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    Subject[PATCH 28/43] NFS: Add FS-Cache option bit and debug bit [ver #46]
    Date
    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>
    Acked-by: Steve Dickson <steved@redhat.com>
    Acked-by: Trond Myklebust <Trond.Myklebust@netapp.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 bde2557..fd3e7f9 100644
    --- a/include/linux/nfs_fs.h
    +++ b/include/linux/nfs_fs.h
    @@ -583,6 +583,7 @@ 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 29b1e40..a749f85 100644
    --- a/include/linux/nfs_fs_sb.h
    +++ b/include/linux/nfs_fs_sb.h
    @@ -96,6 +96,8 @@ 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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