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Message-Id: <20141003213317.744562917@linuxfoundation.org>
Date: Fri, 3 Oct 2014 14:35:03 -0700
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Pontus Fuchs <pontus.fuchs@...il.com>,
Jens Axboe <axboe@...com>
Subject: [PATCH 3.10 108/143] genhd: fix leftover might_sleep() in blk_free_devt()
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jens Axboe <axboe@...com>
commit 46f341ffcfb5d8530f7d1e60f3be06cce6661b62 upstream.
Commit 2da78092 changed the locking from a mutex to a spinlock,
so we now longer sleep in this context. But there was a leftover
might_sleep() in there, which now triggers since we do the final
free from an RCU callback. Get rid of it.
Reported-by: Pontus Fuchs <pontus.fuchs@...il.com>
Signed-off-by: Jens Axboe <axboe@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
block/genhd.c | 2 --
1 file changed, 2 deletions(-)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -445,8 +445,6 @@ int blk_alloc_devt(struct hd_struct *par
*/
void blk_free_devt(dev_t devt)
{
- might_sleep();
-
if (devt == MKDEV(0, 0))
return;
--
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