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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>
hifive-unleashed-5.1
Divyesh Shah 2010-04-15 08:54:59 +02:00 committed by Jens Axboe
parent c0d97e9ca2
commit b6ac23af2c
2 changed files with 2 additions and 0 deletions
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1
block/genhd.c
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@ -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

1
kernel/sched_clock.c
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@ -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;