Commit 2e6c6e4c authored by Chuck Lever's avatar Chuck Lever
Browse files

NFSD: Hook up the filecache stat file 



There has always been the capability of exporting filecache metrics
via /proc, but it was never hooked up. Let's surface these metrics
to enable better observability of the filecache.

Reviewed-by: default avatarJeff Layton <jlayton@kernel.org>
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
parent 8b330f78

fs/nfsd/nfsctl.c

+10 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include "state.h"

#include "netns.h"

#include "pnfs.h"

#include "filecache.h"



/*

 *	We have a single directory with several nodes in it.
@@ -45,6 +46,7 @@ enum { 
	NFSD_Ports,

	NFSD_MaxBlkSize,

	NFSD_MaxConnections,

	NFSD_Filecache,

	NFSD_SupportedEnctypes,

	/*

	 * The below MUST come last.  Otherwise we leave a hole in nfsd_files[]
@@ -229,6 +231,13 @@ static const struct file_operations reply_cache_stats_operations = { 
	.release	= single_release,

};



static const struct file_operations filecache_ops = {

	.open		= nfsd_file_cache_stats_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



/*----------------------------------------------------------------------------*/

/*

 * payload - write methods
@@ -1370,6 +1379,7 @@ static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc) 
		[NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},

		[NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},

		[NFSD_MaxConnections] = {"max_connections", &transaction_ops, S_IWUSR|S_IRUGO},

		[NFSD_Filecache] = {"filecache", &filecache_ops, S_IRUGO},

#if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)

		[NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO},

#endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */