[PATCH] block/trivial: Fix comment typo "iff".

[Tao Ma]

From: Tao Ma <boyu.mt@xxxxxxxxxx>

Change "iff" to "if".

Cc: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Tao Ma <boyu.mt@xxxxxxxxxx>
---
 block/genhd.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index 6a5b772..4a93d31 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1403,7 +1403,7 @@ static unsigned long disk_events_poll_jiffies(struct gendisk *disk)
 
 	/*
 	 * If device-specific poll interval is set, always use it.  If
-	 * the default is being used, poll iff there are events which
+	 * the default is being used, poll if there are events which
 	 * can't be monitored asynchronously.
 	 */
 	if (ev->poll_msecs >= 0)
-- 
1.7.1

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