Correct the description of MADV_DONTNEED. Specifically, after using
MADV_DONTNEED, while pages faults on the affected address range are more likely to occur, they are not guaranteed to occur. MFC after: 3 days
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=285428
@ -28,7 +28,7 @@
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.\" @(#)madvise.2 8.1 (Berkeley) 6/9/93
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.\" $FreeBSD$
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.\"
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.Dd January 30, 2014
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.Dd July 12, 2015
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.Dt MADVISE 2
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.Os
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.Sh NAME
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@ -79,9 +79,9 @@ pages in from backing store, but quickly map the pages already in memory
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into the calling process.
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.It Dv MADV_DONTNEED
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Allows the VM system to decrease the in-memory priority
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of pages in the specified range.
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Additionally future references to
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this address range will incur a page fault.
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of pages in the specified address range.
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Consequently, future references to this address range are more likely
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to incur a page fault.
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.It Dv MADV_FREE
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Gives the VM system the freedom to free pages,
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and tells the system that information in the specified page range
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