RFC mm: remove PageReserved
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b4 am [email protected]Versions newest first
- v1 RFC Latest2 patches 64 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | mm: remap ZERO_PAGE mappingsmm/ | +4 | 0 replies | |
| 2/2 | mm: core remove PageReservedarch/ drivers/ drivers/ +15 more | +188 | 0 replies |
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Cover letter [RFC][patch 0/2] mm: remove PageReserved
Hi,
I'll be looking to send these off to Andrew after 2.6.14 opens, with the aim of having them merged by 2.6.15 hopefully.
It doesn't look like they'll be able to easily free up a page flag for 2 reasons. First, PageReserved will probably be kept around for at least one release. Second, swsusp and some arch code (ioremap) wants to know about struct pages that don't point to valid RAM - currently they use PageReserved, but we'll probably just introduce a PageValidRAM or something when PageReserved goes.
I believe this makes memory management cleaner and easier to understand. My other reason behind this is that the lockless pagecache patches needs it for sane page refcounting.
If anyone has an issue with the patches or my merge plan, let's get some discussion going.
Thanks,
Nick
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