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Message-ID: <878w6bphc2.fsf@basil.nowhere.org> Date: Sat, 19 Jun 2010 10:17:01 +0200 From: Andi Kleen <andi@...stfloor.org> To: Michael Rubin <mrubin@...gle.com> Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-mm@...ck.org, jack@...e.cz, akpm@...ux-foundation.org, david@...morbit.com, hch@....de, axboe@...nel.dk Subject: Re: [PATCH 3/3] writeback: tracking subsystems causing writeback Michael Rubin <mrubin@...gle.com> writes: > > # cat /sys/block/sda/bdi/writeback_stats > balance dirty pages 0 > balance dirty pages waiting 0 > periodic writeback 92024 > periodic writeback exited 0 > laptop periodic 0 > laptop or bg threshold 0 > free more memory 0 > try to free pages 271 > syc_sync 6 > sync filesystem 0 That exports a lot of kernel internals in /sys, presumably read by some applications. What happens with the applications if the kernel internals ever change? Will the application break? It would be bad to not be able to change the kernel because of such an interface. -Andi -- ak@...ux.intel.com -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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