mirror of https://gitee.com/openkylin/linux.git
affs: use zero_user_page
Use zero_user_page() instead of open-coding it. Signed-off-by: Nate Diller <nate.diller@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -628,11 +628,7 @@ static int affs_prepare_write_ofs(struct file *file, struct page *page, unsigned
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return err;
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}
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if (to < PAGE_CACHE_SIZE) {
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char *kaddr = kmap_atomic(page, KM_USER0);
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memset(kaddr + to, 0, PAGE_CACHE_SIZE - to);
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flush_dcache_page(page);
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kunmap_atomic(kaddr, KM_USER0);
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zero_user_page(page, to, PAGE_CACHE_SIZE - to, KM_USER0);
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if (size > offset + to) {
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if (size < offset + PAGE_CACHE_SIZE)
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tmp = size & ~PAGE_CACHE_MASK;
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