[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-15762 Interop: sanity-hsm test_500: mdt_coordinator.c:1629:mdt_hsm_update_request_state()) lustre-MDT0000: Cannot find running request for cookie 0x624a1c9f on fid=[0x2000088da:0xe2:0x0]
• 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