Hello embedded Linux developers, Richard Weinberger has recently submitted a set of patches to add "fastmap" scanning to UBIFS, so that an UBI attach operation can be done much more quickly. This is related to contract work funded by the CE Workgroup to improve UBIFS mount times.
At http://marc.info/?l=linux-kernel&m=133710204228214&w=2 Richard provides some benchmark numbers showing the improvements. (They are very good). This is also the first message in his v4 release of the patches. If you are using UBIFS in your products, and care about bootup time, you should definitely go check out these patches. Please test them and send any bug reports or other feedback to Richard on the kernel mailing list. Thanks, -- Tim -------- Original Message -------- Subject: Fastmap - please, review and test Date: Tue, 15 May 2012 23:54:33 -0700 From: Artem Bityutskiy <dedeki...@gmail.com> Reply-To: dedeki...@gmail.com <dedeki...@gmail.com> To: Shmulik Ladkani <shmulik.ladk...@gmail.com> CC: Richard Weinberger <rich...@nod.at>, "linux-...@lists.infradead.org" <linux-...@lists.infradead.org>, "heinz.eg...@linutronix.de" <heinz.eg...@linutronix.de>, "t...@linutronix.de" <t...@linutronix.de>, "Bird, Tim" <tim.b...@am.sony.com>, "linux-ker...@vger.kernel.org" <linux-ker...@vger.kernel.org> On Tue, 2012-05-15 at 22:46 +0300, Shmulik Ladkani wrote: > On Tue, 15 May 2012 19:11:04 +0200 Richard Weinberger <rich...@nod.at> wrote: > > TODO: > > - Artem is fully happy with the current on-flash layout, > > maybe I can merge the erase counters into the EBA table > > - Get a full review :) > > I'd be glad to take a deep look of the code. > > Hopefully I'll get into it in the following days. Thanks Shmulik - I appreciate any help as much as Richard. I am busy and my job now has nothing to do with MTD/UBI/UBIFS, and I have limited time for review. There were many people who wanted faster UBI, and I'd ask them to participate now - review, test, etc. -- Best Regards, Artem Bityutskiy
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