Messages in this thread | | | Date | Tue, 16 Nov 2004 08:11:04 -0800 | From | Hans Reiser <> | Subject | Re: vm-pageout-throttling.patch: hanging in throttle_vm_writeout/blk_congestion_wait |
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Sami Farin wrote:
>On Mon, Nov 15, 2004 at 09:56:29PM +0000, Hugh Dickins wrote: > > >>On Mon, 15 Nov 2004, Sami Farin wrote: >> >> >>>this time I had some swapspace on /dev/loop1 (file-backed, reiserfs, >>>loop-AES-2.2d)... I think (!) it caused this deadlock. >>> >>> >>That's not at all surprising. See the swap_extent work Andrew did >>for 2.5 (in mm/swapfile.c), by which swap to a swapfile now avoids >>the filesystem altogether (except while swapon prepares the map of >>disk blocks). By swapping to a loop device over a file, you're >>sneaking past his work, and putting the filesystem back under swap. >> >>
Does Andrew's approach prevent putting swap on a compressed file (useful for reiser4 once the compression plugin is stable, not reiserfs)? (And no, I don't have any idea what the performance effect of that would be before it is tried and benchmarked....) - 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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