NFS: Remove all NFSIOS_FSCACHE counters due to conversion to netfs API

The old NFSIOS_FSCACHE counters are no longer accurate or useful with
the conversion to the new netfs API.  The new API does not have a page
based interface, and so the counters in nfs_stat_fscachecounters are
no longer obtainable.  The new netfs the API has extensive statistics
inside /proc/fs/fscache/stats so we no longer need NFS specific fscache
stats.

Note this also removes the 'fsc:' line from /proc/self/mountstats so
it will be a user-visible change.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Daire Byrne <daire@dneg.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

1 files changed, 0 insertions, 17 deletions

diff --git a/fs/nfs/iostat.h b/fs/nfs/iostat.h
index 2ddaab1ac653..5aa776b5a3e7 100644
--- a/fs/nfs/iostat.h
+++ b/fs/nfs/iostat.h
@@ -17,9 +17,6 @@
 
 struct nfs_iostats {
 	unsigned long long	bytes[__NFSIOS_BYTESMAX];
-#ifdef CONFIG_NFS_FSCACHE
-	unsigned long long	fscache[__NFSIOS_FSCACHEMAX];
-#endif
 	unsigned long		events[__NFSIOS_COUNTSMAX];
 } ____cacheline_aligned;
 
@@ -49,20 +46,6 @@ static inline void nfs_add_stats(const struct inode *inode,
 	nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
 }
 
-#ifdef CONFIG_NFS_FSCACHE
-static inline void nfs_add_fscache_stats(struct inode *inode,
-					 enum nfs_stat_fscachecounters stat,
-					 long addend)
-{
-	this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend);
-}
-static inline void nfs_inc_fscache_stats(struct inode *inode,
-					 enum nfs_stat_fscachecounters stat)
-{
-	this_cpu_inc(NFS_SERVER(inode)->io_stats->fscache[stat]);
-}
-#endif
-
 static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void)
 {
 	return alloc_percpu(struct nfs_iostats);