On Sat, Jan 09, 2021 at 04:02:59PM +, Pavel Begunkov wrote:
> Direct IO does not operate on the current working set of pages managed
> by the kernel, so it should not be accounted as memory stall to PSI
> infrastructure.
>
> The block layer and iomap direct IO use bio_iov_iter_get_pages()
> to
Direct IO does not operate on the current working set of pages managed
by the kernel, so it should not be accounted as memory stall to PSI
infrastructure.
The block layer and iomap direct IO use bio_iov_iter_get_pages()
to build bios, and they are the only users of it, so to avoid PSI
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