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[0/3] mmu_notifier fs fs_reclaim lockdep annotations

Message ID 20201120095445.1195585-1-daniel.vetter@ffwll.ch (mailing list archive)
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Series mmu_notifier fs fs_reclaim lockdep annotations | expand

Message

Daniel Vetter Nov. 20, 2020, 9:54 a.m. UTC 
Hi all,

I've finally gotten around to polish of my lockdep anntotation patches
from a while ago:

https://lore.kernel.org/dri-devel/20200610194101.1668038-1-daniel.vetter@ffwll.ch/

That patch has been in -mm for a few days already, but it immediately hit
some issues with xfs.

Changes since v2:
- Now hopefully the bug that bombed xfs fixed.
- With unit-tests (that's the part I really wanted and never got to)
- might_alloc() helper thrown in for good.

The unit test stuff was the major drag until I figured out how to make
this very easy with the locking selftests.

Comments, review, testing all very much welcome.

Cheers, Daniel

Daniel Vetter (3):
  mm: Track mmu notifiers in fs_reclaim_acquire/release
  mm: Extract might_alloc() debug check
  locking/selftests: Add testcases for fs_reclaim

 include/linux/sched/mm.h | 16 ++++++++++++++
 lib/locking-selftest.c   | 47 ++++++++++++++++++++++++++++++++++++++++
 mm/mmu_notifier.c        |  7 ------
 mm/page_alloc.c          | 31 ++++++++++++++++----------
 mm/slab.h                |  5 +----
 mm/slob.c                |  6 ++---
 6 files changed, 86 insertions(+), 26 deletions(-)