NFS: merge _full and _partial write rpc_ops
authorFred Isaman <iisaman@netapp.com>
Fri, 20 Apr 2012 18:47:47 +0000 (14:47 -0400)
committerTrond Myklebust <Trond.Myklebust@netapp.com>
Fri, 27 Apr 2012 18:10:37 +0000 (14:10 -0400)
commit6c75dc0d498caa402fb17b1bf769835a9db875c8
treeb367bb2428c011f20b8fd47a6dd0b8603ee136ba
parent4db6e0b74c0f6dfc2f9c0690e8df512e3b635983
NFS: merge _full and _partial write rpc_ops

Decouple nfs_pgio_header and nfs_write_data, and have (possibly
multiple) nfs_write_datas each take a refcount on nfs_pgio_header.

For the moment keeps nfs_write_header as a way to preallocate a single
nfs_write_data with the nfs_pgio_header.  The code doesn't need this,
and would be prettier without, but given the amount of churn I am
already introducing I didn't want to play with tuning new mempools.

This also fixes bug in pnfs_ld_handle_write_error.  In the case of
desc->pg_bsize < PAGE_CACHE_SIZE, the pages list was empty, causing
replay attempt to do nothing.

Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
fs/nfs/direct.c
fs/nfs/internal.h
fs/nfs/nfs4filelayout.c
fs/nfs/nfs4proc.c
fs/nfs/pnfs.c
fs/nfs/write.c
include/linux/nfs_xdr.h