Andrew Morton wrote: > On Tue, 06 Mar 2007 12:10:49 +0000 > P__draig Brady <[EMAIL PROTECTED]> wrote: >> Perhaps one could possibly just evict pages with _mapcount==0 ? > > That is the present fadvise(FADV_DONTNEED) behaviour.
Ah right. It doesn't invalidate page_mapped() pages. If that means it doesn't invalidate pages previously cached by other processes, then great. However I think what I meant though was fadvise(FADV_DONTNEED) should only invalidate pages where page_count()<=1 >From include/linux/mm.h " For pages belonging to inodes, the page_count() is the number of attaches, plus 1 if `private' contains something, plus one for the page cache itself." cheers, Pádraig. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
