From: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
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 <Anna.Schumaker@xxxxxxxxxx>
---
fs/nfs/internal.h | 3 +++
fs/nfs/pagelist.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
fs/nfs/read.c | 26 ++------------------------
fs/nfs/write.c | 46 ++++------------------------------------------
4 files changed, 53 insertions(+), 66 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index e34220f..519864b 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -242,6 +242,8 @@ struct nfs_rw_header *nfs_rw_header_alloc(const struct nfs_rw_ops *);
void nfs_rw_header_free(struct nfs_pgio_header *);
struct nfs_pgio_data *nfs_pgio_data_alloc(struct nfs_pgio_header *, unsigned int);
void nfs_pgio_data_release(struct nfs_pgio_data *);
+void nfs_pgio_rpcsetup(struct nfs_pgio_data *, unsigned int, unsigned int, int,
+ struct nfs_commit_info *);
static inline void nfs_iocounter_init(struct nfs_io_counter *c)
{
@@ -446,6 +448,7 @@ 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/pagelist.c b/fs/nfs/pagelist.c
index aabff78..0ccd951 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -389,6 +389,50 @@ void nfs_pgio_data_release(struct nfs_pgio_data *data)
EXPORT_SYMBOL_GPL(nfs_pgio_data_release);
/**
+ * nfs_pgio_rpcsetup - Set up arguments for a pageio call
+ * @data: The pageio data
+ * @count: Number of bytes to read
+ * @offset: Initial offset
+ * @how: How to commit data (writes only)
+ * @cinfo: Commit information for the call (writes only)
+ */
+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);
+}
+
+/**
* nfs_pgio_prepare - Prepare pageio data to go over the wire
* @task: The current task
* @calldata: pageio data to prepare
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index a33490c..0c88c60 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 d877f15..0d367aa 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
--
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