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authorJens Axboe <jens.axboe@oracle.com>2010-05-20 11:18:47 +0400
committerJens Axboe <jens.axboe@oracle.com>2010-05-21 22:01:03 +0400
commitc2c4986eddaa7dc3d036cb2bfa5c8c5f1f2492a0 (patch)
tree4787499c06028f73c770daadae772c9af7c3499c /mm
parentb403a98e260f3a8c7c33f58a07c7ae549852170f (diff)
downloadlinux-c2c4986eddaa7dc3d036cb2bfa5c8c5f1f2492a0.tar.xz
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 <randy.dunlap@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'mm')
-rw-r--r--mm/page-writeback.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 0d7bbe859550..9886424e1864 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