docs: Specify that cache-clean-interval is only supported in Linux

Make it clear that having Linux is a hard requirement for this
feature.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2016-11-25 13:27:46 +02:00 committed by Kevin Wolf
parent a8b99dd516
commit 8f57758311
1 changed files with 3 additions and 2 deletions

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@ -160,5 +160,6 @@ If unset, the default value for this parameter is 0 and it disables
this feature.
Note that this functionality currently relies on the MADV_DONTNEED
argument for madvise() to actually free the memory, so it is not
useful in systems that don't follow that behavior.
argument for madvise() to actually free the memory. This is a
Linux-specific feature, so cache-clean-interval is not supported in
other systems.