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Muchun Song authored
We can choose to copy three contiguous tail pages' content to the first three pages instead of copying one by one to simplify the code and reduce code size from 229 bytes to 63 bytes. The BUILD_BUG_ON() aims to avoid out-of-bounds accesses. Link: https://lkml.kernel.org/r/20220819035532.6189-1-songmuchun@bytedance.com Signed-off-by:
Muchun Song <songmuchun@bytedance.com> Reviewed-by:
Miaohe Lin <linmiaohe@huawei.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org>
Muchun Song authoredWe can choose to copy three contiguous tail pages' content to the first three pages instead of copying one by one to simplify the code and reduce code size from 229 bytes to 63 bytes. The BUILD_BUG_ON() aims to avoid out-of-bounds accesses. Link: https://lkml.kernel.org/r/20220819035532.6189-1-songmuchun@bytedance.com Signed-off-by:
