[LU-10467] use standard linux wait_event macros

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

Description

Simplify l_wait_info() using the linux wait_event infrastructure.

Improvements are:

   - new wait_event_idle* macros are now in include/linux/wait.h which

     Ack from peterz.

   - all waits are now TASK_IDLE or TASK_INTERRUPTIBLE and so don't

     affect the load average.  There is no need to choose whether load

     is appropriate or not in each case.

   - all l_wait_event() users are handled so l_wait_event() is

     removed.  The one case I had left out before uses

     wait_event_idle_exclusive() with and option of using

     wait_event_idle_exclusive_lifo() is that ever gets approved.

Issue Links

• is related to: LU-10824 ll_umount being improper use of cached mountpoint from mount time
• is related to: LU-1882 conf-sanity test_45: umount2: Device or resource busy
• is related to: LU-8841 Replace l_wait_info calls that use zeroed info parameters
• is related to: LU-12362 kernel warning 'do not call blocking ops when !TASK_RUNNING ' in ptlrpcd
• is related to: LU-12436 Memory allocation failure error dropped
• is related to: LU-12511 Prepare lustre for adoption into the linux kernel
• is related to: LU-6431 do not call blocking ops when !TASK_RUNNING
• is related to: LU-4423 Tracking of patches from upstream kernel to Lustre client

Comments

[Gerrit Updater]

Neil Brown ([e-mail]) uploaded a new patch: https://review.whamcloud.com/37610
Subject: LU-10467 lfsck: use wait_event_idle()
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 646c4bb32ba8904dd0dea5aadcaadae4550dca44

[Gerrit Updater]

Neil Brown ([e-mail]) uploaded a new patch: https://review.whamcloud.com/37609
Subject: LU-10467 ldlm: use wait_event_idle() instead of l_wait_event
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: ec5ea2af5bfb940a8ba99633ecd826d2d074c395

[Gerrit Updater]

James Simmons ([e-mail]) uploaded a new patch: https://review.whamcloud.com/37488
Subject: LU-10467 mdc: change ssleep to msleep_interruptible
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: ed3e547e98ee6e64fabf3dbabcb51b04618828b4

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35986/
Subject: LU-10467 ptlrpc: convert use of l_wait_event_exclusive_head()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: fb291dbf72ecd32847f1499776a441126f28e9bf

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35985/
Subject: LU-10467 ldlm: convert waiting in ldlm_completion_ast()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 366959b8cba5b022b4c1ea9aaba47ac14d4fff7e

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35984/
Subject: LU-10467 ldlm: convert waiting in ldlm_flock_completion_ast()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: f10a447fb4ca44d396f7f17bdceedfbd03ab2581

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35982/
Subject: LU-10467 ptlrpc: convert waiters on set->set_waitq
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 4e5855ae4dea7954ce1891cd23abce033fe23f03

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35980/
Subject: LU-10467 lustre: convert users of back_to_sleep()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: ca6c35cab141597809c6f3a58102fac8ac86104a

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35973/
Subject: LU-10467 lustre: convert most users of LWI_TIMEOUT_INTERVAL()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 5e30a2c06176f50f5e17aba68fdae7e38d922d33

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/36102/
Subject: LU-10467 obdclass: convert waiting in cl_sync_io_wait().
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: d6ce546eb7e250237141d3a11380f9d5389c50eb

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35981/
Subject: LU-10467 ptlrpc: refactor waiting in ptlrpc_set_wait()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 609246d13db6de87d1cf32b34607346ff56dd30d