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Date: Thu, 30 Aug 2018 15:41:03 +0200 From: Sascha Hauer <s.hauer@...gutronix.de> To: Richard Weinberger <richard@....at> Cc: linux-mtd@...ts.infradead.org, David Gstir <david@...ma-star.at>, kernel@...gutronix.de, linux-kernel@...r.kernel.org Subject: Re: [PATCH 14/25] ubifs: Add authentication nodes to journal On Wed, Aug 29, 2018 at 04:54:30PM +0200, Richard Weinberger wrote: > Am Mittwoch, 29. August 2018, 16:38:34 CEST schrieb Sascha Hauer: > > On Mon, Aug 27, 2018 at 10:48:26PM +0200, Richard Weinberger wrote: > > > > release_head(c, BASEHD); > > > > kfree(dent); > > > > + ubifs_add_dirt(c, lnum, ubifs_auth_node_sz(c)); > > > > > > You have to account it immediately because while a commit you have no longer > > > a reference to them? > > > Upon replay you should have since you scan LEBs anyway. > > > > What do you mean here? Is that a suggestion to change something? > > I don't fully understand how you keep the lprops dirty counter correct for > auth nodes. Hence the question. > > Auth nodes are not referenced by the index, so you have to keep track of > them manually. Yes. That's why I call ubifs_add_dirt(c, lnum, ubifs_auth_node_sz(c)) each time I create an auth node. > Is your current approach "mark them dirty immediately and rely on LPT commit" > to not get lost of an auth node? Yes, I mark the auth nodes dirty in the assumption that the correct values are written on a LPT commit. > > I expected auth nodes getting dirtied also during journal reply. Yes, this happens in replay.c replay_bud(). "used" gets increased with every node found except when it's an auth node. Here "used" is not increased, the result is that the auth node adds to the dirty space. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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