From: Artem Bityutskiy <dedekind1@gmail.com>
To: Richard Weinberger <richard@nod.at>
Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/4] UBI: Fastmap: Care about the protection queue
Date: Mon, 20 Oct 2014 19:09:10 +0300 [thread overview]
Message-ID: <1413821350.7906.392.camel@sauron.fi.intel.com> (raw)
In-Reply-To: <54453178.3050903@nod.at>
On Mon, 2014-10-20 at 17:59 +0200, Richard Weinberger wrote:
> > Also, say, PEB X is in the work queue waiting for erasure. Fastmap comes
> > along and saves it as "must be erased" in the fastmap. Fastmap finishes
> > its job, PEB X gets erased, and I write my data there, so PEB X is
> > referred to by LEB Y. Now I have power cut. Then I attach the flash
> > again. Surely it is not that fastmap just erases PEB X and I lose the
> > contents of LEB Y?
>
> This cannot happen. If X is erased you cannot write data do it. I must first go
> thought the pool and the pool is scanned while attaching.
Just noticed from the code that we first add PEBs to the erase list, and
then we go an scan the pools.
next prev parent reply other threads:[~2014-10-20 16:09 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-29 22:20 UBI: Fastmap fixes - round one Richard Weinberger
2014-09-29 22:20 ` [PATCH 1/4] UBI: Ensure that all fastmap work is done upon WL shutdown Richard Weinberger
2014-09-30 6:26 ` Artem Bityutskiy
2014-09-30 6:58 ` Richard Weinberger
2014-09-30 7:53 ` Bityutskiy, Artem
2014-09-30 8:07 ` Richard Weinberger
2014-10-03 12:52 ` Artem Bityutskiy
2014-10-02 13:05 ` Tanya Brokhman
2014-10-02 13:18 ` Richard Weinberger
2014-09-29 22:20 ` [PATCH 2/4] UBI: Fastmap: Calc fastmap size correctly Richard Weinberger
2014-10-02 13:14 ` Tanya Brokhman
2014-10-02 13:18 ` Richard Weinberger
2014-10-02 14:04 ` Tanya Brokhman
2014-10-03 14:38 ` Artem Bityutskiy
2014-09-29 22:20 ` [PATCH 3/4] UBI: Fastmap: Care about the protection queue Richard Weinberger
2014-10-02 13:28 ` Tanya Brokhman
2014-10-02 13:32 ` Richard Weinberger
2014-10-02 14:14 ` Tanya Brokhman
2014-10-03 14:31 ` Artem Bityutskiy
2014-10-03 19:06 ` Richard Weinberger
2014-10-13 13:17 ` Artem Bityutskiy
2014-10-13 14:30 ` Richard Weinberger
2014-10-13 15:23 ` Artem Bityutskiy
2014-10-13 15:28 ` Bityutskiy, Artem
2014-10-13 21:04 ` Richard Weinberger
2014-10-14 10:23 ` Artem Bityutskiy
2014-10-14 12:21 ` Tanya Brokhman
2014-10-14 13:02 ` Artem Bityutskiy
2014-10-14 13:35 ` Tanya Brokhman
2014-10-16 10:06 ` Richard Weinberger
2014-10-16 10:15 ` Artem Bityutskiy
2014-10-16 11:07 ` Richard Weinberger
2014-10-20 14:46 ` Artem Bityutskiy
2014-10-20 15:17 ` Richard Weinberger
2014-10-20 15:40 ` Artem Bityutskiy
2014-10-20 15:59 ` Richard Weinberger
2014-10-20 16:09 ` Artem Bityutskiy [this message]
2014-10-20 16:17 ` Richard Weinberger
2014-10-20 20:46 ` Richard Weinberger
2014-09-29 22:20 ` [PATCH 4/4] UBI: Fastmap: Ensure that only one fastmap work is scheduled Richard Weinberger
2014-09-30 6:45 ` Bityutskiy, Artem
2014-09-30 6:59 ` Richard Weinberger
2014-09-30 7:39 ` Bityutskiy, Artem
2014-09-30 7:44 ` Richard Weinberger
2014-10-02 14:22 ` Tanya Brokhman
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