From: Eric Biggers <ebiggers@kernel.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: Satya Tangirala <satyat@google.com>,
linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-ext4@vger.kernel.org,
Barani Muthukumaran <bmuthuku@qti.qualcomm.com>,
Kuohong Wang <kuohong.wang@mediatek.com>,
Kim Boojin <boojin.kim@samsung.com>
Subject: Re: [PATCH v7 1/9] block: Keyslot Manager for Inline Encryption
Date: Thu, 27 Feb 2020 10:14:11 -0800 [thread overview]
Message-ID: <20200227181411.GB877@sol.localdomain> (raw)
In-Reply-To: <20200221173118.GA30670@infradead.org>
On Fri, Feb 21, 2020 at 09:31:18AM -0800, Christoph Hellwig wrote:
> On Fri, Feb 21, 2020 at 09:04:34AM -0800, Christoph Hellwig wrote:
> > Given that blk_ksm_get_slot_for_key returns a signed keyslot that
> > can return errors, and the only callers stores it in a signed variable
> > I think this function should take a signed slot as well, and the check
> > for a non-negative slot should be moved here from the only caller.
>
> Actually looking over the code again I think it might be better to
> return only the error code (and that might actually be a blk_status_t),
> and then use an argument to return a pointer to the actual struct
> keyslot. That gives us much easier to understand code and better
> type safety.
That doesn't make sense because the caller only cares about the keyslot number,
not the 'struct keyslot'. The 'struct keyslot' is internal to
keyslot-manager.c, as it only contains keyslot management information.
Your earlier suggestion of making blk_ksm_put_slot() be a no-op on a negative
keyslot number sounds fine though.
- Eric
next prev parent reply other threads:[~2020-02-27 18:14 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-21 11:50 [PATCH v7 0/9] Inline Encryption Support Satya Tangirala
2020-02-21 11:50 ` [PATCH v7 1/9] block: Keyslot Manager for Inline Encryption Satya Tangirala
2020-02-21 17:04 ` Christoph Hellwig
2020-02-21 17:31 ` Christoph Hellwig
2020-02-27 18:14 ` Eric Biggers [this message]
2020-02-27 21:25 ` Satya Tangirala
2020-03-05 16:11 ` Christoph Hellwig
2020-02-27 18:48 ` Eric Biggers
2020-02-21 11:50 ` [PATCH v7 2/9] block: Inline encryption support for blk-mq Satya Tangirala
2020-02-21 17:22 ` Christoph Hellwig
2020-02-22 0:52 ` Satya Tangirala
2020-02-24 23:34 ` Christoph Hellwig
2020-02-27 18:25 ` Eric Biggers
2020-02-21 11:50 ` [PATCH v7 3/9] block: blk-crypto-fallback for Inline Encryption Satya Tangirala
2020-02-21 16:51 ` Randy Dunlap
2020-02-21 17:25 ` Christoph Hellwig
2020-02-21 17:35 ` Christoph Hellwig
2020-02-21 18:34 ` Eric Biggers
2020-02-24 23:36 ` Christoph Hellwig
2020-02-27 19:25 ` Eric Biggers
2020-02-21 11:50 ` [PATCH v7 4/9] scsi: ufs: UFS driver v2.1 spec crypto additions Satya Tangirala
2020-02-21 11:50 ` [PATCH v7 5/9] scsi: ufs: UFS crypto API Satya Tangirala
2020-02-22 4:59 ` Eric Biggers
2020-02-21 11:50 ` [PATCH v7 6/9] scsi: ufs: Add inline encryption support to UFS Satya Tangirala
2020-02-21 17:22 ` Christoph Hellwig
2020-02-21 18:11 ` Eric Biggers
2020-02-23 13:47 ` Stanley Chu
2020-02-24 23:37 ` Christoph Hellwig
2020-02-25 7:21 ` Stanley Chu
2020-02-26 1:12 ` Eric Biggers
2020-02-26 6:43 ` Stanley Chu
2020-03-02 9:17 ` Stanley Chu
2020-02-21 11:50 ` [PATCH v7 7/9] fscrypt: add inline encryption support Satya Tangirala
2020-02-21 18:40 ` Eric Biggers
2020-02-22 5:39 ` Eric Biggers
2020-02-26 0:30 ` Eric Biggers
2020-02-21 11:50 ` [PATCH v7 8/9] f2fs: " Satya Tangirala
2020-02-21 11:50 ` [PATCH v7 9/9] ext4: " Satya Tangirala
2020-02-22 5:21 ` Eric Biggers
2020-02-21 17:16 ` [PATCH v7 0/9] Inline Encryption Support Eric Biggers
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