linux-kernel - [PATCH 1/2] mm: export find_extend_vma and handle_mm

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Message-Id: <1414179271-7621-1-git-send-email-jbarnes@virtuousgeek.org>
Date:	Fri, 24 Oct 2014 12:34:30 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	linux-kernel@...r.kernel.org
Cc:	jroedel@...e.de
Subject: [PATCH 1/2] 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@...tuousgeek.org>
---
 mm/memory.c | 1 +
 mm/mmap.c   | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/mm/memory.c b/mm/memory.c
index 1cc6bfb..969ff0c 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3378,6 +3378,7 @@ 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 7f85520..2ee7971 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2359,6 +2359,8 @@ 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.
-- 
1.9.1

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