From: Chuck Lever Date: Thu, 17 Oct 2013 18:12:56 +0000 (-0400) Subject: NFS: Add a super_block backpointer to the nfs_server struct X-Git-Tag: upstream/snapshot3+hdmi~3828^2~53 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ce6cda1845cf2332d2c411a5c72cd166256b21da;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git NFS: Add a super_block backpointer to the nfs_server struct NFS_SB() returns the pointer to an nfs_server struct, given a pointer to a super_block. But we have no way to go back the other way. Add a super_block backpointer field so that, given an nfs_server struct, it is easy to get to the filesystem's root dentry. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 3f5a7a8..e26647b 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2534,6 +2534,7 @@ struct dentry *nfs_fs_mount_common(struct nfs_server *server, mntroot = ERR_PTR(error); goto error_splat_bdi; } + server->super = s; } if (!s->s_root) { diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index f9c0a6c..46b0cb4 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -148,6 +148,7 @@ struct nfs_server { __u64 maxfilesize; /* maximum file size */ struct timespec time_delta; /* smallest time granularity */ unsigned long mount_time; /* when this fs was mounted */ + struct super_block *super; /* VFS super block */ dev_t s_dev; /* superblock dev numbers */ #ifdef CONFIG_NFS_FSCACHE