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pnfs: add set-clear layoutdriver interface

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To allow layout driver to issue getdevicelist at mount time, and clean up
at umount time.

[fixup non NFS_V4_1 set_pnfs_layoutdriver definition]
[pnfs: pass mntfh down the init_pnfs path]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@tonian.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Benny Halevy
2011-07-30 20:52:36 -04:00
committed by Trond Myklebust
parent 7f11d8d38d
commit 738fd0f360
3 changed files with 24 additions and 7 deletions
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8
fs/nfs/client.c
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@ -904,7 +904,9 @@ error:
/*
* Load up the server record from information gained in an fsinfo record
*/
static void nfs_server_set_fsinfo(struct nfs_server *server, struct nfs_fsinfo *fsinfo)
static void nfs_server_set_fsinfo(struct nfs_server *server,
struct nfs_fh *mntfh,
struct nfs_fsinfo *fsinfo)
{
unsigned long max_rpc_payload;
@ -934,7 +936,7 @@ static void nfs_server_set_fsinfo(struct nfs_server *server, struct nfs_fsinfo *
if (server->wsize > NFS_MAX_FILE_IO_SIZE)
server->wsize = NFS_MAX_FILE_IO_SIZE;
server->wpages = (server->wsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
set_pnfs_layoutdriver(server, fsinfo->layouttype);
set_pnfs_layoutdriver(server, mntfh, fsinfo->layouttype);
server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL);
@ -980,7 +982,7 @@ static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, str
if (error < 0)
goto out_error;
nfs_server_set_fsinfo(server, &fsinfo);
nfs_server_set_fsinfo(server, mntfh, &fsinfo);
/* Get some general file system info */
if (server->namelen == 0) {