linux-ext4 - Re: [PATCH] fscrypto: lock inode while setting encryption policy

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Message-ID: <ea8b7140-f04e-380d-b5ae-263f029c0624@nod.at>
Date:   Thu, 29 Sep 2016 19:20:20 +0200
From:   Richard Weinberger <richard@....at>
To:     Eric Biggers <ebiggers@...gle.com>, linux-fsdevel@...r.kernel.org
Cc:     linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        tytso@....edu, jaegeuk@...nel.org
Subject: Re: [PATCH] fscrypto: lock inode while setting encryption policy

On 28.09.2016 20:34, Eric Biggers wrote:
> i_rwsem needs to be acquired while setting an encryption policy so that
> concurrent calls to FS_IOC_SET_ENCRYPTION_POLICY are correctly
> serialized (especially the ->get_context() + ->set_context() pair), and
> so that new files cannot be created in the directory during or after the
> ->empty_dir() check.
> 
> Signed-off-by: Eric Biggers <ebiggers@...gle.com>

Reviewed-by: Richard Weinberger <richard@....at>

Thanks,
//richard
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