[LU-15220] Linux kernel 5.14 support

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Assignee: Jian Yu
• Reporter: Jian Yu

Description

Main changes needed to support Linux kernel 5.14 include:

• __set_page_dirty() is no longer exported
• idmapped mounts support, which adds 'struct user_namespace *' to all VFS operations (since kernel 5.12)
• '/* fallthrough */' hits implicit-fallthrough error with gcc version 11. Using the pseudo keyword 'fallthrough' to resolve the issue
• needs to import namespace CRYPTO_INTERNAL (since kernel 5.12)

Issue Links

• is related to: LU-16013 SLES15 SP4 client BUG: kernel NULL pointer dereference
• is related to: LU-15420 Linux kernel 5.15 support
• is related to: LU-12511 Prepare lustre for adoption into the linux kernel
• is related to: LU-14651 Linux kernel 5.12 support

Comments

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/45566/
Subject: LU-15220 lnet: use 'fallthrough' pseudo keyword for switch
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 8fed107588b74c2a822421e7c0b136210d3dcf65

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/45777/
Subject: LU-15220 tests: avoid gcc-11 -Werror=stringop-overread warning
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: c5fb44f5ecf8494cd5a497947981bd6905ddc084

[Gerrit Updater]

"Andreas Dilger <[e-mail]>" uploaded a new patch: https://review.whamcloud.com/46270
Subject: LU-15220 utils: use 'fallthrough' pseudo keyword for switch
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 22cf730b60f554d9cfd7ab74859284a8b5aaec6e

[Gerrit Updater]

"Andreas Dilger <[e-mail]>" uploaded a new patch: https://review.whamcloud.com/46269
Subject: LU-15220 lustre: use 'fallthrough' pseudo keyword for switch
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 0f36810ae522f8e7da6c5635f181cc8002204337

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/45812/
Subject: LU-15220 libcfs: fix panic_notifier_list undeclared error
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: fb545fa83837c1478ad41f752cf5d3e313b67c73

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/45927/
Subject: LU-15220 llite: Compat for set_pagevec_dirty
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 8fdef1381ea07657d6689818b2897d69cb7e9c83

[Jian Yu]

Hi Ihara,
Please apply all of the un-merged patches in this ticket and those in LU-14651.

[Shuichi Ihara]

yujian does head of https://review.whamcloud.com/#/c/45566/ contain all considerations of linux-5.14?
I'm trying to build patch 45566 against 5.14.0-1018-oem (Ubuntu20.04), but still getting bunch of errors.

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/45814/
Subject: LU-15220 utils: fix gcc-11 -Werror=mismatched-dealloc error
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 64ba2b18349b56c5d7ade944ea713bade84bc02e

[Jian Yu]

Sure, Patrick. Thank you.

[Patrick Farrell]

Jian,

Can you take that patch and test it on the newer kernels?  I don't have the right environments available.  Thanks!