linux-toradex.git/fs/nfs/nfs4filelayoutdev.c, branch v3.0.7

SUNRPC: introduce xdr_init_decode_pages

2011-05-29T17:52:32+00:00

Initialize xdr_stream and xdr_buf using an array of page pointers
and length of buffer.

Signed-off-by: Benny Halevy

NFSv4.1: purge deviceid cache on nfs_free_client

2011-05-29T17:50:42+00:00

Use the pnfs_layoutdriver_type both as a qualifier for the deviceid,
distinguishing deviceid from different layout types on the server,
and for freeing the layout-driver allocated structure containing the
nfs4_deviceid_node.

[BUG in _deviceid_purge_client]
[layout_driver MUST set free_deviceid_node if using dev-cache]
[let ver < 4.1 compile]
Signed-off-by: Boaz Harrosh 
[removed EXPORT_SYMBOL_GPL(nfs4_deviceid_purge_client)]
Signed-off-by: Benny Halevy

NFSv4.1: make deviceid cache global

2011-05-29T09:09:48+00:00

Move deviceid cache from the pnfs files layout driver to the
generic layer in preparation for the objects layout driver.

Signed-off-by: Benny Halevy

NFSv4.1: use struct nfs_client to qualify deviceid

2011-05-29T09:09:47+00:00

deviceids are unique per server, per layout type.
Therefore, in the global cache in the files layout driver
deviceids from different servers may clash so we need
to qualify them with a struct nfs_client that represents
the nfs server that returned the deviceid.

Introduced in 2.6.39 commit ea8eecdd
"NFSv4.1 move deviceid cache to filelayout driver"

Signed-off-by: Benny Halevy

NFSv4.1: Ensure that layoutget uses the correct gfp modes

2011-05-12T02:52:13+00:00

Currently, writebacks may end up recursing back into the filesystem due to
GFP_KERNEL direct reclaims in the pnfs subsystem.

Signed-off-by: Trond Myklebust

Cleanup XDR parsing for LAYOUTGET, GETDEVICEINFO

2011-03-24T21:01:41+00:00

changes LAYOUTGET and GETDEVICEINFO XDR parsing to:
 - not use vmap, which doesn't work on incoherent archs
 - use xdr_stream parsing for all xdr

Signed-off-by: Weston Andros Adamson 
Signed-off-by: Trond Myklebust

NFSv4.1: turn off pNFS on ds connection failure

2011-03-11T20:38:43+00:00

If a data server is unavailable, go through MDS.

Mark the deviceid containing the data server as a negative cache entry.
Do not try to connect to any data server on a deviceid marked as a negative
cache entry. Mark any layout that tries to use the marked deviceid as failed.

Inodes with a layout marked as fails will not use the layout for I/O, and will
not perform any more layoutgets.
Inodes without a layout will still do layoutget, but the layout will get
marked immediately.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

NFSv4.1 move deviceid cache to filelayout driver

2011-03-11T20:38:43+00:00

No need for generic cache with only one user.
Keep a simple hash of deviceids in the filelayout driver.

Signed-off-by: Christoph Hellwig 
Acked-by: Andy Adamson 
Signed-off-by: Trond Myklebust

NFSv4.1: filelayout i/o helpers

2011-03-11T20:38:42+00:00

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

NFSv4.1: data server connection

2011-03-11T20:38:42+00:00

Introduce a data server set_client and init session following the
nfs4_set_client and  nfs4_init_session convention.

Once a new nfs_client is on the nfs_client_list, the nfs_client cl_cons_state
serializes access to creating an nfs_client struct with matching properties.

Use the new nfs_get_client() that initializes new clients.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust