From: Hugh Dickins 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 Signed-off-by: Andrew Morton --- 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, }; _