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authorJason Low <jason.low2@hp.com>2015-04-16 02:14:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-16 02:35:18 +0300
commit4db0c3c2983cc6b7a08a33542af5e14de8a9258c (patch)
tree66cfeaeae432f904c09af45e030b7e1e00476011 /mm/memory.c
parent9d8c47e4bb1c20dbceee437f9fa7d76dafee80a2 (diff)
downloadlinux-4db0c3c2983cc6b7a08a33542af5e14de8a9258c.tar.xz
mm: remove rest of ACCESS_ONCE() usages
We converted some of the usages of ACCESS_ONCE to READ_ONCE in the mm/ tree since it doesn't work reliably on non-scalar types. This patch removes the rest of the usages of ACCESS_ONCE, and use the new READ_ONCE API for the read accesses. This makes things cleaner, instead of using separate/multiple sets of APIs. Signed-off-by: Jason Low <jason.low2@hp.com> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Davidlohr Bueso <dave@stgolabs.net> Acked-by: Rik van Riel <riel@redhat.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
-rw-r--r--mm/memory.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c
index ac20b2a6a0c3..656593f73c8e 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2845,7 +2845,7 @@ static void do_fault_around(struct vm_area_struct *vma, unsigned long address,
struct vm_fault vmf;
int off;
- nr_pages = ACCESS_ONCE(fault_around_bytes) >> PAGE_SHIFT;
+ nr_pages = READ_ONCE(fault_around_bytes) >> PAGE_SHIFT;
mask = ~(nr_pages * PAGE_SIZE - 1) & PAGE_MASK;
start_addr = max(address & mask, vma->vm_start);