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NFS: Create a common read and write data struct

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At this point, the only difference between nfs_read_data and
nfs_write_data is the write verifier.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Anna Schumaker
2014-05-06 09:12:26 -04:00
committed by Trond Myklebust
parent 9137bdf3d2
commit 9c7e1b3d50
17 changed files with 150 additions and 164 deletions
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32
fs/nfs/read.c
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@@ -51,10 +51,10 @@ struct nfs_read_header *nfs_readhdr_alloc(void)
}
EXPORT_SYMBOL_GPL(nfs_readhdr_alloc);
static struct nfs_read_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr,
static struct nfs_pgio_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr,
unsigned int pagecount)
{
struct nfs_read_data *data, *prealloc;
struct nfs_pgio_data *data, *prealloc;
prealloc = &container_of(hdr, struct nfs_read_header, header)->rpc_data;
if (prealloc->header == NULL)
@@ -84,7 +84,7 @@ void nfs_readhdr_free(struct nfs_pgio_header *hdr)
}
EXPORT_SYMBOL_GPL(nfs_readhdr_free);
void nfs_readdata_release(struct nfs_read_data *rdata)
void nfs_readdata_release(struct nfs_pgio_data *rdata)
{
struct nfs_pgio_header *hdr = rdata->header;
struct nfs_read_header *read_header = container_of(hdr, struct nfs_read_header, header);
@@ -212,7 +212,7 @@ out:
}
int nfs_initiate_read(struct rpc_clnt *clnt,
struct nfs_read_data *data,
struct nfs_pgio_data *data,
const struct rpc_call_ops *call_ops, int flags)
{
struct inode *inode = data->header->inode;
@@ -255,7 +255,7 @@ EXPORT_SYMBOL_GPL(nfs_initiate_read);
/*
* Set up the NFS read request struct
*/
static void nfs_read_rpcsetup(struct nfs_read_data *data,
static void nfs_read_rpcsetup(struct nfs_pgio_data *data,
unsigned int count, unsigned int offset)
{
struct nfs_page *req = data->header->req;
@@ -274,7 +274,7 @@ static void nfs_read_rpcsetup(struct nfs_read_data *data,
nfs_fattr_init(&data->fattr);
}
static int nfs_do_read(struct nfs_read_data *data,
static int nfs_do_read(struct nfs_pgio_data *data,
const struct rpc_call_ops *call_ops)
{
struct inode *inode = data->header->inode;
@@ -286,13 +286,13 @@ static int
nfs_do_multiple_reads(struct list_head *head,
const struct rpc_call_ops *call_ops)
{
struct nfs_read_data *data;
struct nfs_pgio_data *data;
int ret = 0;
while (!list_empty(head)) {
int ret2;
data = list_first_entry(head, struct nfs_read_data, list);
data = list_first_entry(head, struct nfs_pgio_data, list);
list_del_init(&data->list);
ret2 = nfs_do_read(data, call_ops);
@@ -324,8 +324,8 @@ static void nfs_pagein_error(struct nfs_pageio_descriptor *desc,
{
set_bit(NFS_IOHDR_REDO, &hdr->flags);
while (!list_empty(&hdr->rpc_list)) {
struct nfs_read_data *data = list_first_entry(&hdr->rpc_list,
struct nfs_read_data, list);
struct nfs_pgio_data *data = list_first_entry(&hdr->rpc_list,
struct nfs_pgio_data, list);
list_del(&data->list);
nfs_readdata_release(data);
}
@@ -350,7 +350,7 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc,
{
struct nfs_page *req = hdr->req;
struct page *page = req->wb_page;
struct nfs_read_data *data;
struct nfs_pgio_data *data;
size_t rsize = desc->pg_bsize, nbytes;
unsigned int offset;
@@ -382,7 +382,7 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc,
{
struct nfs_page *req;
struct page **pages;
struct nfs_read_data *data;
struct nfs_pgio_data *data;
struct list_head *head = &desc->pg_list;
data = nfs_readdata_alloc(hdr, nfs_page_array_len(desc->pg_base,
@@ -447,7 +447,7 @@ static const struct nfs_pageio_ops nfs_pageio_read_ops = {
* This is the callback from RPC telling us whether a reply was
* received or some error occurred (timeout or socket shutdown).
*/
int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data)
int nfs_readpage_result(struct rpc_task *task, struct nfs_pgio_data *data)
{
struct inode *inode = data->header->inode;
int status;
@@ -468,7 +468,7 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data)
return 0;
}
static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data)
static void nfs_readpage_retry(struct rpc_task *task, struct nfs_pgio_data *data)
{
struct nfs_pgio_args *argp = &data->args;
struct nfs_pgio_res *resp = &data->res;
@@ -490,7 +490,7 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data
static void nfs_readpage_result_common(struct rpc_task *task, void *calldata)
{
struct nfs_read_data *data = calldata;
struct nfs_pgio_data *data = calldata;
struct nfs_pgio_header *hdr = data->header;
/* Note the only returns of nfs_readpage_result are 0 and -EAGAIN */
@@ -520,7 +520,7 @@ static void nfs_readpage_release_common(void *calldata)
void nfs_read_prepare(struct rpc_task *task, void *calldata)
{
struct nfs_read_data *data = calldata;
struct nfs_pgio_data *data = calldata;
int err;
err = NFS_PROTO(data->header->inode)->read_rpc_prepare(task, data);
if (err)