[PATCH] loop: Make user notify for adding loop device failed

From	Minfei Huang <mnghuan@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH] loop: Make user notify for adding loop device failed
Date	2016-06-07 04:10 +0200
Message-ID	<rHeCR-4O2-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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There is no error number returned if loop driver fails in function
alloc_disk to add new loop device. Add a correct error number to make
user notify in this case.

Signed-off-by: Minfei Huang <mnghuan@gmail.com>
---
 drivers/block/loop.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 1fa8cc2..2caaf6f 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1765,6 +1765,7 @@ static int loop_add(struct loop_device **l, int i)
 	 */
 	queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, lo->lo_queue);
 
+	err = -ENOMEM;
 	disk = lo->lo_disk = alloc_disk(1 << part_shift);
 	if (!disk)
 		goto out_free_queue;
-- 
2.7.4 (Apple Git-66)

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[PATCH] loop: Make user notify for adding loop device failed Minfei Huang <mnghuan@gmail.com> - 2016-06-07 04:10 +0200
  Re: [PATCH] loop: Make user notify for adding loop device failed Ming Lei <ming.lei@canonical.com> - 2016-06-07 04:50 +0200
  Re: [PATCH] loop: Make user notify for adding loop device failed Jeff Moyer <jmoyer@redhat.com> - 2016-06-07 15:50 +0200

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