linux-kernel - Re: [f2fs-dev] [PATCH v5 2/2] f2fs: add F2FS_IOC_SET_COMPRESS

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Message-ID: <69dfcb36-158c-e524-494c-6c5377a56945@huawei.com>
Date:   Fri, 30 Oct 2020 09:52:15 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Eric Biggers <ebiggers@...nel.org>
CC:     Daeho Jeong <daeho43@...il.com>, <linux-kernel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>,
        <kernel-team@...roid.com>, "Daeho Jeong" <daehojeong@...gle.com>
Subject: Re: [f2fs-dev] [PATCH v5 2/2] f2fs: add F2FS_IOC_SET_COMPRESS_OPTION
 ioctl

On 2020/10/29 23:54, Eric Biggers wrote:
> Note that my intent with recommending ENOPKG was for it to be returned in the
> !f2fs_cops[algorithm] case, similar to how opening an encrypted file when the
> encryption algorithm is recognized but not supported by the kernel returns
> ENOPKG.  For a truly unrecognized algorithm (algorithm >= COMPRESS_MAX), EINVAL
> would probably be more appropriate.  So if !f2fs_cops[algorithm] is now allowed,
> then ENOPKG should no longer be among the error codes this ioctl returns.

Agreed.

Thanks,

> 
> - Eric
> .
>