[LU-11616] Optimize handling statahead delay

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.11.0, Lustre 2.12.0
• Fix Version/s: Lustre 2.13.0
• Type: Improvement
• Priority: Minor
• Reporter: James A Simmons
• Assignee: James A Simmons
• Resolution: Fixed
• Labels: upstream

Description

While porting the fix for LU-9210 it was purposed by Neil to handle this better with smp_store_release() and smp_load_acquie(). This would make it obvious which variable was important, and would show the paired synchronization points.

Issue Links

• is related to: LU-9210 'ls' hung because of statahead delay

Comments

[Gerrit Updater]

James Simmons ([e-mail]) uploaded a new patch: https://review.whamcloud.com/33571
Subject: LU-11616 llite: replace smp_wb() with full memory barrier
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 522913a87ff31e047f363ecebef344531f701ef4

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/33571/
Subject: LU-11616 llite: replace smp_wb() with full memory barrier
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: bdb2683fffa89ce31f43f5f42eed50e6d6dbb94b

[Peter Jones]

Landed for 2.13

[James A Simmons]

Another patch coming.

[Cory Spitz]

simmonsja, do you still have another patch coming? I assume it was under the guise of another ticket, yes?

[James A Simmons]

No, I think this is really completed.

[Cory Spitz]

simmonsja, well, this issue is RESOLVED::Fixed. So, I think that you should either re-open it or open a new ticket for your remaining work. Since that work is "really complicated" I would suggest a separate ticket.