linux-kernel - Re: [PATCH 26/32] ext4: cleanup transaction restarts during inode deletion

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Message-ID: <20170622154336.5ry5lzhw3yv27u4q@thunk.org>
Date:   Thu, 22 Jun 2017 11:43:36 -0400
From:   Theodore Ts'o <tytso@....edu>
To:     Tahsin Erdogan <tahsin@...gle.com>
Cc:     Andreas Dilger <adilger@...ger.ca>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Jan Kara <jack@...e.cz>, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 26/32] ext4: cleanup transaction restarts during inode
 deletion

On Wed, Jun 21, 2017 at 06:49:33PM -0700, Tahsin Erdogan wrote:
> During inode deletion, journal credits that will be needed are hard to
> determine, that is why we have journal extend/restart calls in several
> places. Whenever a transaction is restarted, filesystem must be in a
> consistent state because there is no atomicity guarantee beyond a
> restart call.
> 
> Add ext4_xattr_ensure_credits() helper function which takes care of
> journal extend/restart logic. It also handles getting jbd2 write access
> and dirty metadata calls. This function is called at every iteration of
> handling an ea_inode reference.
> 
> Signed-off-by: Tahsin Erdogan <tahsin@...gle.com>

Applied, thanks.

					- Ted