From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Sat, 13 Dec 2014 00:55:27 +0000 (-0800)
Subject: mm: export find_extend_vma() and handle_mm_fault() for driver use
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e1d6d01ab491bee6cfa02f2c10db50f31de85e79;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

mm: export find_extend_vma() and handle_mm_fault() for driver use

This lets drivers like the AMD IOMMUv2 driver handle faults a bit more
simply, rather than doing tricks with page refs and get_user_pages().

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Oded Gabbay <oded.gabbay@amd.com>
Cc: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/memory.c b/mm/memory.c
index 5afdb5b8d4e2..fbf74112de5b 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3365,6 +3365,7 @@ int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(handle_mm_fault);
 
 #ifndef __PAGETABLE_PUD_FOLDED
 /*
diff --git a/mm/mmap.c b/mm/mmap.c
index 0d84b2f86f3b..7b36aa7cc89a 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2362,6 +2362,8 @@ find_extend_vma(struct mm_struct *mm, unsigned long addr)
 }
 #endif
 
+EXPORT_SYMBOL_GPL(find_extend_vma);
+
 /*
  * Ok - we have the memory areas we should free on the vma list,
  * so release them, and do the vma updates.