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NFS: Create an write_pageio_init() function

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pNFS needs to select a write function based on the layout driver
currently in use, so I let each NFS version decide how to best handle
initializing writes.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Bryan Schumaker
2012-06-20 15:53:48 -04:00
committed by Trond Myklebust
parent 1abb50886a
commit 57208fa7e5
8 changed files with 20 additions and 22 deletions
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18
fs/nfs/write.c
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@@ -336,8 +336,10 @@ static int nfs_writepage_locked(struct page *page, struct writeback_control *wbc
struct nfs_pageio_descriptor pgio;
int err;
nfs_pageio_init_write(&pgio, page->mapping->host, wb_priority(wbc),
&nfs_async_write_completion_ops);
NFS_PROTO(page->mapping->host)->write_pageio_init(&pgio,
page->mapping->host,
wb_priority(wbc),
&nfs_async_write_completion_ops);
err = nfs_do_writepage(page, wbc, &pgio);
nfs_pageio_complete(&pgio);
if (err < 0)
@@ -380,8 +382,7 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
nfs_pageio_init_write(&pgio, inode, wb_priority(wbc),
&nfs_async_write_completion_ops);
NFS_PROTO(inode)->write_pageio_init(&pgio, inode, wb_priority(wbc), &nfs_async_write_completion_ops);
err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio);
nfs_pageio_complete(&pgio);
@@ -1202,7 +1203,7 @@ static const struct nfs_pageio_ops nfs_pageio_write_ops = {
.pg_doio = nfs_generic_pg_writepages,
};
void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
struct inode *inode, int ioflags,
const struct nfs_pgio_completion_ops *compl_ops)
{
@@ -1217,13 +1218,6 @@ void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio)
}
EXPORT_SYMBOL_GPL(nfs_pageio_reset_write_mds);
void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
struct inode *inode, int ioflags,
const struct nfs_pgio_completion_ops *compl_ops)
{
if (!pnfs_pageio_init_write(pgio, inode, ioflags, compl_ops))
nfs_pageio_init_write_mds(pgio, inode, ioflags, compl_ops);
}
void nfs_write_prepare(struct rpc_task *task, void *calldata)
{