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MD RAID10: Export md_raid10_congested

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md/raid10: Export is_congested test.

In similar fashion to commits
	11d8a6e371
	1ed7242e59
we export the RAID10 congestion checking function so that dm-raid.c can
make use of it and make use of the personality.  The 'queue' and 'gendisk'
structures will not be available to the MD code when device-mapper sets
up the device, so we conditionalize access to these fields also.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Jonathan Brassow
2012-07-31 10:03:53 +10:00
committed by NeilBrown
parent 473e87ce48
commit cc4d1efdd0
2 changed files with 37 additions and 22 deletions
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drivers/md/raid10.h
+3
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@@ -145,4 +145,7 @@ enum r10bio_state {
*/
R10BIO_Previous,
};
extern int md_raid10_congested(struct mddev *mddev, int bits);
#endif