Messages in this thread | | | From | Linus Torvalds <> | Date | Thu, 25 Feb 2021 09:54:34 -0800 | Subject | Re: [PATCH v7 1/1] mm/page_alloc.c: refactor initialization of struct page for holes in memory layout |
| |
On Thu, Feb 25, 2021 at 9:07 AM Mike Rapoport <rppt@linux.ibm.com> wrote: > > > > > We might still double-initialize PFNs when two zones overlap within a > > section, correct? > > You mean that a section crosses zones boundary? > I don't think it's that important.
What if there was a memory allocation in between that could allocate the once-initialized page?
Maybe it can't happen, or is not an issue for some other reason, but this code has been fragile and had a ton of subtle issues, so maybe worth documenting (or explaining here why it's just not relevant)
Linus
| |