linux-ext4 - Re: [PATCH] ext4: Add support for SFITRIM, an ioctl for secure FITRIM.

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Message-ID: <CAKP4w2Tux8nuWW-uOfY+t+B84=PMmt3sFZ8cA6UMg42dSTo0-A@mail.gmail.com>
Date:	Thu, 12 Jun 2014 20:02:23 -0700
From:	JP Abgrall <jpa@...gle.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	linux-ext4@...r.kernel.org, Geremy Condra <gcondra@...gle.com>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH] ext4: Add support for SFITRIM, an ioctl for secure FITRIM.

On Thu, Jun 12, 2014 at 7:36 PM, Eric Sandeen <sandeen@...hat.com> wrote:

> IOWS: your commit log says what, but not why.

Will upload a version with some more "why".


> You're adding a new high-level IOCTL, so let's get a bit more
> visibility than just linux-ext4; linux-fsdevel cc'd.

Wasn't too sure about that one, because I didn't feel like committing
to other FSes for now even if they do have FITRIM.
Will remember to include them.

>> +             if (secure_trim && !blk_queue_secdiscard(q))
>> +                     return -EOPNOTSUPP;
>> +
>> +             if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
>> +                            EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
>> +                     ext4_msg(sb, KERN_ERR,
>> +                              "FITRIM not supported with bigalloc");
>> +                     return -EOPNOTSUPP;
>> +             }
>> +
>
> This last conditional is unrelated to the patch; if BIGALLOC has another
> incomplete part of its implementation, please send it as a standalone patch,
> not buried in this one.

Yup. My bad.

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