From: Chuck Lever Date: Mon, 20 Mar 2006 18:44:15 +0000 (-0500) Subject: NFS: report how long an NFS file system has been mounted X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=67ec9f46b889bfb1ab0a4e307d53929d5f0692bf;p=linux-beck.git NFS: report how long an NFS file system has been mounted Add a field in nfs_server to record a timestamp when a mount succeeds. Report the number of seconds the file system has been mounted via nfs_show_stats(). Test plan: Mount an NFS file system, watch the mountstats reports and compare with clock time. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 8ee74111e519..1b2d782374b5 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -299,6 +299,9 @@ nfs_sb_init(struct super_block *sb, rpc_authflavor_t authflavor) goto out_no_root; } + /* mount time stamp, in seconds */ + server->mount_time = jiffies; + /* Get some general file system info */ if (server->namelen == 0 && server->rpc_ops->pathconf(server, &server->fh, &pathinfo) >= 0) @@ -674,6 +677,8 @@ static int nfs_show_stats(struct seq_file *m, struct vfsmount *mnt) seq_puts(m, mnt->mnt_sb->s_flags & MS_NODIRATIME ? ",nodiratime" : ""); nfs_show_mount_options(m, nfss, 1); + seq_printf(m, "\n\tage:\t%lu", (jiffies - nfss->mount_time) / HZ); + seq_printf(m, "\n\tcaps:\t"); seq_printf(m, "caps=0x%x", nfss->caps); seq_printf(m, ",wtmult=%d", nfss->wtmult); diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index d65e69a06b72..65dec21af774 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -35,6 +35,7 @@ struct nfs_server { char * hostname; /* remote hostname */ struct nfs_fh fh; struct sockaddr_in addr; + unsigned long mount_time; /* when this fs was mounted */ #ifdef CONFIG_NFS_V4 /* Our own IP address, as a null-terminated string. * This is used to generate the clientid, and the callback address.