[PATCH] pagemap_lru_lock wrapup

Some fallout from the pagemap_lru_lock changes:

- lru_cache_del() is no longer used.  Kill it.

- page_cache_release() almost never actually frees pages.  So inline
  page_cache_release() and move its rarely-called slow path into (the
  misnamed) mm/swap.c

- update the locking comment in filemap.c.  pagemap_lru_lock used to
  be one of the outermost locks in the VM locking hierarchy.  Now, we
  never take any other locks while holding pagemap_lru_lock.  So it
  doesn't have any relationship with anything.

- put_page() now removes pages from the LRU on the final put.  The
  lock is interrupt safe.

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/ksyms.c b/kernel/ksyms.c
index 011b4983ce91..dff658338907 100644
--- a/kernel/ksyms.c
+++ b/kernel/ksyms.c
@@ -93,7 +93,7 @@ EXPORT_SYMBOL(__alloc_pages);
 EXPORT_SYMBOL(alloc_pages_node);
 EXPORT_SYMBOL(__get_free_pages);
 EXPORT_SYMBOL(get_zeroed_page);
-EXPORT_SYMBOL(page_cache_release);
+EXPORT_SYMBOL(__page_cache_release);
 EXPORT_SYMBOL(__free_pages);
 EXPORT_SYMBOL(free_pages);
 EXPORT_SYMBOL(num_physpages);