Commit e1d6d01a authored Dec 12, 2014 by Jesse Barnes Committed by Linus Torvalds Dec 13, 2014

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>

parent 7d9ca000

mm/memory.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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
		/*

mm/mmap.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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.