libceph: remove ceph_get_direct_page_vector() (97a385e5) · Commits · 戴 / test

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);

+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;