Differential D23158

vfs: refactor vnode allocation
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Authored by mjg on Jan 13 2020, 8:44 PM.

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kib
jeff

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rS356811: vfs: refcator vnode allocation

Summary

Semantics are preserved. One benefit is that there are fewer accesses to both numvnodes and freevnodes.

Diff Detail

Repository

rS FreeBSD src repository - subversion

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Event Timeline

mjg created this revision.Jan 13 2020, 8:44 PM

Herald added a subscriber: imp. · View Herald TranscriptJan 13 2020, 8:44 PM

Harbormaster completed remote builds in B28644: Diff 66700.Jan 13 2020, 8:44 PM

mjg added a child revision: D23140: vfs: increment numvnodes without the vnode list lock unless under pressure.Jan 13 2020, 8:47 PM

I do not object to this patch but I would be more comfortable with kib reviewing.

This revision is now accepted and ready to land.Jan 15 2020, 11:45 PM

kib accepted this revision.Jan 16 2020, 2:01 PM

kib added inline comments.

sys/kern/vfs_subr.c
1508 ↗	(On Diff #66700)	Small change is that cyclecount was zeroed before when numvnodes < desiredvnodes.
1537 ↗	(On Diff #66700)	Style recommends putting binary op on the previous line.
1545 ↗	(On Diff #66700)	You can unlock vnode_list_mtx before wakeup.

Closed by commit rS356811: vfs: refcator vnode allocation (authored by mjg). · Explain WhyJan 16 2020, 9:43 PM

This revision was automatically updated to reflect the committed changes.

mjg added a commit: rS356811: vfs: refcator vnode allocation.

Revision Contents
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Size

head/

sys/

kern/

152 lines

Diff 66869

head/sys/kern/vfs_subr.c

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