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Rik van Riel <riel@redhat.com> wrote: > > Still untested, but posting the concept here anyway, since this > could explain a lot... > > OOM kills have been observed with 70% of the pages in lowmem being > in the writeback state. If we count those pages in sc->nr_scanned, > the VM should throttle and wait for IO completion, instead of OOM > killing. > > Signed-off-by: Rik van Riel <riel@redhat.com> > > --- linux-2.6.9/mm/vmscan.c.screclaim 2005-01-03 12:17:56.547148905 -0500 > +++ linux-2.6.9/mm/vmscan.c 2005-01-03 12:18:16.855965416 -0500 > @@ -376,10 +376,10 @@ > > BUG_ON(PageActive(page)); > > + sc->nr_scanned++; > if (PageWriteback(page)) > goto keep_locked; > > - sc->nr_scanned++; Patch looks very sane. It in fact restores that which we were doing until 12 June 2004, when the rampant `struct scan_control' depredations violated the tree. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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