049598349375143c58b880 Mon Sep 17 00:00:00 2001
From: Chintan Pandya <cpandya@codeaurora.org>
Date: Sat, 26 May 2018 14:15:19 +1000
Subject: mm-vmalloc-clean-up-vunmap-to-avoid-pgtable-ops-twice-v3

Link: http://lkml.kernel.org/r/1525176960-18408-1-git-send-email-cpandya@codeaurora.org
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Byungchul Park <byungchul.park@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 mm/vmalloc.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'mm')

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 6729400f19c3..781ce02afb90 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1036,6 +1036,10 @@ static void vb_free(const void *addr, unsigned long size)
 
 	vunmap_page_range((unsigned long)addr, (unsigned long)addr + size);
 
+	if (debug_pagealloc_enabled())
+		flush_tlb_kernel_range((unsigned long)addr,
+					(unsigned long)addr + size);
+
 	spin_lock(&vb->lock);
 
 	/* Expand dirty range */
-- 
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