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authorDavid Rientjes <rientjes@google.com>2011-09-22 14:11:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-09-22 14:27:14 -0700
commite369fde1af20c7c67acff3bc4a36e451f38ae7d0 (patch)
tree7918d78ffafc79ea020ffb2115522ecfaef81945 /Documentation/vm/transhuge.txt
parenta7f4d00a82feb5b311f765bf9522bc55bee0684f (diff)
thp: fix khugepaged defrag tunable documentation
Commit e27e6151b154 ("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>
Diffstat (limited to 'Documentation/vm/transhuge.txt')
-rw-r--r--Documentation/vm/transhuge.txt7
1 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/vm/transhuge.txt b/Documentation/vm/transhuge.txt
index 0924aaca330..29bdf62aac0 100644
--- a/Documentation/vm/transhuge.txt
+++ b/Documentation/vm/transhuge.txt
@@ -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: