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Date: Mon, 19 Aug 2013 08:04:12 -0700 From: Frank Mayhar <fmayhar@...gle.com> To: Mike Snitzer <snitzer@...hat.com> Cc: linux-kernel@...r.kernel.org, dm-devel@...hat.com Subject: Re: dm: Make MIN_IOS, et al, tunable via sysctl. On Mon, 2013-08-19 at 09:40 -0400, Mike Snitzer wrote: > On Sat, Aug 17 2013 at 8:30am -0400, > Alasdair G Kergon <agk@...hat.com> wrote: > > > On Fri, Aug 16, 2013 at 03:55:21PM -0700, Frank Mayhar wrote: > > > This patch fixes that by changing the hardcoded MIN_IOS (and certain > > > other) #defines in dm-crypt, dm-io, dm-mpath, dm-snap and dm itself to > > > sysctl-modifiable values. This lets us change the size of these pools > > > on the fly, we can reduce the size of the pools and reduce memory > > > pressure. > > > > Did you consider using module_param_named()? > > (E.g. dm_verity_prefetch_cluster in dm-verity.) > > Right, I'd prefer to see this be implemented in terms of > module_param_named(). Aside from dm-verity, dm-bufio.c makes the most > use of it. Yeah, I can do that. -- Frank Mayhar 310-460-4042 -- 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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