Date: Fri, 14 Oct 2011 14:49:41 GMT From: John Baldwin <jhb@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 200200 for review Message-ID: <201110141449.p9EEnfD4068184@skunkworks.freebsd.org>
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http://p4web.freebsd.org/@@200200?ac=10 Change 200200 by jhb@jhb_jhbbsd on 2011/10/14 14:49:12 Note unexpected behavior. Affected files ... .. //depot/projects/fadvise/sys/kern/vfs_syscalls.c#5 edit Differences ... ==== //depot/projects/fadvise/sys/kern/vfs_syscalls.c#5 (text+ko) ==== @@ -4946,6 +4946,9 @@ * Apply the request to the backing VM object. Note * that the FADV_* constants map directly to the same * madvise(2) constants. + * + * XXX: madvise(MADV_WILLNEED) will not do readahead on + * a file, perhaps FADV_WILLNEED should. */ start = trunc_page(uap->offset); end = round_page(end);
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