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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-14 18:54:28 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-14 18:54:28 (GMT)
commitc833e17e276bd5d5f174aa924c4f102754ebc2be (patch)
tree90fb3d7c9b6ab66fa5d651675f054d5a7aa8a01a /mm
parentfee5429e028c414d80d036198db30454cfd91b7a (diff)
parentc5b19946eb76c67566aae6a84bf2b10ad59295ea (diff)
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux
Pull ACCESS_ONCE() rule tightening from Christian Borntraeger: "Tighten rules for ACCESS_ONCE This series tightens the rules for ACCESS_ONCE to only work on scalar types. It also contains the necessary fixups as indicated by build bots of linux-next. Now everything is in place to prevent new non-scalar users of ACCESS_ONCE and we can continue to convert code to READ_ONCE/WRITE_ONCE" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux: kernel: Fix sparse warning for ACCESS_ONCE next: sh: Fix compile error kernel: tighten rules for ACCESS ONCE mm/gup: Replace ACCESS_ONCE with READ_ONCE x86/spinlock: Leftover conversion ACCESS_ONCE->READ_ONCE x86/xen/p2m: Replace ACCESS_ONCE with READ_ONCE ppc/hugetlbfs: Replace ACCESS_ONCE with READ_ONCE ppc/kvm: Replace ACCESS_ONCE with READ_ONCE
Diffstat (limited to 'mm')
-rw-r--r--mm/gup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/gup.c b/mm/gup.c
index 51bf0b0..a6e24e2 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1092,7 +1092,7 @@ static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end,
pmdp = pmd_offset(&pud, addr);
do {
- pmd_t pmd = ACCESS_ONCE(*pmdp);
+ pmd_t pmd = READ_ONCE(*pmdp);
next = pmd_addr_end(addr, end);
if (pmd_none(pmd) || pmd_trans_splitting(pmd))

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