[haiku-bugs] Re: [Haiku] #8466: VM caches aren't resized in some cases when cutting areas
- From: "hamish" <trac@xxxxxxxxxxxx>
- Date: Sun, 15 Apr 2012 17:19:41 -0000
#8466: VM caches aren't resized in some cases when cutting areas
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Reporter: hamish | Owner: bonefish
Type: bug | Status: assigned
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/Development
Resolution: | Keywords: kernel vm cache
Blocked By: | Blocking:
Has a Patch: 1 | Platform: All
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Comment (by hamish):
Replying to [comment:3 bonefish]:
> I don't see what would speak against iterating through the other cache's
page tree.
Indeed, I didn't realise that the page tree was a public member.
This patch depends on my patch in #8233.
RE your comment there about guard sizes and cache resizing, I'm not sure
quite what would be the expected behaviour in this case. Should the guard
size be preserved after resizing, or should the guard be resized to
prevent previously accessible pages becoming guarded? So I added a
`VMAnonymous(NoSwap)Cache::SetGuardSize()` to let the caller decide what's
best for them.
--
Ticket URL: <http://dev.haiku-os.org/ticket/8466#comment:5>
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