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authorJohn Hubbard <jhubbard@nvidia.com>2021-09-02 14:54:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-03 09:58:11 -0700
commit3969b1a654fb09b7915efc1aa4ad45daf932e12f (patch)
treee9d76382280a92ce59de3ea1a5d32c236ccb53fa /mm/swap.c
parent51cc3a6620a6ca934d468bda345678768493f5d8 (diff)
mm: delete unused get_kernel_page()
get_kernel_page() was added in 2012 by [1]. It was used for a while for NFS, but then in 2014, a refactoring [2] removed all callers, and it has apparently not been used since. Remove get_kernel_page() because it has no callers. [1] commit 18022c5d8627 ("mm: add get_kernel_page[s] for pinning of kernel addresses for I/O") [2] commit 91f79c43d1b5 ("new helper: iov_iter_get_pages_alloc()") Link: https://lkml.kernel.org/r/20210729221847.1165665-1-jhubbard@nvidia.com Signed-off-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Eric B Munson <emunson@mgebm.net> Cc: Eric Paris <eparis@redhat.com> Cc: James Morris <jmorris@namei.org> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: Neil Brown <neilb@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Xiaotian Feng <dfeng@redhat.com> Cc: Mark Salter <msalter@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap.c')
-rw-r--r--mm/swap.c22
1 files changed, 0 insertions, 22 deletions
diff --git a/mm/swap.c b/mm/swap.c
index 19600430e536..897200d27dd0 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -179,28 +179,6 @@ int get_kernel_pages(const struct kvec *kiov, int nr_segs, int write,
}
EXPORT_SYMBOL_GPL(get_kernel_pages);
-/*
- * get_kernel_page() - pin a kernel page in memory
- * @start: starting kernel address
- * @write: pinning for read/write, currently ignored
- * @pages: array that receives pointer to the page pinned.
- * Must be at least nr_segs long.
- *
- * Returns 1 if page is pinned. If the page was not pinned, returns
- * -errno. The page returned must be released with a put_page() call
- * when it is finished with.
- */
-int get_kernel_page(unsigned long start, int write, struct page **pages)
-{
- const struct kvec kiov = {
- .iov_base = (void *)start,
- .iov_len = PAGE_SIZE
- };
-
- return get_kernel_pages(&kiov, 1, write, pages);
-}
-EXPORT_SYMBOL_GPL(get_kernel_page);
-
static void pagevec_lru_move_fn(struct pagevec *pvec,
void (*move_fn)(struct page *page, struct lruvec *lruvec))
{