[PATCH] nfsd4: don't release nfs4_file with associated delegations

Only release a struct nfs4_file if there are no associated delegations.
Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/nfsd/nfs4state.c

@@ -1791,7 +1791,7 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
 	            stp->st_stateid.si_fileid, stp->st_stateid.si_generation);
 out:
 	/* take the opportunity to clean up unused state */
-	if (fp && list_empty(&fp->fi_perfile))
+	if (fp && list_empty(&fp->fi_perfile) && list_empty(&fp->fi_del_perfile))
 		release_file(fp);
 
 	/* CLAIM_PREVIOUS has different error returns */