On Wed, Jul 24, 2013 at 10:06:53AM -0700, Andy Lutomirski wrote: > > Hi Andy, if I understand you correctly "file-backed pages" are carried > > in pte with _PAGE_FILE bit set and the swap soft-dirty bit won't be > > used on them but _PAGE_SOFT_DIRTY will be set on write if only I've > > not missed something obvious (Pavel?). > > If I understand this stuff correctly, the vmscan code calls > try_to_unmap when it reclaims memory, which makes its way into > try_to_unmap_one, which clears the pte (and loses the soft-dirty bit).
Indeed, I was so stareing into swap that forgot about files. I'll do a separate patch for that, thanks! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
