From cfe7f4120f8b1b9465c333d1e42efd4669b1799f Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Tue, 1 Mar 2011 01:34:18 +0000 Subject: NFSv4.1: filelayout i/o helpers Prepare for filelayout_read_pagelist with helper functions that find the correct data server, filehandle, and offset. Signed-off-by: Andy Adamson Signed-off-by: Dean Hildebrand Signed-off-by: Fred Isaman Signed-off-by: Marc Eshel Signed-off-by: Mike Sager Signed-off-by: Oleg Drokin Signed-off-by: Tao Guo Signed-off-by: Tigran Mkrtchyan Signed-off-by: Tigran Mkrtchyan Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy Signed-off-by: Trond Myklebust --- fs/nfs/nfs4filelayout.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'fs/nfs/nfs4filelayout.h') diff --git a/fs/nfs/nfs4filelayout.h b/fs/nfs/nfs4filelayout.h index bbf60dd2ab9d..9fef76e04936 100644 --- a/fs/nfs/nfs4filelayout.h +++ b/fs/nfs/nfs4filelayout.h @@ -83,9 +83,16 @@ FILELAYOUT_LSEG(struct pnfs_layout_segment *lseg) generic_hdr); } +extern struct nfs_fh * +nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg, u32 j); + extern void nfs4_fl_free_deviceid_callback(struct pnfs_deviceid_node *); extern void print_ds(struct nfs4_pnfs_ds *ds); extern void print_deviceid(struct nfs4_deviceid *dev_id); +u32 nfs4_fl_calc_j_index(struct pnfs_layout_segment *lseg, loff_t offset); +u32 nfs4_fl_calc_ds_index(struct pnfs_layout_segment *lseg, u32 j); +struct nfs4_pnfs_ds *nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, + u32 ds_idx); extern struct nfs4_file_layout_dsaddr * nfs4_fl_find_get_deviceid(struct nfs_client *, struct nfs4_deviceid *dev_id); struct nfs4_file_layout_dsaddr * -- cgit v1.2.3