[LU-11085] Replace Lustre interval tree with kernel one

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Affects Version/s: Lustre 2.13.0
• Labels: upstream
• Assignee: Neil Brown
• Reporter: James A Simmons

Description

Lustre created a internal interval tree based on the beta patch for the linux kernel. Its been long since merged into the kernel tree so Lustre can migrate to using that implementation

Issue Links

• is related to: LU-1669 lli->lli_write_mutex (single shared file performance)
• is related to: LU-11463 DOM: osc_extent_make_ready()) ASSERTION( last_oap_count > 0 ) failed
• is related to: LU-12511 Prepare lustre for adoption into the linux kernel
• is related to: LU-17276 Use interval tree in flock to improve the scalability

Comments

[James A Simmons]

all patches landed.

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/54565/
Subject: LU-11085 tests: add a test case for same range lock
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 0e2f9f8568675a3f473767a9881aa1bc470ecc95

[James A Simmons]

One patch left

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/49166/
Subject: LU-11085 lustre: remove interval-tree code
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: df0663f5a3a0b4ecb55ee67c07d1ced41620832b

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/54587/
Subject: LU-11085 ldlm: optimise extent locks with identical extent
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 0cf356c4e4277d20324463b0cfcd4f414b7c5df9

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/41792/
Subject: LU-11085 ldlm: convert ldlm extent locks to linux extent-tree
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: d2ff746a997395e6a31d107e4026ae93c59aef87

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/34021/
Subject: LU-11085 ldlm: move interval_insert call from ldlm_lock to ldlm_extent
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: f5e73b3efb71b7d88d80389f84aef670a37210c3

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/53931/
Subject: LU-11085 ldlm: save space in struct ldlm_lock
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: d199b178ed694dfafa3082604a440d08166067ce

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/33221/
Subject: LU-11085 ldlm: simplify use of interval-tree.
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: c5b8ac83bdc199e564df3a9c3636e9ad89c03ef3

[Neil Brown]

If that is a credible pattern, then the current patch set won't handle it well.

I've uploaded a new patch (see above) which should handle the case better.

 

[Gerrit Updater]

"Neil Brown <[e-mail]>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/54587
Subject: LU-11085 ldlm: optimise extent locks with identical extent
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 2f6e26534df772094f8896b8c2739d6267539f5c