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| author |   Fred Isaman <iisaman@netapp.com> | 2011-03-01 01:34:18 +0000 |
|---|---|---|
| committer |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-03-11 15:38:42 -0500 |
| commit | cfe7f4120f8b1b9465c333d1e42efd4669b1799f (patch) | |
| tree | a55e5fc7dbafdf43588a480a0348da0ad8e1eb9e /fs/nfs/nfs4filelayout.h | |
| parent | NFSv4.1: data server connection (diff) | |
| download | linux-dev-cfe7f4120f8b1b9465c333d1e42efd4669b1799f.tar.xz linux-dev-cfe7f4120f8b1b9465c333d1e42efd4669b1799f.zip | |
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 <andros@citi.umich.edu>
Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Marc Eshel <eshel@almaden.ibm.com>
Signed-off-by: Mike Sager <sager@netapp.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn>
Signed-off-by: Tigran Mkrtchyan <tigran@anahit.desy.de>
Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4filelayout.h')
| -rw-r--r-- | fs/nfs/nfs4filelayout.h | 7 |
1 files changed, 7 insertions, 0 deletions
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 * |