Re: [PATCH v2 3/7] block/psi: remove PSI annotations from direct IO

Looks good, Reviewed-by: Christoph Hellwig

[PATCH v2 3/7] block/psi: remove PSI annotations from direct IO

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 tracking for