On Sat, 4 Feb 2023 at 09:36, Ira Weiny <ira.weiny@xxxxxxxxx> wrote:
>
> 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@xxxxxxx>
> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> Cc: "Fabio M. De Francesco" <fmdefrancesco@xxxxxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Acked-by: John Hubbard <jhubbard@xxxxxxxxxx>
> Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
> ---
> include/linux/mm.h | 2 --
> mm/swap.c | 30 ------------------------------
> 2 files changed, 32 deletions(-)
>
Reviewed-by: Sumit Garg <sumit.garg@xxxxxxxxxx>
-Sumit
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 8f857163ac89..2041e6d4fa27 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -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);
> diff --git a/mm/swap.c b/mm/swap.c
> index 70e2063ef43a..4c03ecab698e 100644
> --- a/mm/swap.c
> +++ b/mm/swap.c
> @@ -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)
>
> --
> 2.39.1
