From: Hugh Dickins <hugh@veritas.com>
Initialize swapper_space.i_mmap_nonlinear, so mapping_mapped reports false on
it (as it used to do). Update comment on swapper_space, now more fields are
used than those initialized explicitly.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/mm/swap_state.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
diff -puN mm/swap_state.c~mm-swapper_spacei_mmap_nonlinear mm/swap_state.c
--- 25/mm/swap_state.c~mm-swapper_spacei_mmap_nonlinear Wed Jun 2 15:12:21 2004
+++ 25-akpm/mm/swap_state.c Wed Jun 2 15:12:21 2004
@@ -19,7 +19,8 @@
/*
* swapper_space is a fiction, retained to simplify the path through
- * vmscan's shrink_list. Only those fields initialized below are used.
+ * vmscan's shrink_list, to make sync_page look nicer, and to allow
+ * future use of radix_tree tags in the swap cache.
*/
static struct address_space_operations swap_aops = {
.writepage = swap_writepage,
@@ -36,6 +37,7 @@ struct address_space swapper_space = {
.page_tree = RADIX_TREE_INIT(GFP_ATOMIC),
.tree_lock = SPIN_LOCK_UNLOCKED,
.a_ops = &swap_aops,
+ .i_mmap_nonlinear = LIST_HEAD_INIT(swapper_space.i_mmap_nonlinear),
.backing_dev_info = &swap_backing_dev_info,
};
_