pnfs: add prefix to struct pnfs_layout_segment fields

While we are renaming all the fields, change lo->state to lo->plh_flags.

Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index e12367d..6fcc073 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -31,10 +31,10 @@
 #define FS_NFS_PNFS_H
 
 struct pnfs_layout_segment {
-	struct list_head fi_list;
-	struct pnfs_layout_range range;
-	struct kref kref;
-	struct pnfs_layout_hdr *layout;
+	struct list_head pls_list;
+	struct pnfs_layout_range pls_range;
+	struct kref pls_refcount;
+	struct pnfs_layout_hdr *pls_layout;
 };
 
 #ifdef CONFIG_NFS_V4_1
@@ -65,7 +65,7 @@
 	struct list_head	segs;      /* layout segments list */
 	seqlock_t		seqlock;   /* Protects the stateid */
 	nfs4_stateid		stateid;
-	unsigned long		state;
+	unsigned long		plh_flags;
 	struct inode		*inode;
 };