All of lore.kernel.org
 help / color / mirror / Atom feed
From: Richard Weinberger <richard@nod.at>
To: hujianyang <hujianyang@huawei.com>, dedekind1@gmail.com
Cc: linux-mtd <linux-mtd@lists.infradead.org>
Subject: Re: [PATCH resend] UBIFS: return -EINVAL if first log leb is empty
Date: Mon, 02 Feb 2015 09:20:03 +0100	[thread overview]
Message-ID: <54CF3333.7050909@nod.at> (raw)
In-Reply-To: <54CEEAC1.2080403@huawei.com>

Am 02.02.2015 um 04:10 schrieb hujianyang:
> Another problem. Someone <markus.heininger@online.de> asked:
> 
> "UBIFS: Is it possible to get the compressed size of a file?"
> 
> I think it's an interesting problem. Actually we used to separate an UBI
> device into several volumes for space management reason. So could we
> realize the compressed size getting mechanism and import *quota* to UBIFS
> itself.

You can get the actual size by accumulating the UBIFS data node sizes.
But this means that you have to load the actual data node which is rather
expensive. I had a short chat with Artem on this, we agreed that a nice solution
would be to store the actual size in an inode. But that is a non-trivial change
to UBIFS.

Thanks,
//richard

  reply	other threads:[~2015-02-02  8:20 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-31  3:43 [PATCH resend] UBIFS: return -EINVAL if first log leb is empty hujianyang
2015-01-31  9:51 ` Artem Bityutskiy
2015-01-31 10:34   ` hujianyang
2015-01-31 12:16     ` Artem Bityutskiy
2015-02-02  3:10       ` hujianyang
2015-02-02  8:20         ` Richard Weinberger [this message]
2015-02-02  9:00           ` hujianyang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=54CF3333.7050909@nod.at \
    --to=richard@nod.at \
    --cc=dedekind1@gmail.com \
    --cc=hujianyang@huawei.com \
    --cc=linux-mtd@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.