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nfs: remove ->write_pageio_init from rpc ops

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The write_pageio_init method is just a very convoluted way to grab the
right nfs_pageio_ops vector.  The vector to chose is not a choice of
protocol version, but just a pNFS vs MDS I/O choice that can simply be
done inside nfs_pageio_init_write based on the presence of a layout
driver, and a new force_mds flag to the special case of falling back
to MDS I/O on a pNFS-capable volume.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Christoph Hellwig 2014-04-16 15:07:21 +02:00 • committed by Trond Myklebust
parent 1b33809ea8
commit a20c93e316
9 changed files with 17 additions and 39 deletions
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2
include/linux/nfs_xdr.h
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@ -1471,8 +1471,6 @@ struct nfs_rpc_ops {
int (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
int (*read_done) (struct rpc_task *, struct nfs_read_data *);
void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
void (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int,
const struct nfs_pgio_completion_ops *);
int (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
int (*write_done) (struct rpc_task *, struct nfs_write_data *);
void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);