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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-16 09:27:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-16 09:27:13 -0800 |
| commit | 2ebc8ec86fe0f3f3acf9ba9b41a368f819e7807e (patch) | |
| tree | c0b3d4f14ae6dd98318d78fcf7d16f47954e06a4 /arch/s390/mm/gup.c | |
| parent | df6e61d4ca268dc8706db38222fde9f04701566c (diff) | |
| parent | 89480801a17a3069f45169d40b828c8e511aa005 (diff) | |
| download | op-kernel-dev-2ebc8ec86fe0f3f3acf9ba9b41a368f819e7807e.zip op-kernel-dev-2ebc8ec86fe0f3f3acf9ba9b41a368f819e7807e.tar.gz | |
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] kprobes: Fix the return address of multiple kretprobes
[S390] kprobes: disable interrupts throughout
[S390] ftrace: build without frame pointers on s390
[S390] mm: add devmem_is_allowed() for STRICT_DEVMEM checking
[S390] vmlogrdr: purge after recording is switched off
[S390] cio: fix incorrect ccw_device_init_count
[S390] tape: add medium state notifications
[S390] fix get_user_pages_fast
Diffstat (limited to 'arch/s390/mm/gup.c')
| -rw-r--r-- | arch/s390/mm/gup.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c index 38e641c..45b405c 100644 --- a/arch/s390/mm/gup.c +++ b/arch/s390/mm/gup.c @@ -20,18 +20,17 @@ static inline int gup_pte_range(pmd_t *pmdp, pmd_t pmd, unsigned long addr, unsigned long end, int write, struct page **pages, int *nr) { - unsigned long mask, result; + unsigned long mask; pte_t *ptep, pte; struct page *page; - result = write ? 0 : _PAGE_RO; - mask = result | _PAGE_INVALID | _PAGE_SPECIAL; + mask = (write ? _PAGE_RO : 0) | _PAGE_INVALID | _PAGE_SPECIAL; ptep = ((pte_t *) pmd_deref(pmd)) + pte_index(addr); do { pte = *ptep; barrier(); - if ((pte_val(pte) & mask) != result) + if ((pte_val(pte) & mask) != 0) return 0; VM_BUG_ON(!pfn_valid(pte_pfn(pte))); page = pte_page(pte); |
