Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx12.netapp.com ([216.240.18.77]:34982 "EHLO mx12.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751208AbaDQVKd (ORCPT ); Thu, 17 Apr 2014 17:10:33 -0400 From: Anna Schumaker To: , Subject: [PATCH 11/17] NFS: Create a common rpcsetup function for reads and writes Date: Thu, 17 Apr 2014 17:09:35 -0400 Message-ID: <1397768981-12856-12-git-send-email-Anna.Schumaker@Netapp.com> In-Reply-To: <1397768981-12856-1-git-send-email-Anna.Schumaker@Netapp.com> References: <1397768981-12856-1-git-send-email-Anna.Schumaker@Netapp.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-nfs-owner@vger.kernel.org List-ID: From: Anna Schumaker Write adds a little bit of code dealing with flush flags, but since "how" will always be 0 when reading we can share the code. Signed-off-by: Anna Schumaker --- fs/nfs/internal.h | 3 +++ fs/nfs/pageio.c | 36 ++++++++++++++++++++++++++++++++++++ fs/nfs/read.c | 26 ++------------------------ fs/nfs/write.c | 46 ++++------------------------------------------ 4 files changed, 45 insertions(+), 66 deletions(-) diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 798eb47..7bc36ee 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -401,6 +401,8 @@ extern struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *); extern void nfs_rw_header_free(struct nfs_pgio_header *); extern struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int); extern void nfs_pgio_data_release(struct nfs_pgio_data *); +extern void nfs_pgio_rpcsetup(struct nfs_pgio_data *, unsigned int, + unsigned int, int, struct nfs_commit_info *); /* read.c */ extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, @@ -449,6 +451,7 @@ extern void nfs_init_commit(struct nfs_commit_data *data, struct nfs_commit_info *cinfo); int nfs_scan_commit_list(struct list_head *src, struct list_head *dst, struct nfs_commit_info *cinfo, int max); +unsigned long nfs_reqs_to_commit(struct nfs_commit_info *); int nfs_scan_commit(struct inode *inode, struct list_head *dst, struct nfs_commit_info *cinfo); void nfs_mark_request_commit(struct nfs_page *req, diff --git a/fs/nfs/pageio.c b/fs/nfs/pageio.c index f64fd70..fddb3e3 100644 --- a/fs/nfs/pageio.c +++ b/fs/nfs/pageio.c @@ -87,6 +87,42 @@ void nfs_pgio_data_release(struct nfs_pgio_data *data) } EXPORT_SYMBOL_GPL(nfs_pgio_data_release); +void nfs_pgio_rpcsetup(struct nfs_pgio_data *data, + unsigned int count, unsigned int offset, + int how, struct nfs_commit_info *cinfo) +{ + struct nfs_page *req = data->header->req; + + /* Set up the RPC argument and reply structs + * NB: take care not to mess about with data->commit et al. */ + + data->args.fh = NFS_FH(data->header->inode); + data->args.offset = req_offset(req) + offset; + /* pnfs_set_layoutcommit needs this */ + data->mds_offset = data->args.offset; + data->args.pgbase = req->wb_pgbase + offset; + data->args.pages = data->pages.pagevec; + data->args.count = count; + data->args.context = get_nfs_open_context(req->wb_context); + data->args.lock_context = req->wb_lock_context; + data->args.stable = NFS_UNSTABLE; + switch (how & (FLUSH_STABLE | FLUSH_COND_STABLE)) { + case 0: + break; + case FLUSH_COND_STABLE: + if (nfs_reqs_to_commit(cinfo)) + break; + default: + data->args.stable = NFS_FILE_SYNC; + } + + data->res.fattr = &data->fattr; + data->res.count = count; + data->res.eof = 0; + data->res.verf = &data->verf; + nfs_fattr_init(&data->fattr); +} + static void nfs_pgio_prepare(struct rpc_task *task, void *calldata) { struct nfs_pgio_data *data = calldata; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 98373ba..2c33fc3 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -192,28 +192,6 @@ int nfs_initiate_read(struct rpc_clnt *clnt, } EXPORT_SYMBOL_GPL(nfs_initiate_read); -/* - * Set up the NFS read request