1 files changed, 0 insertions, 52 deletions

diff --git a/mm/swapfile.c b/mm/swapfile.c
index 44595a373e42..b82c028cfcc6 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -2288,58 +2288,6 @@ int swapcache_prepare(swp_entry_t entry)
 }
 
 /*
- * swap_lock prevents swap_map being freed. Don't grab an extra
- * reference on the swaphandle, it doesn't matter if it becomes unused.
- */
-int valid_swaphandles(swp_entry_t entry, unsigned long *offset)
-{
-        struct swap_info_struct *si;
-        int our_page_cluster = page_cluster;
-        pgoff_t target, toff;
-        pgoff_t base, end;
-        int nr_pages = 0;
-
-        if (!our_page_cluster)  /* no readahead */
-                return 0;
-
-        si = swap_info[swp_type(entry)];
-        target = swp_offset(entry);
-        base = (target >> our_page_cluster) << our_page_cluster;
-        end = base + (1 << our_page_cluster);
-        if (!base)              /* first page is swap header */
-                base++;
-
-        spin_lock(&swap_lock);
-        if (end > si->max)      /* don't go beyond end of map */
-                end = si->max;
-
-        /* Count contiguous allocated slots above our target */
-        for (toff = target; ++toff < end; nr_pages++) {
-                /* Don't read in free or bad pages */
-                if (!si->swap_map[toff])
-                        break;
-                if (swap_count(si->swap_map[toff]) == SWAP_MAP_BAD)
-                        break;
-        }
-        /* Count contiguous allocated slots below our target */
-        for (toff = target; --toff >= base; nr_pages++) {
-                /* Don't read in free or bad pages */
-                if (!si->swap_map[toff])
-                        break;
-                if (swap_count(si->swap_map[toff]) == SWAP_MAP_BAD)
-                        break;
-        }
-        spin_unlock(&swap_lock);
-
-        /*
-         * Indicate starting offset, and return number of pages to get:
-         * if only 1, say 0, since there's then no readahead to be done.
-         */
-        *offset = ++toff;
-        return nr_pages? ++nr_pages: 0;
-}
-
-/*
  * add_swap_count_continuation - called when a swap count is duplicated
  * beyond SWAP_MAP_MAX, it allocates a new page and links that to the entry's
  * page of the original vmalloc'ed swap_map, to hold the continuation count