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authorAndrea Arcangeli <aarcange@redhat.com>2017-02-22 15:42:12 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-22 16:41:28 -0800
commit8474901a33d8a27958bfa99e78736863abd67874 (patch)
tree9163a3aafeff6d7854ed7b567af7633eece19eea /fs/userfaultfd.c
parenta4605a61d642fe9b9de050d356432ecac82cc701 (diff)
downloadlwn-8474901a33d8a27958bfa99e78736863abd67874.tar.gz
lwn-8474901a33d8a27958bfa99e78736863abd67874.zip
userfaultfd: convert BUG() to WARN_ON_ONCE()
Avoid BUG_ON()s and only WARN instead. This is just a cleanup, it can't make any runtime difference. This BUG_ON has never triggered and cannot trigger. Link: http://lkml.kernel.org/r/20161216144821.5183-4-aarcange@redhat.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/userfaultfd.c')
-rw-r--r--fs/userfaultfd.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index cf1856cb25d2..71e917387ec3 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -574,7 +574,8 @@ static unsigned int userfaultfd_poll(struct file *file, poll_table *wait)
ret = POLLIN;
return ret;
default:
- BUG();
+ WARN_ON_ONCE(1);
+ return POLLERR;
}
}