This will make it possible to clear the lseg pointer in the same
function as it is put, instead of in the caller nfs_pageio_doio().
Signed-off-by: Fred Isaman <iisaman@xxxxxxxxxx>
---
fs/nfs/pagelist.c | 10 ++--------
fs/nfs/read.c | 42 +++++++++++++++++++++++++-----------------
fs/nfs/write.c | 28 ++++++++++++++++------------
include/linux/nfs_page.h | 4 ++--
4 files changed, 45 insertions(+), 39 deletions(-)
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 45b0fb8..9f62874 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -214,7 +214,7 @@ nfs_wait_on_request(struct nfs_page *req)
*/
void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
struct inode *inode,
- int (*doio)(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *),
+ int (*doio)(struct nfs_pageio_descriptor *),
size_t bsize,
int io_flags)
{
@@ -311,13 +311,7 @@ static int nfs_pageio_do_add_request(struct nfs_pageio_descriptor *desc,
static void nfs_pageio_doio(struct nfs_pageio_descriptor *desc)
{
if (!list_empty(&desc->pg_list)) {
- int error = desc->pg_doio(desc->pg_inode,
- &desc->pg_list,
- nfs_page_array_len(desc->pg_base,
- desc->pg_count),
- desc->pg_count,
- desc->pg_ioflags,
- desc->pg_lseg);
+ int error = desc->pg_doio(desc);
desc->pg_lseg = NULL;
if (error < 0)
desc->pg_error = error;
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index f40c7f4..ab9c776 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -31,8 +31,8 @@
#define NFSDBG_FACILITY NFSDBG_PAGECACHE
-static int nfs_pagein_multi(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *);
-static int nfs_pagein_one(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *);
+static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc);
+static int nfs_pagein_one(struct nfs_pageio_descriptor *desc);
static const struct rpc_call_ops nfs_read_partial_ops;
static const struct rpc_call_ops nfs_read_full_ops;
@@ -117,9 +117,9 @@ static void nfs_readpage_truncate_uninitialised_page(struct nfs_read_data *data)
int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode,
struct page *page)
{
- LIST_HEAD(one_request);
struct nfs_page *new;
unsigned int len;
+ struct nfs_pageio_descriptor pgio;
len = nfs_page_length(page);
if (len == 0)
@@ -132,11 +132,14 @@ int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode,
if (len < PAGE_CACHE_SIZE)
zero_user_segment(page, len, PAGE_CACHE_SIZE);
- nfs_list_add_request(new, &one_request);
+ nfs_pageio_init(&pgio, inode, NULL, 0, 0);
+ nfs_list_add_request(new, &pgio.pg_list);
+ pgio.pg_count = len;
+
if (NFS_SERVER(inode)->rsize < PAGE_CACHE_SIZE)
- nfs_pagein_multi(inode, &one_request, 1, len, 0, NULL);
+ nfs_pagein_multi(&pgio);
else
- nfs_pagein_one(inode, &one_request, 1, len, 0, NULL);
+ nfs_pagein_one(&pgio);
return 0;
}
@@ -258,20 +261,21 @@ nfs_async_read_error(struct list_head *head)
* won't see the new data until our attribute cache is updated. This is more
* or less conventional NFS client behavior.
*/
-static int nfs_pagein_multi(struct inode *inode, struct list_head *head, unsigned int npages, size_t count, int flags, struct pnfs_layout_segment *lseg)
+static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc)
{
- struct nfs_page *req = nfs_list_entry(head->next);
+ struct nfs_page *req = nfs_list_entry(desc->pg_list.next);
struct page *page = req->wb_page;
struct nfs_read_data *data;
- size_t rsize = NFS_SERVER(inode)->rsize, nbytes;
+ size_t rsize = NFS_SERVER(desc->pg_inode)->rsize, nbytes;
unsigned int offset;
int requests = 0;
int ret = 0;
+ struct pnfs_layout_segment *lseg;
LIST_HEAD(list);
nfs_list_remove_request(req);
- nbytes = count;
+ nbytes = desc->pg_count;
do {
size_t len = min(nbytes,rsize);
@@ -284,11 +288,11 @@ static int nfs_pagein_multi(struct inode *inode, struct list_head *head, unsigne
} while(nbytes != 0);
atomic_set(&req->wb_complete, requests);
- /* We know lseg==NULL */
- lseg = pnfs_update_layout(inode, req->wb_context, IOMODE_READ);
+ BUG_ON(desc->pg_lseg != NULL);
+ lseg = pnfs_update_layout(desc->pg_inode, req->wb_context, IOMODE_READ);
ClearPageError(page);
offset = 0;
- nbytes = count;
+ nbytes = desc->pg_count;
do {
int ret2;
@@ -321,14 +325,17 @@ out_bad:
return -ENOMEM;
}
-static int nfs_pagein_one(struct inode *inode, struct list_head *head, unsigned int npages, size_t count, int flags, struct pnfs_layout_segment *lseg)
+static int nfs_pagein_one(struct nfs_pageio_descriptor *desc)
{
struct nfs_page *req;
struct page **pages;
struct nfs_read_data *data;
+ struct list_head *head = &desc->pg_list;
+ struct pnfs_layout_segment *lseg = desc->pg_lseg;
int ret = -ENOMEM;
- data = nfs_readdata_alloc(npages);
+ data = nfs_readdata_alloc(nfs_page_array_len(desc->pg_base,
+ desc->pg_count));
if (!data) {
nfs_async_read_error(head);
goto out;
@@ -344,9 +351,10 @@ static int nfs_pagein_one(struct inode *inode, struct list_head *head, unsigned
}
req = nfs_list_entry(data->pages.next);
if ((!lseg) && list_is_singular(&data->pages))
- lseg = pnfs_update_layout(inode, req->wb_context, IOMODE_READ);
+ lseg = pnfs_update_layout(desc->pg_inode, req->wb_context, IOMODE_READ);
- ret = nfs_read_rpcsetup(req, data, &nfs_read_full_ops, count, 0, lseg);
+ ret = nfs_read_rpcsetup(req, data, &nfs_read_full_ops, desc->pg_count,
+ 0, lseg);
out:
put_lseg(lseg);
return ret;
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 06a1f3f..ccc7c22 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -898,20 +898,21 @@ static void nfs_redirty_request(struct nfs_page *req)
* Generate multiple small requests to write out a single
* contiguous dirty area on one page.
