linux-kernel - Re: [PATCH] ext4: Remove expensive flush on fast commit

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Message-ID: <X/++OfdtJSykRIeB@mit.edu>
Date:   Wed, 13 Jan 2021 22:44:57 -0500
From:   "Theodore Ts'o" <tytso@....edu>
To:     Daejun Park <daejun7.park@...sung.com>
Cc:     "adilger.kernel@...ger.ca" <adilger.kernel@...ger.ca>,
        "harshadshirwadkar@...il.com" <harshadshirwadkar@...il.com>,
        "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ext4: Remove expensive flush on fast commit

On Wed, Jan 06, 2021 at 10:32:42AM +0900, Daejun Park wrote:
> In the fast commit, it adds REQ_FUA and REQ_PREFLUSH on each fast commit
> block when barrier is enabled. However, in recovery phase, ext4 compares
> CRC value in the tail. So it is sufficient adds REQ_FUA and REQ_PREFLUSH
> on the block that has tail.
> 
> Signed-off-by: Daejun Park <daejun7.park@...sung.com>

Thanks, applied.

					- Ted