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aoe: do not BUG if memory pressure prevented debugfs file creation 

If the system has trouble allocating memory for the creation of the aoe
debugfs directory or of a file inside it, the debugfs member of an aoedev
can be NULL.

Do not treat a NULL debugfs pointer as a BUG on aoedev shutdown, avoiding
the user impact of an unecessary panic.

Signed-off-by: Ed Cashin <ecashin@coraid.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ed Cashin 2013-09-11 14:25:46 -07:00 committed by Linus Torvalds
parent e0ec360597
commit fea1b13973
1 changed files with 0 additions and 1 deletions
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1
drivers/block/aoe/aoeblk.c
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@ -215,7 +215,6 @@ aoedisk_add_debugfs(struct aoedev *d)
void
aoedisk_rm_debugfs(struct aoedev *d)
{
BUG_ON(d->debugfs == NULL);
debugfs_remove(d->debugfs);
d->debugfs = NULL;
}