Remove #include <asm/barrier.h>, no longer needed.

Implement @markj suggestions.

No, I didn’t find definitions elsewhere that should belong to this header.

I’m adding the comment in the final commit. Thank you!

Thank you @markj for the detailed feedback! I reimplemented the patch based on your suggestion and will test it shortly.

Address style-related comment from bz

Call sysctl_handle_opaque() instead of sysctl_handle_string()

Reimplement patch entirely

Yes. For now, there is no connection between linsysfs and linuxkpi: linuxkpi does not add its entries as files and directories in linsysfs, it always used a sysctl interface instead.

Thank you all for the extensive and great feedback on this patch!

I made local changes to address @bz comments, but I will only upload it when other concerns are addressed.

I reworked the patch to unify the put_page() and __free_pages() code paths. Now, all put/freed pages are handled by __free_pages().

I spent some time to review the folio code and the existing page allocation code (alloc_pages(), __free_pages(), put_page(), release_pages(), ...).

Address @bz comments.

@bz: Is there something I should do to document the breakage?

Add diff context. No other changes.

Add diff context. No other changes.

Add diff context. No other changes.

In D48751#1112293, @imp wrote:

Also, please do *NOT* commit this (or any other) with *WHY* as the subject line of the commit message. each commit should have a single line at the top that describes the whole commit.
This is true for the whole series. Also I think I saw a *HOW* heading, that should be omitted as well and the context should make it clear to match our usual practice.