tree: git://git.cmpxchg.org/linux-mmotm.git master
head: 61f5f835b6f06fbc233481b5d3c0afd71ecf54e8
commit: 3426387b81048271b9c48a2a35c1e474e4fce06f [127/385] mm-mlock-introduce-vm_lockonfault-and-add-mlock-flags-to-enable-it-v4
reproduce:
# apt-get install sparse
git checkout 3426387b81048271b9c48a2a35c1e474e4fce06f
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
mm/mmap.c:1345:47: sparse: implicit cast to nocast type
mm/mmap.c:1347:45: sparse: implicit cast to nocast type
mm/mmap.c:1356:45: sparse: implicit cast to nocast type
mm/mmap.c:1377:47: sparse: implicit cast to nocast type
mm/mmap.c:1397:37: sparse: implicit cast to nocast type
mm/mmap.c:1401:37: sparse: implicit cast to nocast type
mm/mmap.c:1445:33: sparse: implicit cast to nocast type
mm/mmap.c:1580:29: sparse: implicit cast to nocast type
>> mm/internal.h:253:43: sparse: implicit cast to nocast type
mm/mmap.c:2652:37: sparse: implicit cast to nocast type
mm/mmap.c:2692:34: sparse: implicit cast to nocast type
mm/mmap.c:2694:34: sparse: implicit cast to nocast type
mm/mmap.c:2699:67: sparse: implicit cast to nocast type
>> mm/internal.h:253:43: sparse: implicit cast to nocast type
vim +253 mm/internal.h
237 {
238 return (flags & (VM_SHARED | VM_MAYWRITE)) == VM_MAYWRITE;
239 }
240
241 /* mm/util.c */
242 void __vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma,
243 struct vm_area_struct *prev, struct rb_node *rb_parent);
244
245 #ifdef CONFIG_MMU
246 extern long populate_vma_page_range(struct vm_area_struct *vma,
247 unsigned long start, unsigned long end, int *nonblocking);
248 extern void munlock_vma_pages_range(struct vm_area_struct *vma,
249 unsigned long start, unsigned long end, vm_flags_t to_drop);
250 static inline void munlock_vma_pages_all(struct vm_area_struct *vma)
251 {
252 munlock_vma_pages_range(vma, vma->vm_start, vma->vm_end,
> 253 VM_LOCKED | VM_LOCKONFAULT);
254 }
255
256 /*
257 * must be called with vma's mmap_sem held for read or write, and page locked.
258 */
259 extern void mlock_vma_page(struct page *page);
260 extern unsigned int munlock_vma_page(struct page *page);
261
---
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