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[PATCH 22/37] NFS: Add FS-Cache option bit and debug bit [ver #34]

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From: David Howells
Subject: [PATCH 22/37] NFS: Add FS-Cache option bit and debug bit [ver #34]
Date: Thursday, February 28, 2008 - 5:45 pm

Add FS-Cache option bit to nfs_server struct.  This is set to indicate local
on-disk caching is enabled for a particular superblock.

Also add debug bit for local caching operations.

Signed-off-by: David Howells <dhowells@redhat.com>
---

 include/linux/nfs_fs.h    |    1 +
 include/linux/nfs_fs_sb.h |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)


diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index a69ba80..14894c9 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -578,6 +578,7 @@ extern void * nfs_root_data(void);
 #define NFSDBG_CALLBACK		0x0100
 #define NFSDBG_CLIENT		0x0200
 #define NFSDBG_MOUNT		0x0400
+#define NFSDBG_FSCACHE		0x0800
 #define NFSDBG_ALL		0xFFFF
 
 #ifdef __KERNEL__
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 3423c67..e7c4cdd 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -99,6 +99,8 @@ struct nfs_server {
 	unsigned int		acdirmin;
 	unsigned int		acdirmax;
 	unsigned int		namelen;
+	unsigned int		options;	/* extra options enabled by mount */
+#define NFS_OPTION_FSCACHE	0x00000001	/* - local caching enabled */
 
 	struct nfs_fsid		fsid;
 	__u64			maxfilesize;	/* maximum file size */

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Messages in current thread:
[PATCH 00/37] Permit filesystem local caching [ver #34], David Howells, (Thu Feb 28, 5:43 pm)
[PATCH 01/37] KEYS: Increase the payload size when instant ..., David Howells, (Thu Feb 28, 5:43 pm)
[PATCH 02/37] KEYS: Check starting keyring as part of sear ..., David Howells, (Thu Feb 28, 5:43 pm)
[PATCH 03/37] KEYS: Allow the callout data to be passed as ..., David Howells, (Thu Feb 28, 5:43 pm)
[PATCH 04/37] KEYS: Add keyctl function to get a security ..., David Howells, (Thu Feb 28, 5:43 pm)
[PATCH 05/37] Security: Change current-&gt;fs[ug]id to curren ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 07/37] Security: De-embed task security record from ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 08/37] Security: Add a kernel_service object class ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 09/37] Security: Allow kernel services to override ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 10/37] Security: Make NFSD work with detached secur ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 11/37] FS-Cache: Release page-&gt;private after failed ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 12/37] FS-Cache: Recruit a couple of page flags for ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 13/37] FS-Cache: Provide an add_wait_queue_tail() f ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 15/37] CacheFiles: Add missing copy_page export for ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 16/37] CacheFiles: Be consistent about the use of m ..., David Howells, (Thu Feb 28, 5:44 pm)
[PATCH 17/37] CacheFiles: Add a hook to write a single pag ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 18/37] CacheFiles: Permit the page lock state to be ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 19/37] CacheFiles: Export things for CacheFiles [ve ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 21/37] NFS: Add comment banners to some NFS functio ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 22/37] NFS: Add FS-Cache option bit and debug bit [ ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 23/37] NFS: Permit local filesystem caching to be e ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 24/37] NFS: Register NFS for caching and retrieve t ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 25/37] NFS: Define and create server-level objects ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 26/37] NFS: Define and create superblock-level obje ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 27/37] NFS: Define and create inode-level cache obj ..., David Howells, (Thu Feb 28, 5:45 pm)
[PATCH 28/37] NFS: Use local disk inode cache [ver #34], David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 29/37] NFS: Invalidate FsCache page flags when cach ..., David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 30/37] NFS: Add some new I/O event counters for FS- ..., David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 31/37] NFS: FS-Cache page management [ver #34], David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 32/37] NFS: Add read context retention for FS-Cache ..., David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 33/37] NFS: nfs_readpage_async() needs to be access ..., David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 34/37] NFS: Read pages from FS-Cache into an NFS in ..., David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 35/37] NFS: Store pages from an NFS inode into a lo ..., David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 36/37] NFS: Display local caching state [ver #34], David Howells, (Thu Feb 28, 5:46 pm)
[PATCH 37/37] NFS: Add mount options to enable local cachi ..., David Howells, (Thu Feb 28, 5:46 pm)