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From: Christoph Hellwig <hch@infradead.org>
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Subject: Re: make flock_lock_file_wait static
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> o	vfs_follow_link(): used to interpret symbolic links, which
> 	might point outside of SAN Filesystem.

This one is going away very soon, including the whole old-style
->follow_link support - for technical reasons.

Please convert your driver to put the contents of the symlink into
... and implement ->put_link like all intree filesystems already did.

Without that we can't bump the limit on recursive symlinks, a feature
that IBM has been pushing for very hard, btw..