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Differential D23311

Move the fault getpages code into its own function.
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Authored by jeff on Jan 22 2020, 3:03 AM.
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alc
dougm
kib
markj
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rS357025: (fault 6/9) Move getpages and associated logic into a dedicated function.
Summary

I left the readahead in the main loop because we don't need to repeat the dropbehind. However, storing the cached entry variables before unlocking the map was only done once before. I don't think this was important to the algorithm nor is it especially expensive.

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rS FreeBSD src repository - subversion
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Event Timeline

jeff created this revision.Jan 22 2020, 3:03 AM
Harbormaster completed remote builds in B28836: Diff 67131.Jan 22 2020, 3:03 AM
jeff updated this revision to Diff 67132.Jan 22 2020, 3:08 AM

Fix a merge issue.

Harbormaster completed remote builds in B28837: Diff 67132.Jan 22 2020, 3:08 AM
jeff edited the summary of this revision. (Show Details)Jan 22 2020, 3:10 AM
jeff added reviewers: alc, dougm, kib, markj.
jeff set the repository for this revision to rS FreeBSD src repository - subversion.
Herald added a subscriber: imp. · View Herald TranscriptJan 22 2020, 3:10 AM
kib added inline comments.Jan 22 2020, 1:31 PM
sys/vm/vm_fault.c
1088 ↗(On Diff #67132)

Please do not do this. You are mixing VM_PAGER_XXX (pager errors namespace) and KERN_XXX (Mach errors).

This is arguably incorrect in particular because the numeric values intersect. Translate the rest of errors into KERN_ as well.

jeff added inline comments.Jan 22 2020, 6:43 PM
sys/vm/vm_fault.c
1088 ↗(On Diff #67132)

ah yes. Will do.

I would argue that we should convert the whole mess to errno but not today.

jeff updated this revision to Diff 67159.Jan 22 2020, 9:03 PM

Correct return values. Don't send pager errors back to vm_fault().

Harbormaster completed remote builds in B28855: Diff 67159.Jan 22 2020, 9:03 PM
kib accepted this revision.Jan 22 2020, 9:11 PM
This revision is now accepted and ready to land.Jan 22 2020, 9:11 PM
Closed by commit rS357025: (fault 6/9) Move getpages and associated logic into a dedicated function. (authored by jeff). · Explain WhyJan 23 2020, 5:18 AM
This revision was automatically updated to reflect the committed changes.
jeff added a commit: rS357025: (fault 6/9) Move getpages and associated logic into a dedicated function..

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head/
sys/
vm/
203 lines

Diff 67183

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head/sys/vm/vm_fault.c

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