tree: git://git.cmpxchg.org/linux-mmotm.git master
head: a621774e0e7bbd9e8a024230af4704cc489bd40e
commit: ef99d21ea4a246e56b9a55de5740655d30735f33 [78/178] madvise: cleanup swapin_walk_pmd_entry()
config: make ARCH=i386 defconfig
All warnings:
mm/madvise.c: In function 'swapin_walk_pte_entry':
>> mm/madvise.c:161:190: warning: value computed is not used [-Wunused-value]
pte_offset_map(walk->pmd, start & PMD_MASK);
^
vim +161 mm/madvise.c
145 pte_t *orig_pte = pte - ((start & (PMD_SIZE - 1)) >> PAGE_SHIFT);
146 swp_entry_t entry;
147 struct page *page;
148
149 ptent = *pte;
150 pte_unmap_unlock(orig_pte, walk->ptl);
151 if (pte_present(ptent) || pte_none(ptent) || pte_file(ptent))
152 goto lock;
153 entry = pte_to_swp_entry(ptent);
154 if (unlikely(non_swap_entry(entry)))
155 goto lock;
156 page = read_swap_cache_async(entry, GFP_HIGHUSER_MOVABLE,
157 walk->vma, start);
158 if (page)
159 page_cache_release(page);
160 lock:
> 161 pte_offset_map(walk->pmd, start & PMD_MASK);
162 spin_lock(walk->ptl);
163 return 0;
164 }
165
166 static void force_swapin_readahead(struct vm_area_struct *vma,
167 unsigned long start, unsigned long end)
168 {
169 struct mm_walk walk = {
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