Commit b6ac23af authored Apr 15, 2010 by Divyesh Shah Committed by Jens Axboe Apr 15, 2010

blkio: fix for modular blk-cgroup build



After merging the block tree, 20100414's linux-next build (x86_64
allmodconfig) failed like this:

ERROR: "get_gendisk" [block/blk-cgroup.ko] undefined!
ERROR: "sched_clock" [block/blk-cgroup.ko] undefined!

This happens because the two symbols aren't exported and hence not available
when blk-cgroup code is built as a module. I've tried to stay consistent with
the use of EXPORT_SYMBOL or EXPORT_SYMBOL_GPL with the other symbols in the
respective files.

Signed-off-by: Divyesh Shah <dpshah@google.com>
Acked-by: Gui Jianfeng <guijianfeng@cn.fujitsu.cn>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent c0d97e9c

block/genhd.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -596,6 +596,7 @@ struct gendisk get_gendisk(dev_t devt, int partno)

		return disk;
		}
		EXPORT_SYMBOL(get_gendisk);

		/**
		* bdget_disk - do bdget() by gendisk and partition number

kernel/sched_clock.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,7 @@ unsigned long long __attribute__((weak)) sched_clock(void)
		return (unsigned long long)(jiffies - INITIAL_JIFFIES)
		* (NSEC_PER_SEC / HZ);
		}
		EXPORT_SYMBOL_GPL(sched_clock);

		static __read_mostly int sched_clock_running;