struct - */ -static void nfs_read_rpcsetup(struct nfs_pgio_data *data, - unsigned int count, unsigned int offset) -{ - struct nfs_page *req = data->header->req; - - data->args.fh = NFS_FH(data->header->inode); - data->args.offset = req_offset(req) + offset; - data->args.pgbase = req->wb_pgbase + offset; - data->args.pages = data->pages.pagevec; - data->args.count = count; - data->args.context = get_nfs_open_context(req->wb_context); - data->args.lock_context = req->wb_lock_context; - - data->res.fattr = &data->fattr; - data->res.count = count; - data->res.eof = 0; - nfs_fattr_init(&data->fattr); -} - static int nfs_do_read(struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops) { @@ -305,7 +283,7 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, return -ENOMEM; } data->pages.pagevec[0] = page; - nfs_read_rpcsetup(data, len, offset); + nfs_pgio_rpcsetup(data, len, offset, 0, NULL); list_add(&data->list, &hdr->rpc_list); nbytes -= len; offset += len; @@ -340,7 +318,7 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, *pages++ = req->wb_page; } - nfs_read_rpcsetup(data, desc->pg_count, 0); + nfs_pgio_rpcsetup(data, desc->pg_count, 0, 0, NULL); list_add(&data->list, &hdr->rpc_list); desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index e492537..15f2ffc 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -603,7 +603,7 @@ out: } #if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) -static unsigned long +unsigned long nfs_reqs_to_commit(struct nfs_commit_info *cinfo) { return cinfo->mds->ncommit; @@ -660,7 +660,7 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst, } #else -static unsigned long nfs_reqs_to_commit(struct nfs_commit_info *cinfo) +unsigned long nfs_reqs_to_commit(struct nfs_commit_info *cinfo) { return 0; } @@ -987,44 +987,6 @@ out: } EXPORT_SYMBOL_GPL(nfs_initiate_write); -/* - * Set up the argument/result storage required for the RPC call. - */ -static void nfs_write_rpcsetup(struct nfs_pgio_data *data, - unsigned int count, unsigned int offset, - int how, struct nfs_commit_info *cinfo) -{ - struct nfs_page *req = data->header->req; - - /* Set up the RPC argument and reply structs - * NB: take care not to mess about with data->commit et al. */ - - data->args.fh = NFS_FH(data->header->inode); - data->args.offset = req_offset(req) + offset; - /* pnfs_set_layoutcommit needs this */ - data->mds_offset = data->args.offset; - data->args.pgbase = req->wb_pgbase + offset; - data->args.pages = data->pages.pagevec; - data->args.count = count; - data->args.context = get_nfs_open_context(req->wb_context); - data->args.lock_context = req->wb_lock_context; - data->args.stable = NFS_UNSTABLE; - switch (how & (FLUSH_STABLE | FLUSH_COND_STABLE)) { - case 0: - break; - case FLUSH_COND_STABLE: - if (nfs_reqs_to_commit(cinfo)) - break; - default: - data->args.stable = NFS_FILE_SYNC; - } - - data->res.fattr = &data->fattr; - data->res.count = count; - data->res.verf = &data->verf; - nfs_fattr_init(&data->fattr); -} - static int nfs_do_write(struct nfs_pgio_data *data, const struct rpc_call_ops *call_ops, int how) @@ -1129,7 +1091,7 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, return -ENOMEM; } data->pages.pagevec[0] = page; - nfs_write_rpcsetup(data, len, offset, desc->pg_ioflags, &cinfo); + nfs_pgio_rpcsetup(data, len, offset, desc->pg_ioflags, &cinfo); list_add(&data->list, &hdr->rpc_list); requests++; nbytes -= len; @@ -1179,7 +1141,7 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, desc->pg_ioflags &= ~FLUSH_COND_STABLE; /* Set up the argument struct */ - nfs_write_rpcsetup(data, desc->pg_count, 0, desc->pg_ioflags, &cinfo); + nfs_pgio_rpcsetup(data, desc->pg_count, 0, desc->pg_ioflags, &cinfo); list_add(&data->list, &hdr->rpc_list); desc->pg_rpc_callops = &nfs_pgio_common_ops; return 0; -- 1.9.2