forked from Minki/linux
relay: use kvcalloc to alloc page array in relay_alloc_page_array
kvcalloc() is safer because it will check the integer overflows, and using it will simple the logic of allocation size. Link: https://lkml.kernel.org/r/20220909101025.82955-1-wuchi.zero@gmail.com Signed-off-by: wuchi <wuchi.zero@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -60,10 +60,7 @@ static const struct vm_operations_struct relay_file_mmap_ops = {
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*/
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static struct page **relay_alloc_page_array(unsigned int n_pages)
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{
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const size_t pa_size = n_pages * sizeof(struct page *);
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if (pa_size > PAGE_SIZE)
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return vzalloc(pa_size);
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return kzalloc(pa_size, GFP_KERNEL);
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return kvcalloc(n_pages, sizeof(struct page *), GFP_KERNEL);
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}
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/*
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