Linux-ext4 Archive on lore.kernel.org
 help / color / Atom feed
From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
To: Andreas Dilger <adilger.kernel@dilger.ca>,
	linux-ext4@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>,
	linux-kernel@vger.kernel.org
Cc: Dmitry Monakhov <dmtrmonakhov@yandex-team.ru>,
	Eric Whitney <enwlinux@gmail.com>
Subject: Re: [PATCH] ext4: deaccount delayed allocations at freeing inode in ext4_evict_inode()
Date: Tue, 29 Oct 2019 10:20:34 +0300
Message-ID: <427b6718-0893-0f0f-f5db-5ad45b949a09@yandex-team.ru> (raw)
In-Reply-To: <157233344808.4027.17162642259754563372.stgit@buzz>

On 29/10/2019 10.17, Konstantin Khlebnikov wrote:
> If inode->i_blocks is zero then ext4_evict_inode() skips ext4_truncate().
> Delayed allocation extents are freed later in ext4_clear_inode() but this
> happens when quota reference is already dropped. This leads to leak of
> reserved space in quota block, which disappears after umount-mount.
> 
> This seems broken for a long time but worked somehow until recent changes
> in delayed allocation.

FYI, perf cannot correctly parse related perf events without this:

https://lore.kernel.org/lkml/157228145325.7530.4974461761228678289.stgit@buzz/

  reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-29  7:17 Konstantin Khlebnikov
2019-10-29  7:20 ` Konstantin Khlebnikov [this message]
2019-11-07 17:58 ` Konstantin Khlebnikov
2019-11-08  2:08 ` Ritesh Harjani
2019-11-08  8:30   ` Konstantin Khlebnikov
2019-11-08 11:54     ` Jan Kara
2019-11-15  0:27       ` Theodore Y. Ts'o

Reply instructions:

You may reply publically 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=427b6718-0893-0f0f-f5db-5ad45b949a09@yandex-team.ru \
    --to=khlebnikov@yandex-team.ru \
    --cc=adilger.kernel@dilger.ca \
    --cc=dmtrmonakhov@yandex-team.ru \
    --cc=enwlinux@gmail.com \
    --cc=linux-ext4@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=tytso@mit.edu \
    /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

Linux-ext4 Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-ext4/0 linux-ext4/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-ext4 linux-ext4/ https://lore.kernel.org/linux-ext4 \
		linux-ext4@vger.kernel.org
	public-inbox-index linux-ext4

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-ext4


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git