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 6366PjX7 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: David Hildenbrand (Red Hat) writes: > On 1/7/26 08:20, Ankur Arora wrote: >> Define clear_user_highpages() which uses the range clearing primitive, >> clear_user_pages(). We can safely use this when CONFIG_HIGHMEM is >> disabled and if the architecture does not have clear_user_highpage. >> The first is needed to ensure that contiguous page ranges stay >> contiguous which precludes intermediate maps via HIGMEM. >> The second, because if the architecture has clear_user_highpage(), >> it likely needs flushing magic when clearing the page, magic that >> we aren't privy to. >> For both of those cases, just fallback to a loop around >> clear_user_highpage(). >> Signed-off-by: Ankur Arora >> --- >> include/linux/highmem.h | 45 ++++++++++++++++++++++++++++++++++++++++- >> 1 file changed, 44 insertions(+), 1 deletion(-) >> diff --git a/include/linux/highmem.h b/include/linux/highmem.h >> index 019ab7d8c841..af03db851a1d 100644 >> --- a/include/linux/highmem.h >> +++ b/include/linux/highmem.h >> @@ -251,7 +251,14 @@ static inline void clear_user_pages(void *addr, unsigned long vaddr, >> #endif >> } >> -/* when CONFIG_HIGHMEM is not set these will be plain clear/copy_page */ >> +/** >> + * clear_user_highpage() - clear a page to be mapped to user space > > Just a minor comment as I am skimming the patches: I recall kerneldoc does not > require the "()" here. But I also recall that it doesn't hurt :) Thanks. I had assumed that the "()" was required. Just now grepped to see which style is more common and found that I had used both of them in just this series :). > Acked-by: David Hildenbrand (Red Hat) Thanks for all the acks! -- ankur