NFS: Create an write_pageio_init() function
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>
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1abb50886a
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57208fa7e5
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@ -320,7 +320,7 @@ extern struct nfs_write_header *nfs_writehdr_alloc(void);
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extern void nfs_writehdr_free(struct nfs_pgio_header *hdr);
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extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc,
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struct nfs_pgio_header *hdr);
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extern void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
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extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
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struct inode *inode, int ioflags,
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const struct nfs_pgio_completion_ops *compl_ops);
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extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio);
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@ -925,6 +925,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
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.read_rpc_prepare = nfs3_proc_read_rpc_prepare,
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.read_done = nfs3_read_done,
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.write_setup = nfs3_proc_write_setup,
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.write_pageio_init = nfs_pageio_init_write,
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.write_rpc_prepare = nfs3_proc_write_rpc_prepare,
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.write_done = nfs3_write_done,
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.commit_setup = nfs3_proc_commit_setup,
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@ -6796,6 +6796,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
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.read_rpc_prepare = nfs4_proc_read_rpc_prepare,
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.read_done = nfs4_read_done,
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.write_setup = nfs4_proc_write_setup,
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.write_pageio_init = pnfs_pageio_init_write,
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.write_rpc_prepare = nfs4_proc_write_rpc_prepare,
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.write_done = nfs4_write_done,
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.commit_setup = nfs4_proc_commit_setup,
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@ -1222,7 +1222,7 @@ pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode,
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nfs_pageio_init(pgio, inode, ld->pg_read_ops, compl_ops, server->rsize, 0);
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}
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bool
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void
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pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode,
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int ioflags,
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const struct nfs_pgio_completion_ops *compl_ops)
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@ -1231,10 +1231,9 @@ pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode,
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struct pnfs_layoutdriver_type *ld = server->pnfs_curr_ld;
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if (ld == NULL)
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return false;
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nfs_pageio_init(pgio, inode, ld->pg_write_ops, compl_ops,
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server->wsize, ioflags);
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return true;
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nfs_pageio_init_write(pgio, inode, ioflags, compl_ops);
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else
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nfs_pageio_init(pgio, inode, ld->pg_write_ops, compl_ops, server->wsize, ioflags);
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}
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bool
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@ -1271,7 +1270,7 @@ int pnfs_write_done_resend_to_mds(struct inode *inode,
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LIST_HEAD(failed);
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/* Resend all requests through the MDS */
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nfs_pageio_init_write_mds(&pgio, inode, FLUSH_STABLE, compl_ops);
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nfs_pageio_init_write(&pgio, inode, FLUSH_STABLE, compl_ops);
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while (!list_empty(head)) {
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struct nfs_page *req = nfs_list_entry(head->next);
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@ -180,7 +180,7 @@ void put_lseg(struct pnfs_layout_segment *lseg);
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void pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *,
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const struct nfs_pgio_completion_ops *);
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bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *,
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void pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *,
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int, const struct nfs_pgio_completion_ops *);
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void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32);
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@ -444,10 +444,10 @@ static inline void pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, str
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nfs_pageio_init_read(pgio, inode, compl_ops);
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}
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static inline bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags,
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static inline void pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags,
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const struct nfs_pgio_completion_ops *compl_ops)
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{
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return false;
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nfs_pageio_init_write(pgio, inode, ioflags, compl_ops);
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}
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static inline int
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@ -782,6 +782,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
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.read_rpc_prepare = nfs_proc_read_rpc_prepare,
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.read_done = nfs_read_done,
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.write_setup = nfs_proc_write_setup,
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.write_pageio_init = nfs_pageio_init_write,
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.write_rpc_prepare = nfs_proc_write_rpc_prepare,
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.write_done = nfs_write_done,
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.commit_setup = nfs_proc_commit_setup,
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@ -336,8 +336,10 @@ static int nfs_writepage_locked(struct page *page, struct writeback_control *wbc
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struct nfs_pageio_descriptor pgio;
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int err;
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nfs_pageio_init_write(&pgio, page->mapping->host, wb_priority(wbc),
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&nfs_async_write_completion_ops);
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NFS_PROTO(page->mapping->host)->write_pageio_init(&pgio,
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page->mapping->host,
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wb_priority(wbc),
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&nfs_async_write_completion_ops);
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err = nfs_do_writepage(page, wbc, &pgio);
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nfs_pageio_complete(&pgio);
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if (err < 0)
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@ -380,8 +382,7 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
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nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
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nfs_pageio_init_write(&pgio, inode, wb_priority(wbc),
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&nfs_async_write_completion_ops);
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NFS_PROTO(inode)->write_pageio_init(&pgio, inode, wb_priority(wbc), &nfs_async_write_completion_ops);
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err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio);
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nfs_pageio_complete(&pgio);
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@ -1202,7 +1203,7 @@ static const struct nfs_pageio_ops nfs_pageio_write_ops = {
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.pg_doio = nfs_generic_pg_writepages,
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};
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void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
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void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
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struct inode *inode, int ioflags,
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const struct nfs_pgio_completion_ops *compl_ops)
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{
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@ -1217,13 +1218,6 @@ void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio)
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}
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EXPORT_SYMBOL_GPL(nfs_pageio_reset_write_mds);
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void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
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struct inode *inode, int ioflags,
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const struct nfs_pgio_completion_ops *compl_ops)
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{
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if (!pnfs_pageio_init_write(pgio, inode, ioflags, compl_ops))
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nfs_pageio_init_write_mds(pgio, inode, ioflags, compl_ops);
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}
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void nfs_write_prepare(struct rpc_task *task, void *calldata)
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{
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@ -1413,6 +1413,8 @@ struct nfs_rpc_ops {
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void (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
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int (*read_done) (struct rpc_task *, struct nfs_read_data *);
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void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
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void (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int,
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const struct nfs_pgio_completion_ops *);
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void (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
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int (*write_done) (struct rpc_task *, struct nfs_write_data *);
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void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
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