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Date:   Tue, 28 May 2019 09:18:30 +0530
From:   Sahitya Tummala <>
To:     Theodore Ts'o <>
Cc:     Andreas Dilger <>,
Subject: Re: fsync_mode mount option for ext4

Hi Ted,

On Mon, May 27, 2019 at 11:40:07PM -0400, Theodore Ts'o wrote:
> On Tue, May 28, 2019 at 08:52:57AM +0530, Sahitya Tummala wrote:
> > Hi Ted, Andreas,
> > 
> > Do you think this mount option "fsync_mode=nobarrier"
> > can be added for EXT4 as well like in F2FS? Please
> > share your thoughts on this.
> > 
> >
> Ext4 already has the nobarrier mount option.

Yes, but fsync_mode=nobarrier is little different than
a general nobarrier option. The fsync_mode=nobarrier is
only controlling the flush policy for fsync() path, unlike
the nobarrier mount option which is applicable at all
places in the filesystem.


> Cheers,
>      	     	     	       	     - Ted

Sent by a consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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