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Commit 5aa2dc0a authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Lachlan McIlroy
Browse files

xfs: add a lock class for group/project dquots 



We can have both a user and a group/project dquot locked at the same time,
as long as the user dquot is locked first.  Tell lockdep about that fact
by making the group/project dquots a different lock class.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDave Chinner <david@fromorbit.com>
parent 4f2d4ac6

fs/xfs/quota/xfs_dquot.c

+11 −1
Original line number Diff line number Diff line
@@ -73,6 +73,8 @@ int xfs_dqreq_num; 
int xfs_dqerror_mod = 33;

#endif



static struct lock_class_key xfs_dquot_other_class;



/*

 * Allocate and initialize a dquot. We don't always allocate fresh memory;

 * we try to reclaim a free dquot if the number of incore dquots are above
@@ -141,6 +143,14 @@ xfs_qm_dqinit( 
#endif

	}



	/*

	 * In either case we need to make sure group quotas have a different

	 * lock class than user quotas, to make sure lockdep knows we can

	 * locks of one of each at the same time.

	 */

	if (!(type & XFS_DQ_USER))

		lockdep_set_class(&dqp->q_qlock, &xfs_dquot_other_class);



	/*

	 * log item gets initialized later

	 */