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J. Bruce Fields authored
We hold the cl_lock here, and that's enough to keep stateid's from going away, but it's not enough to prevent the files they point to from going away. Take fi_lock and a reference and check for NULL, as we do in other code. Reported-by: NeilBrown <neilb@suse.de> Fixes: 78599c42 ("nfsd4: add file to display list of client's opens") Reviewed-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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