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| author | Chris Down <[email protected]> | 2020-03-22 01:22:20 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-03-22 01:56:06 +0000 |
| commit | d397a45fc741c80c32a14e2de008441e9976f50c (patch) | |
| tree | 8cfe10ae8aa3e16783822ad867e1d5b8b615228a /drivers/iio/trigger/stm32-timer-trigger.c | |
| parent | page-flags: fix a crash at SetPageError(THP_SWAP) (diff) | |
| download | kernel-d397a45fc741c80c32a14e2de008441e9976f50c.tar.gz kernel-d397a45fc741c80c32a14e2de008441e9976f50c.zip | |
mm, memcg: fix corruption on 64-bit divisor in memory.high throttling
Commit 0e4b01df8659 had a bunch of fixups to use the right division
method. However, it seems that after all that it still wasn't right --
div_u64 takes a 32-bit divisor.
The headroom is still large (2^32 pages), so on mundane systems you
won't hit this, but this should definitely be fixed.
Fixes: 0e4b01df8659 ("mm, memcg: throttle allocators when failing reclaim over memory.high")
Reported-by: Johannes Weiner <[email protected]>
Signed-off-by: Chris Down <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Roman Gushchin <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Nathan Chancellor <[email protected]>
Cc: <[email protected]> [5.4.x+]
Link: http://lkml.kernel.org/r/80780887060514967d414b3cd91f9a316a16ab98.1584036142.git.chris@chrisdown.name
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'drivers/iio/trigger/stm32-timer-trigger.c')
0 files changed, 0 insertions, 0 deletions