The patch titled
Subject: loop: fix IS_ERR() vs NULL bugs in loop_prepare_queue()
has been added to the -mm tree. Its filename is
loop-use-worker-per-cgroup-instead-of-kworker-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/loop-use-worker-per-cgroup-instead-of-kworker-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/loop-use-worker-per-cgroup-instead-of-kworker-fix.patch
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------------------------------------------------------
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Subject: loop: fix IS_ERR() vs NULL bugs in loop_prepare_queue()
The alloc_workqueue() function returns NULL on error, it never returns
error pointers.
Link: http://lkml.kernel.org/r/20200228172136.h5dvwvrg5yfywxss@kili.mountain
Fixes: 29dab2122492 ("loop: use worker per cgroup instead of kworker")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Dan Schatzberg <schatzberg.dan@xxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/loop.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/block/loop.c~loop-use-worker-per-cgroup-instead-of-kworker-fix
+++ a/drivers/block/loop.c
@@ -901,7 +901,7 @@ static int loop_prepare_queue(struct loo
WQ_UNBOUND | WQ_FREEZABLE |
WQ_MEM_RECLAIM,
lo->lo_number);
- if (IS_ERR(lo->workqueue))
+ if (!lo->workqueue)
return -ENOMEM;
return 0;
_
Patches currently in -mm which might be from dan.carpenter@xxxxxxxxxx are
loop-use-worker-per-cgroup-instead-of-kworker-fix.patch
