To catch the error in updating the swap cache shadow entries or their count.
Signed-off-by: "Huang, Ying" <[email protected]> Cc: Minchan Kim <[email protected]> Cc: Joonsoo Kim <[email protected]>, Cc: Johannes Weiner <[email protected]>, Cc: Vlastimil Babka <[email protected]>, Hugh Dickins <[email protected]>, Cc: Mel Gorman <[email protected]>, Cc: Michal Hocko <[email protected]>, Cc: Dan Williams <[email protected]>, Cc: Christoph Hellwig <[email protected]>, Ilya Dryomov <[email protected]>, --- mm/swap_state.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/mm/swap_state.c b/mm/swap_state.c index d0d417efeecc..240a4f97594a 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -703,7 +703,12 @@ int init_swap_address_space(unsigned int type, unsigned long nr_pages) void exit_swap_address_space(unsigned int type) { - kvfree(swapper_spaces[type]); + int i; + struct address_space *spaces = swapper_spaces[type]; + + for (i = 0; i < nr_swapper_spaces[type]; i++) + VM_BUG_ON(spaces[i].nrexceptional); + kvfree(spaces); nr_swapper_spaces[type] = 0; swapper_spaces[type] = NULL; } -- 2.29.2
