Commit 97a385e5 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Ilya Dryomov
Browse files

libceph: remove ceph_get_direct_page_vector() 



This function is entirely unused.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarIlya Dryomov <idryomov@gmail.com>
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent 0ecfebd2

include/linux/ceph/libceph.h

+0 −4
Original line number Diff line number Diff line
@@ -299,10 +299,6 @@ int ceph_wait_for_latest_osdmap(struct ceph_client *client, 


/* pagevec.c */

extern void ceph_release_page_vector(struct page **pages, int num_pages);



extern struct page **ceph_get_direct_page_vector(const void __user *data,

						 int num_pages,

						 bool write_page);

extern void ceph_put_page_vector(struct page **pages, int num_pages,

				 bool dirty);

extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);

net/ceph/pagevec.c

+0 −33
Original line number Diff line number Diff line
@@ -10,39 +10,6 @@ 


#include <linux/ceph/libceph.h>



/*

 * build a vector of user pages

 */

struct page **ceph_get_direct_page_vector(const void __user *data,

					  int num_pages, bool write_page)

{

	struct page **pages;

	int got = 0;

	int rc = 0;



	pages = kmalloc_array(num_pages, sizeof(*pages), GFP_NOFS);

	if (!pages)

		return ERR_PTR(-ENOMEM);



	while (got < num_pages) {

		rc = get_user_pages_fast(

		    (unsigned long)data + ((unsigned long)got * PAGE_SIZE),

		    num_pages - got, write_page ? FOLL_WRITE : 0, pages + got);

		if (rc < 0)

			break;

		BUG_ON(rc == 0);

		got += rc;

	}

	if (rc < 0)

		goto fail;

	return pages;



fail:

	ceph_put_page_vector(pages, got, false);

	return ERR_PTR(rc);

}

EXPORT_SYMBOL(ceph_get_direct_page_vector);



void ceph_put_page_vector(struct page **pages, int num_pages, bool dirty)

{

	int i;