On 18 Mar 2021, at 8:27, Miaohe Lin wrote: > It's guaranteed that huge_zero_page will not be NULL if huge_zero_refcount > is increased successfully. When READ_ONCE(huge_zero_page) is returned, > there must be a huge_zero_page and it can be replaced with returning 'true' > when we do not care about the value of huge_zero_page. We can thus make it > return bool to save READ_ONCE cpu cycles as the return value is just used > to check if huge_zero_page exists. > > Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> > --- > mm/huge_memory.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > LGTM. Reviewed-by: Zi Yan <ziy@xxxxxxxxxx> — Best Regards, Yan Zi
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