Commit dcdbd7b2 authored by Al Viro's avatar Al Viro

net/9p: remove (now-)unused helpers

Signed-off-by: default avatarAl Viro <[email protected]>
parent 21c9f5cc
......@@ -12,12 +12,8 @@
*
*/
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include <linux/scatterlist.h>
#include "trans_common.h"
/**
* p9_release_req_pages - Release pages after the transaction.
......@@ -31,39 +27,3 @@ void p9_release_pages(struct page **pages, int nr_pages)
put_page(pages[i]);
}
EXPORT_SYMBOL(p9_release_pages);
/**
* p9_nr_pages - Return number of pages needed to accommodate the payload.
*/
int p9_nr_pages(char *data, int len)
{
unsigned long start_page, end_page;
start_page = (unsigned long)data >> PAGE_SHIFT;
end_page = ((unsigned long)data + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
return end_page - start_page;
}
EXPORT_SYMBOL(p9_nr_pages);
/**
* payload_gup - Translates user buffer into kernel pages and
* pins them either for read/write through get_user_pages_fast().
* @req: Request to be sent to server.
* @pdata_off: data offset into the first page after translation (gup).
* @pdata_len: Total length of the IO. gup may not return requested # of pages.
* @nr_pages: number of pages to accommodate the payload
* @rw: Indicates if the pages are for read or write.
*/
int p9_payload_gup(char *data, int *nr_pages, struct page **pages, int write)
{
int nr_mapped_pages;
nr_mapped_pages = get_user_pages_fast((unsigned long)data,
*nr_pages, write, pages);
if (nr_mapped_pages <= 0)
return nr_mapped_pages;
*nr_pages = nr_mapped_pages;
return 0;
}
EXPORT_SYMBOL(p9_payload_gup);
......@@ -13,5 +13,3 @@
*/
void p9_release_pages(struct page **, int);
int p9_payload_gup(char *, int *, struct page **, int);
int p9_nr_pages(char *, int);
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