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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>
This commit is contained in:
Jesse Barnes 2014-12-12 16:55:27 -08:00 committed by Linus Torvalds
parent 7d9ca0004f
commit e1d6d01ab4
2 changed files with 3 additions and 0 deletions
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1
mm/memory.c
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@ -3365,6 +3365,7 @@ int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
return ret; return ret;
} }
EXPORT_SYMBOL_GPL(handle_mm_fault);
#ifndef __PAGETABLE_PUD_FOLDED #ifndef __PAGETABLE_PUD_FOLDED
/* /*

2
mm/mmap.c
View File

@ -2362,6 +2362,8 @@ find_extend_vma(struct mm_struct *mm, unsigned long addr)
} }
#endif #endif
EXPORT_SYMBOL_GPL(find_extend_vma);
/* /*
* Ok - we have the memory areas we should free on the vma list, * Ok - we have the memory areas we should free on the vma list,
* so release them, and do the vma updates. * so release them, and do the vma updates.