knfsd: allow cache_register to return error on failure
Newer server features such as nfsv4 and gss depend on proc to work, so a
failure to initialize the proc files they need should be treated as
fatal.
Thanks to Andrew Morton for style fix and compile fix in case where
CONFIG_NFSD_V4 is undefined.
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index ef22179..996bd88 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -464,11 +464,18 @@
* Exported API
*/
-void
+int
nfsd_idmap_init(void)
{
- cache_register(&idtoname_cache);
- cache_register(&nametoid_cache);
+ int rv;
+
+ rv = cache_register(&idtoname_cache);
+ if (rv)
+ return rv;
+ rv = cache_register(&nametoid_cache);
+ if (rv)
+ cache_unregister(&idtoname_cache);
+ return rv;
}
void