On 08/04/2015 01:36 PM, Leonid Yegoshin wrote:
David,
Note: Excuse me for bothering you but if guard page logic doesn't work
anymore then it can be scraped. It allows me to optimize some cache
flushes in VMAP area - instead of flushing a full cache, just flush a
range of pages.
I don't know what the purpose of guard pages is. I thought it was to
produce an OOPs message if you accessed just beyond the end of the vmap
area. If people are using them for some other reason, then I am not
aware of it.
David.
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