From c2c4986eddaa7dc3d036cb2bfa5c8c5f1f2492a0 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 20 May 2010 09:18:47 +0200 Subject: writeback: fix problem with !CONFIG_BLOCK compilation When CONFIG_BLOCK isn't enabled: mm/page-writeback.c: In function 'laptop_mode_timer_fn': mm/page-writeback.c:708: error: dereferencing pointer to incomplete type mm/page-writeback.c:709: error: dereferencing pointer to incomplete type Fix this by essentially eliminating the laptop sync handlers when CONFIG_BLOCK isn't set, as most are only used from the block layer code. The exception is laptop_sync_completion() which is used from sys_sync(), make that an empty declaration in that case. Reported-by: Randy Dunlap Signed-off-by: Jens Axboe --- mm/page-writeback.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'mm/page-writeback.c') diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 0d7bbe85955..9886424e186 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -694,6 +694,7 @@ int dirty_writeback_centisecs_handler(ctl_table *table, int write, return 0; } +#ifdef CONFIG_BLOCK void laptop_mode_timer_fn(unsigned long data) { struct request_queue *q = (struct request_queue *)data; @@ -735,6 +736,7 @@ void laptop_sync_completion(void) rcu_read_unlock(); } +#endif /* * If ratelimit_pages is too high then we can get into dirty-data overload -- cgit v1.2.3