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authorJan Kara <jack@suse.cz>2016-12-15 02:07:45 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-15 03:04:09 +0300
commitcae1240257d9ba4b40eb240124c530de8ee349bc (patch)
tree8655c822aa48bb1dd03eb229c9e3010a7218006c /mm
parenta19e25536ed3a20845f642ce531e10c27fb2add5 (diff)
downloadlinux-cae1240257d9ba4b40eb240124c530de8ee349bc.tar.xz
mm: export follow_pte()
DAX will need to implement its own version of page_check_address(). To avoid duplicating page table walking code, export follow_pte() which does what we need. Link: http://lkml.kernel.org/r/1479460644-25076-18-git-send-email-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 8b7f0656a921..edd899d0decb 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3817,8 +3817,8 @@ out:
return -EINVAL;
}
-static inline int follow_pte(struct mm_struct *mm, unsigned long address,
- pte_t **ptepp, spinlock_t **ptlp)
+int follow_pte(struct mm_struct *mm, unsigned long address, pte_t **ptepp,
+ spinlock_t **ptlp)
{
int res;