SUNRPC/NFS: Add Kbuild dependencies for NFS_DEBUG/RPC_DEBUG

This allows us to turn on/off the dprintk() debugging interfaces for
those distributions that don't ship the 'rpcdebug' utility.
It also allows us to add Kbuild dependencies. Specifically, we already
know that dprintk() in general relies on CONFIG_SYSCTL. Now it turns out
that the NFS dprintks depend on CONFIG_CRC32 after we added support
for the filehandle hash.

Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 8 insertions, 9 deletions

diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 0a63ab2b5a76..8f27c2e36ddf 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -38,6 +38,13 @@
 
 #ifdef __KERNEL__
 
+/*
+ * Enable dprintk() debugging support for nfs client.
+ */
+#ifdef CONFIG_NFS_DEBUG
+# define NFS_DEBUG
+#endif
+
 #include <linux/in.h>
 #include <linux/mm.h>
 #include <linux/pagemap.h>
@@ -391,7 +398,7 @@ static inline void nfs_free_fhandle(const struct nfs_fh *fh)
         kfree(fh);
 }
 
-#ifdef RPC_DEBUG
+#ifdef NFS_DEBUG
 extern u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh);
 static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh)
 {
@@ -650,14 +657,6 @@ nfs_fileid_to_ino_t(u64 fileid)
 
 #ifdef __KERNEL__
 
-/*
- * Enable debugging support for nfs client.
- * Requires RPC_DEBUG.
- */
-#ifdef RPC_DEBUG
-# define NFS_DEBUG
-#endif
-
 # undef ifdebug
 # ifdef NFS_DEBUG
 #  define ifdebug(fac)          if (unlikely(nfs_debug & NFSDBG_##fac))