*/
-static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned int npages, size_t count, int how, struct pnfs_layout_segment *lseg)
+static int nfs_flush_multi(struct nfs_pageio_descriptor *desc)
{
- struct nfs_page *req = nfs_list_entry(head->next);
+ struct nfs_page *req = nfs_list_entry(desc->pg_list.next);
struct page *page = req->wb_page;
struct nfs_write_data *data;
- size_t wsize = NFS_SERVER(inode)->wsize, nbytes;
+ size_t wsize = NFS_SERVER(desc->pg_inode)->wsize, nbytes;
unsigned int offset;
int requests = 0;
int ret = 0;
+ struct pnfs_layout_segment *lseg;
LIST_HEAD(list);
nfs_list_remove_request(req);
- nbytes = count;
+ nbytes = desc->pg_count;
do {
size_t len = min(nbytes, wsize);
@@ -924,11 +925,11 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
} while (nbytes != 0);
atomic_set(&req->wb_complete, requests);
- BUG_ON(lseg);
- lseg = pnfs_update_layout(inode, req->wb_context, IOMODE_RW);
+ BUG_ON(desc->pg_lseg);
+ lseg = pnfs_update_layout(desc->pg_inode, req->wb_context, IOMODE_RW);
ClearPageError(page);
offset = 0;
- nbytes = count;
+ nbytes = desc->pg_count;
do {
int ret2;
@@ -940,7 +941,7 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
if (nbytes < wsize)
wsize = nbytes;
ret2 = nfs_write_rpcsetup(req, data, &nfs_write_partial_ops,
- wsize, offset, lseg, how);
+ wsize, offset, lseg, desc->pg_ioflags);
if (ret == 0)
ret = ret2;
offset += wsize;
@@ -968,14 +969,17 @@ out_bad:
* This is the case if nfs_updatepage detects a conflicting request
* that has been written but not committed.
*/
-static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned int npages, size_t count, int how, struct pnfs_layout_segment *lseg)
+static int nfs_flush_one(struct nfs_pageio_descriptor *desc)
{
struct nfs_page *req;
struct page **pages;
struct nfs_write_data *data;
+ struct list_head *head = &desc->pg_list;
+ struct pnfs_layout_segment *lseg = desc->pg_lseg;
int ret;
- data = nfs_writedata_alloc(npages);
+ data = nfs_writedata_alloc(nfs_page_array_len(desc->pg_base,
+ desc->pg_count));
if (!data) {
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
@@ -995,10 +999,10 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
}
req = nfs_list_entry(data->pages.next);
if ((!lseg) && list_is_singular(&data->pages))
- lseg = pnfs_update_layout(inode, req->wb_context, IOMODE_RW);
+ lseg = pnfs_update_layout(desc->pg_inode, req->wb_context, IOMODE_RW);
/* Set up the argument struct */
- ret = nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, lseg, how);
+ ret = nfs_write_rpcsetup(req, data, &nfs_write_full_ops, desc->pg_count, 0, lseg, desc->pg_ioflags);
out:
put_lseg(lseg); /* Cleans any gotten in ->pg_test */
return ret;
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index ba88ff4..90907ad 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -59,7 +59,7 @@ struct nfs_pageio_descriptor {
unsigned int pg_base;
struct inode *pg_inode;
- int (*pg_doio)(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *);
+ int (*pg_doio)(struct nfs_pageio_descriptor *);
int pg_ioflags;
int pg_error;
struct pnfs_layout_segment *pg_lseg;
@@ -81,7 +81,7 @@ extern int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *dst,
pgoff_t idx_start, unsigned int npages, int tag);
extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
struct inode *inode,
- int (*doio)(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *),
+ int (*doio)(struct nfs_pageio_descriptor *desc),
size_t bsize,
int how);
extern int nfs_pageio_add_request(struct nfs_pageio_descriptor *,
--
1.7.2.1
--
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