tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/fs/xfs/quota/xfs_dquot.h b/fs/xfs/quota/xfs_dquot.h
index 6533ead..a2c16bc 100644
--- a/fs/xfs/quota/xfs_dquot.h
+++ b/fs/xfs/quota/xfs_dquot.h
@@ -98,7 +98,7 @@
 #define dq_flags	q_lists.dqm_flags
 
 /*
- * Lock hierachy for q_qlock:
+ * Lock hierarchy for q_qlock:
  *	XFS_QLOCK_NORMAL is the implicit default,
  * 	XFS_QLOCK_NESTED is the dquot with the higher id in xfs_dqlock2
  */