[go] runtime: make work.spanSPMCs.all doubly-linked

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Michael Pratt (Gerrit)

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Oct 7, 2025, 3:17:03 PM (17 hours ago) Oct 7

to Michael Pratt, goph...@pubsubhelper.golang.org, golang-...@googlegroups.com, Michael Knyszek, Go LUCI, golang-co...@googlegroups.com

Michael Pratt submitted the change

Change information

Commit message:

runtime: make work.spanSPMCs.all doubly-linked

Making this a doubly-linked list allows spanQueue.destroy to immediately
remove and free rings rather than simply marking them as dead and
waiting for the sweeper to deal with them.

For #75771.

Change-Id: I6a6a636c0fb6be08ee967cb6d8f0577511a33c13

Reviewed-on: https://go-review.googlesource.com/c/go/+/709657

LUCI-TryBot-Result: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Reviewed-by: Michael Knyszek <mkny...@google.com>

Files:

M src/runtime/mgcmark_greenteagc.go

Change size: M

Delta: 1 file changed, 42 insertions(+), 19 deletions(-)

Branch: refs/heads/master

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Code-Review: +2 by Michael Knyszek
TryBots-Pass: LUCI-TryBot-Result+1 by Go LUCI

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