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Handle pagein clustering for vm_page_grab_valid() so that exec can use it.
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Authored by jeff on Dec 8 2019, 2:06 AM.
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Details

Summary

This should be a functional NOP. It will allow for other vm_page_grab_valid() consumers to prefetch pages but more importantly it decreases the surface area for upcoming changes and reduces the amount of complicated VM code floating around in kern/*.

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rS FreeBSD src repository - subversion
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Event Timeline

jeff added reviewers: alc, dougm, kib, markj.
jeff set the repository for this revision to rS FreeBSD src repository - subversion.
This revision is now accepted and ready to land.Dec 8 2019, 5:47 PM
sys/vm/vm_page.c
4340–4342 ↗(On Diff #65397)

This needs to say that flags, like VM_ALLOC_WIRED, won't affect the additional pages. It's not going to be obvious to everyone.

sys/kern/kern_exec.c
996 ↗(On Diff #65397)

error != VM_PAGER_OK