Commit 816477ed authored by Ira Weiny's avatar Ira Weiny Committed by Jens Wiklander
Browse files

mm: Remove get_kernel_pages() 



The only caller to get_kernel_pages() [shm_get_kernel_pages()] has been
updated to not need it.

Remove get_kernel_pages().

Cc: Mel Gorman <mgorman@suse.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: default avatarJohn Hubbard <jhubbard@nvidia.com>
Signed-off-by: default avatarIra Weiny <ira.weiny@intel.com>
Acked-by: default avatarAndrew Morton <akpm@linux-foudation.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarSumit Garg <sumit.garg@linaro.org>
Signed-off-by: default avatarJens Wiklander <jens.wiklander@linaro.org>
parent 0249a75b

include/linux/mm.h

+0 −2
Original line number Diff line number Diff line
@@ -2095,8 +2095,6 @@ int __account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc, 
			struct task_struct *task, bool bypass_rlim);



struct kvec;

int get_kernel_pages(const struct kvec *iov, int nr_pages, int write,

			struct page **pages);

struct page *get_dump_page(unsigned long addr);



bool folio_mark_dirty(struct folio *folio);

mm/swap.c

+0 −30
Original line number Diff line number Diff line
@@ -158,36 +158,6 @@ void put_pages_list(struct list_head *pages) 
}

EXPORT_SYMBOL(put_pages_list);



/*

 * get_kernel_pages() - pin kernel pages in memory

 * @kiov:	An array of struct kvec structures

 * @nr_segs:	number of segments to pin

 * @write:	pinning for read/write, currently ignored

 * @pages:	array that receives pointers to the pages pinned.

 *		Should be at least nr_segs long.

 *

 * Returns number of pages pinned. This may be fewer than the number requested.

 * If nr_segs is 0 or negative, returns 0.  If no pages were pinned, returns 0.

 * Each page returned must be released with a put_page() call when it is

 * finished with.

 */

int get_kernel_pages(const struct kvec *kiov, int nr_segs, int write,

		struct page **pages)

{

	int seg;



	for (seg = 0; seg < nr_segs; seg++) {

		if (WARN_ON(kiov[seg].iov_len != PAGE_SIZE))

			return seg;



		pages[seg] = kmap_to_page(kiov[seg].iov_base);

		get_page(pages[seg]);

	}



	return seg;

}

EXPORT_SYMBOL_GPL(get_kernel_pages);



typedef void (*move_fn_t)(struct lruvec *lruvec, struct folio *folio);



static void lru_add_fn(struct lruvec *lruvec, struct folio *folio)