linux-kernel - Re: [PATCH -next 2/2] ext4: adjust fast commit disable judgement order in ext4_fc_track

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20220915145118.po7abyz4tnmigpyk@quack3>
Date:   Thu, 15 Sep 2022 16:51:18 +0200
From:   Jan Kara <jack@...e.cz>
To:     yebin <yebin10@...wei.com>
Cc:     Jan Kara <jack@...e.cz>, tytso@....edu, adilger.kernel@...ger.ca,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next 2/2] ext4: adjust fast commit disable judgement
 order in ext4_fc_track_inode

On Thu 15-09-22 22:42:58, yebin wrote:
> 
> 
> On 2022/9/15 22:30, Jan Kara wrote:
> > On Thu 15-09-22 21:56:11, Ye Bin wrote:
> > > Judge filesystem if fast commit disabled before test inode's journal mode.
> > > 
> > > Signed-off-by: Ye Bin <yebin10@...wei.com>
> > Probably makes sense but is there any particular reason why you do this?
> > 
> > 								Honza
> 
> I think the impact of fast commit on normal processes should be minimized.

Yeah, I guess you mean when fastcommit is actually disabled. Makes sense
but please add it to the changelog. With that feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza


> 
> > 
> > > ---
> > >   fs/ext4/fast_commit.c | 6 +++---
> > >   1 file changed, 3 insertions(+), 3 deletions(-)
> > > 
> > > diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
> > > index eadab945b856..9217a588afd1 100644
> > > --- a/fs/ext4/fast_commit.c
> > > +++ b/fs/ext4/fast_commit.c
> > > @@ -577,15 +577,15 @@ void ext4_fc_track_inode(handle_t *handle, struct inode *inode)
> > >   	if (S_ISDIR(inode->i_mode))
> > >   		return;
> > > +	if (ext4_fc_disabled(inode->i_sb))
> > > +		return;
> > > +
> > >   	if (ext4_should_journal_data(inode)) {
> > >   		ext4_fc_mark_ineligible(inode->i_sb,
> > >   					EXT4_FC_REASON_INODE_JOURNAL_DATA, handle);
> > >   		return;
> > >   	}
> > > -	if (ext4_fc_disabled(inode->i_sb))
> > > -		return;
> > > -
> > >   	if (ext4_test_mount_flag(inode->i_sb, EXT4_MF_FC_INELIGIBLE))
> > >   		return;
> > > -- 
> > > 2.31.1
> > > 
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR