Messages in this thread | | | Date | Fri, 30 Jan 2009 13:25:41 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [PATCH] Fix OOPS in mmap_region() when merging adjacent VM_LOCKED file segments |
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On Fri, 30 Jan 2009, Hugh Dickins wrote: > > But I'm caring more about that VM_ACCOUNT...
The bright side here is that I think the VM_ACCOUNT bit differences only really happen for MAP_SHARED file mappings. For MAP_SHARED anon mappings we already don't share (for other reasons), and for private mappings VM_ACCOUNT looks stable (ie it's reliably either set or not, and stays that way).
So the impact is reasonably low. But it would definitely be good to clean up that whole VM_ACCOUNT logic, and incidentally then fix that merging issue at the same time.
Linus
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