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| author |   John Hubbard <jhubbard@nvidia.com> | 2021-09-02 14:54:00 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 09:58:11 -0700 |
| commit | 3969b1a654fb09b7915efc1aa4ad45daf932e12f (patch) | |
| tree | e9d76382280a92ce59de3ea1a5d32c236ccb53fa /mm/swap.c | |
| parent | fs, mm: fix race in unlinking swapfile (diff) | |
| download | linux-dev-3969b1a654fb09b7915efc1aa4ad45daf932e12f.tar.xz linux-dev-3969b1a654fb09b7915efc1aa4ad45daf932e12f.zip | |
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.c | 22 |
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)) { |