ksm: remove dedicated macro KSM_FLAG_MASK
The macro KSM_FLAG_MASK is used in rmap_walk_ksm() only. So we can replace ~KSM_FLAG_MASK with PAGE_MASK to remove this dedicated macro and make code more consistent because PAGE_MASK is used elsewhere in this file. Link: https://lkml.kernel.org/r/20210330140228.45635-4-linmiaohe@huawei.comSigned-off-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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