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thp: fix khugepaged defrag tunable documentation

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Commit e27e6151b1 ("mm/thp: use conventional format for boolean
attributes") changed

  /sys/kernel/mm/transparent_hugepage/khugepaged/defrag

to be tuned by using 1 (enabled) or 0 (disabled) instead of "yes" and
"no", respectively.

Update the documentation.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Rientjes 2011-09-22 14:11:38 -07:00 committed by Linus Torvalds
parent a7f4d00a82
commit e369fde1af
1 changed files with 4 additions and 3 deletions
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7
Documentation/vm/transhuge.txt
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@ -123,10 +123,11 @@ be automatically shutdown if it's set to "never".
khugepaged runs usually at low frequency so while one may not want to
invoke defrag algorithms synchronously during the page faults, it
should be worth invoking defrag at least in khugepaged. However it's
also possible to disable defrag in khugepaged:
also possible to disable defrag in khugepaged by writing 0 or enable
defrag in khugepaged by writing 1:
echo yes >/sys/kernel/mm/transparent_hugepage/khugepaged/defrag
echo no >/sys/kernel/mm/transparent_hugepage/khugepaged/defrag
echo 0 >/sys/kernel/mm/transparent_hugepage/khugepaged/defrag
echo 1 >/sys/kernel/mm/transparent_hugepage/khugepaged/defrag
You can also control how many pages khugepaged should scan at each
pass: