linux-ext4 - Re: [PATCH 1/4] fs: split update_time() into update_time() and write

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Message-ID: <20141125155141.GF26471@twin.jikos.cz>
Date:	Tue, 25 Nov 2014 16:51:41 +0100
From:	David Sterba <dsterba@...e.cz>
To:	dsterba@...e.cz, Christoph Hellwig <hch@...radead.org>,
	Theodore Ts'o <tytso@....edu>, linux-fsdevel@...r.kernel.org,
	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	xfs@....sgi.com, linux-btrfs@...r.kernel.org
Subject: Re: [PATCH 1/4] fs: split update_time() into update_time() and
 write_time()

On Mon, Nov 24, 2014 at 06:34:30PM +0100, David Sterba wrote:
> The btrfs_root_readonly checks in setxattr and removexattr are
> unnecessary because they're done through xattr_permisssion. I'll send a
> patch to remove them.

Does not work because the security.* and system.* namespaces do not call
the permission() hook, so no patch. However, if the proposed
inode_is_readonly callback is merged, we can replace the btrfs-specific
checks with is_readonly check in xattr_permission().
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