[LU-12542] LDLM improvements form linux lustre client work

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Assignee: James A Simmons
• Reporter: James A Simmons

Description

While working on the ldlm interval work a few issues were pointed out. For example it was discussed how the ldlm_lock is to large so it consumes a lot of memory. This ticket tracks the various improvement being worked that is coming from the upstream work.

Issue Links

• is related to: LU-12511 Prepare lustre for adoption into the linux kernel
• is related to: LU-4801 spin lock contention in lock_res_and_lock

Comments

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/40204/
Subject: LU-12542 osd: consolidate RCU handling
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: bf7431d6e14c8a0a530cf7ed538d579cc2057e78

[Gerrit Updater]

Andreas Dilger ([e-mail]) uploaded a new patch: https://review.whamcloud.com/40204
Subject: LU-12542 osd: consolidate RCU handling
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: a3a2ba8a28395ace2555ed54c1e3e1f0090bca8f

[Peter Jones]

It looks like everything has landed for 2.14

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/37789/
Subject: LU-12542 lustre: remove INIT_LIST_HEAD_RCU support.
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 7b560d63759dbee2ac232bbe93a5071f8b0ebd1c

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35484/
Subject: LU-12542 ldlm: don't access l_resource when not locked.
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 74f4393c74da4eac8bfcfe2a53b8621847701fd6

[Gerrit Updater]

Neil Brown ([e-mail]) uploaded a new patch: https://review.whamcloud.com/37789
Subject: LU-12542 lustre: remove INIT_LIST_HEAD_RCU support.
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: c8b487cf6b2b626c3e8b2fe92b73575297c48742

[James A Simmons]

Need to talk to Neil to see what is left.

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35863/
Subject: LU-12542 handle: discard h_lock.
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 6acafe7ac4efc48e0c406413401e9a8a92b51be2

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35862/
Subject: LU-12542 handle: use hlist for hash lists.
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 9c9ea6584cfb314aec693be2b03a0f55f60127a3

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35861/
Subject: LU-12542 handle: remove locking from class_handle2object()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: e2458a94a6a2d7a5a70412652f1bef35ee1280c2