Messages in this thread | | | From | Saeed Mirzamohammadi <> | Subject | [PATCH 5.4 0/1] mm: allow a controlled amount of unfairness in the page lock | Date | Mon, 21 Aug 2023 15:25:45 -0700 |
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We observed a 35% of regression running phoronix pts/ramspeed and also 16% with unixbench. Regression is caused by the following commit: dd0f194cfeb5 | mm: rewrite wait_on_page_bit_common() logic
Backporting this fixes the regression (this is already in 5.9+): - 5ef64cc8987a mm: allow a controlled amount of unfairness in the page lock
Linus Torvalds (1): mm: allow a controlled amount of unfairness in the page lock
include/linux/mm.h | 2 + include/linux/wait.h | 2 + kernel/sysctl.c | 8 +++ mm/filemap.c | 160 ++++++++++++++++++++++++++++++++++--------- 4 files changed, 141 insertions(+), 31 deletions(-)
-- 2.41.0
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