[LU-12400] Support for linux kernel version 5.2

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Labels: LTS12
• Assignee: Shaun Tancheff
• Reporter: Shaun Tancheff

Description

Support for building lustre / ldiskfs with current upstream kernels

Added iov_iter_type needed to iterate over iovec
vm_fault_t used for (some) vm_operations_struct handlers
SunRPC cache hash lock is now a spinlock_t, readers are now all RCU

ldiskfs:
__ext4_find_entry became a helper function for ext4_find_entry
[breaking a few ldiskfs patches]

Multi-page bvec has landed, use bvec_iter_all

extfs_dirhash now requires a directory (for case-insensitive directories).

ib_sg_dma_address() and ib_sg_dma_len() are removed

With CONFIG_ARCH_STACKWALK stack_trace_save_tsk() is not exported.

y2038: SO_SNDTIMEO, SO_RCVTIMEO removed

legacy 'get_ds()' function is removed

Use the new vm_fault_t type (optional)

 

Issue Links

• is related to: LU-14463 stack traces not being printed to console on RHEL8

Comments

[Gerrit Updater]

Jian Yu ([e-mail]) uploaded a new patch: https://review.whamcloud.com/40378
Subject: LU-12400 libcfs: save_stack_trace_tsk if ARCH_STACKWALK
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: 05bf1e902469a6b9ac4407573991890c9cb25fd6

[Gerrit Updater]

Jian Yu ([e-mail]) uploaded a new patch: https://review.whamcloud.com/40377
Subject: LU-12400 osd-ldiskfs: get rid of legacy 'get_ds()' function
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: fa5f2d7c374dfed6b4ea2ba27c4cada0f64326a1

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/38483/
Subject: LU-12400 ptlrpc: Sun RPC changes for RCU locking
Project: fs/lustre-release
Branch: b2_12
Current Patch Set:
Commit: c3e1f86f3a50cfa3762b63fb0f058af5036238ad

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/38478/
Subject: LU-12400 llite: Use the new vm_fault_t type
Project: fs/lustre-release
Branch: b2_12
Current Patch Set:
Commit: a206d1ef12806cebc6c8d0aa010aa915114e8213

[Gerrit Updater]

Jian Yu ([e-mail]) uploaded a new patch: https://review.whamcloud.com/38483
Subject: LU-12400 ptlrpc: Sun RPC changes for RCU locking
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: ddc396f141ea47023763e241eef8e3fc5931b345

[Gerrit Updater]

Jian Yu ([e-mail]) uploaded a new patch: https://review.whamcloud.com/38478
Subject: LU-12400 llite: Use the new vm_fault_t type
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: c09592fc8d80f5d3e7ce066c5569be9c3c02ed9e

[Shaun Tancheff]

Everything is landed for master. ldiskfs changes were deferred/migrated to 5.4 as that is flagged as a longterm:

https://www.kernel.org/category/releases.html

 

[Joseph Gmitter (Inactive)]

Are there more patches coming?

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/36330/
Subject: LU-12400 lnet: Infiniband sg_dma changes for linux 5.1
Project: fs/lustre-release
Branch: b2_12
Current Patch Set:
Commit: 7dd298fc7717143af5f30c44059fb678307a67a1

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35518/
Subject: LU-12400 zfs: zfs mainline 0.8+ with mainline (5.2) kernel
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 424f3d1ac0ce065b77058afb093f791275ecf999