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authorJason Gunthorpe <jgg@nvidia.com>2023-01-24 23:34:31 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-02-10 03:51:45 +0300
commitedad1bb1fbf7e28b49bf76b2aa66bfcaba00f627 (patch)
treef62fbfe374dcb6fd435098df834e3bd6fe005f08 /mm
parent9a863a6a51394bff480c959b713874c090a8f5c6 (diff)
downloadlinux-edad1bb1fbf7e28b49bf76b2aa66bfcaba00f627.tar.xz
mm/gup: remove pin_user_pages_fast_only()
Commit ed29c2691188 ("drm/i915: Fix userptr so we do not have to worry about obj->mm.lock, v7.") removed the only caller, remove this dead code too. Link: https://lkml.kernel.org/r/10-v2-987e91b59705+36b-gup_tidy_jgg@nvidia.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Claudio Imbrenda <imbrenda@linux.ibm.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/gup.c33
1 files changed, 0 insertions, 33 deletions
diff --git a/mm/gup.c b/mm/gup.c
index 4ce88e00e1c6..91c8ab53f43f 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -3102,39 +3102,6 @@ int pin_user_pages_fast(unsigned long start, int nr_pages,
}
EXPORT_SYMBOL_GPL(pin_user_pages_fast);
-/*
- * This is the FOLL_PIN equivalent of get_user_pages_fast_only(). Behavior
- * is the same, except that this one sets FOLL_PIN instead of FOLL_GET.
- *
- * The API rules are the same, too: no negative values may be returned.
- */
-int pin_user_pages_fast_only(unsigned long start, int nr_pages,
- unsigned int gup_flags, struct page **pages)
-{
- int nr_pinned;
-
- /*
- * FOLL_FAST_ONLY is required in order to match the API description of
- * this routine: no fall back to regular ("slow") GUP.
- */
- if (!is_valid_gup_args(pages, NULL, NULL, &gup_flags,
- FOLL_PIN | FOLL_FAST_ONLY))
- return 0;
-
- nr_pinned = internal_get_user_pages_fast(start, nr_pages, gup_flags,
- pages);
- /*
- * This routine is not allowed to return negative values. However,
- * internal_get_user_pages_fast() *can* return -errno. Therefore,
- * correct for that here:
- */
- if (nr_pinned < 0)
- nr_pinned = 0;
-
- return nr_pinned;
-}
-EXPORT_SYMBOL_GPL(pin_user_pages_fast_only);
-
/**
* pin_user_pages_remote() - pin pages of a remote process
*