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-rw-r--r--fs/nfs/read.c37
1 files changed, 18 insertions, 19 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 86ced783621..a5e5d9899d5 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -20,8 +20,6 @@
#include <linux/nfs_page.h>
#include <linux/module.h>
-#include "pnfs.h"
-
#include "nfs4_fs.h"
#include "internal.h"
#include "iostat.h"
@@ -50,6 +48,7 @@ struct nfs_read_header *nfs_readhdr_alloc(void)
}
return rhdr;
}
+EXPORT_SYMBOL_GPL(nfs_readhdr_alloc);
static struct nfs_read_data *nfs_readdata_alloc(struct nfs_pgio_header *hdr,
unsigned int pagecount)
@@ -82,6 +81,7 @@ void nfs_readhdr_free(struct nfs_pgio_header *hdr)
kmem_cache_free(nfs_rdata_cachep, rhdr);
}
+EXPORT_SYMBOL_GPL(nfs_readhdr_free);
void nfs_readdata_release(struct nfs_read_data *rdata)
{
@@ -91,13 +91,18 @@ void nfs_readdata_release(struct nfs_read_data *rdata)
put_nfs_open_context(rdata->args.context);
if (rdata->pages.pagevec != rdata->pages.page_array)
kfree(rdata->pages.pagevec);
- if (rdata != &read_header->rpc_data)
- kfree(rdata);
- else
+ if (rdata == &read_header->rpc_data) {
rdata->header = NULL;
+ rdata = NULL;
+ }
if (atomic_dec_and_test(&hdr->refcnt))
hdr->completion_ops->completion(hdr);
+ /* Note: we only free the rpc_task after callbacks are done.
+ * See the comment in rpc_free_task() for why
+ */
+ kfree(rdata);
}
+EXPORT_SYMBOL_GPL(nfs_readdata_release);
static
int nfs_return_empty_page(struct page *page)
@@ -108,13 +113,14 @@ int nfs_return_empty_page(struct page *page)
return 0;
}
-void nfs_pageio_init_read_mds(struct nfs_pageio_descriptor *pgio,
+void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
struct inode *inode,
const struct nfs_pgio_completion_ops *compl_ops)
{
nfs_pageio_init(pgio, inode, &nfs_pageio_read_ops, compl_ops,
NFS_SERVER(inode)->rsize, 0);
}
+EXPORT_SYMBOL_GPL(nfs_pageio_init_read);
void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio)
{
@@ -123,14 +129,6 @@ void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio)
}
EXPORT_SYMBOL_GPL(nfs_pageio_reset_read_mds);
-void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
- struct inode *inode,
- const struct nfs_pgio_completion_ops *compl_ops)
-{
- if (!pnfs_pageio_init_read(pgio, inode, compl_ops))
- nfs_pageio_init_read_mds(pgio, inode, compl_ops);
-}
-
int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode,
struct page *page)
{
@@ -149,7 +147,7 @@ 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_pageio_init_read(&pgio, inode, &nfs_async_read_completion_ops);
+ NFS_PROTO(inode)->read_pageio_init(&pgio, inode, &nfs_async_read_completion_ops);
nfs_pageio_add_request(&pgio, new);
nfs_pageio_complete(&pgio);
NFS_I(inode)->read_io += pgio.pg_bytes_written;
@@ -407,6 +405,7 @@ int nfs_generic_pagein(struct nfs_pageio_descriptor *desc,
return nfs_pagein_multi(desc, hdr);
return nfs_pagein_one(desc, hdr);
}
+EXPORT_SYMBOL_GPL(nfs_generic_pagein);
static int nfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc)
{
@@ -532,11 +531,11 @@ static const struct rpc_call_ops nfs_read_common_ops = {
int nfs_readpage(struct file *file, struct page *page)
{
struct nfs_open_context *ctx;
- struct inode *inode = page->mapping->host;
+ struct inode *inode = page_file_mapping(page)->host;
int error;
dprintk("NFS: nfs_readpage (%p %ld@%lu)\n",
- page, PAGE_CACHE_SIZE, page->index);
+ page, PAGE_CACHE_SIZE, page_file_index(page));
nfs_inc_stats(inode, NFSIOS_VFSREADPAGE);
nfs_add_stats(inode, NFSIOS_READPAGES, 1);
@@ -590,7 +589,7 @@ static int
readpage_async_filler(void *data, struct page *page)
{
struct nfs_readdesc *desc = (struct nfs_readdesc *)data;
- struct inode *inode = page->mapping->host;
+ struct inode *inode = page_file_mapping(page)->host;
struct nfs_page *new;
unsigned int len;
int error;
@@ -652,7 +651,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
if (ret == 0)
goto read_complete; /* all pages were read */
- nfs_pageio_init_read(&pgio, inode, &nfs_async_read_completion_ops);
+ NFS_PROTO(inode)->read_pageio_init(&pgio, inode, &nfs_async_read_completion_ops);
ret = read_cache_pages(mapping, pages, readpage_async_filler, &desc);