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Message-Id: <200609131359.04972.a1426z@gawab.com> Date: Wed, 13 Sep 2006 13:59:04 +0300 From: Al Boldi <a1426z@...ab.com> To: linux-kernel@...r.kernel.org Subject: Re: What's in linux-2.6-block.git Jens Axboe wrote: > This lists the main features of the 'block' branch, which is bound for > Linus when 2.6.19 opens: > > - Splitting of request->flags into two parts: > - cmd type > - modified flags > Right now it's a bit of a mess, splitting this up invites a cleaner > usage and also enables us to implement generic "messages" passed on > the regular queue for the device. > > - Abstract out the request back merging and put it into the core io > scheduler layer. Cleans up all the io schedulers, and noop gets > merging for "free". > > - Abstract out the rbtree sorting. Gets rid of duplicated code in > as/cfq/deadline. > > - General shrinkage of the request structure. > > - Killing dynamic rq private structures in deadline/as/cfq. This should > speed up the io path somewhat, as we avoid allocating several > structures (struct request + scheduler private request) for each io > request. > > - meta data io logging for blktrace. > > - CFQ improvements. > > - Make the block layer configurable through Kconfig (David Howells). > > - Lots of cleanups. Does it also address the strange "max_sectors_kb<>192 causes a 50%-slowdown" problem? Thanks! -- Al - 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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