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userfaultfd: convert BUG() to WARN_ON_ONCE()

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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/[email protected]
Signed-off-by: Andrea Arcangeli <[email protected]>
Cc: "Dr. David Alan Gilbert" <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: Michael Rapoport <[email protected]>
Cc: Mike Kravetz <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Pavel Emelyanov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrea Arcangeli 2017-02-22 15:42:12 -08:00 • committed by Linus Torvalds
commit 8474901a33
1 changed files with 2 additions and 1 deletions
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3
fs/userfaultfd.c
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@ -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;
}
}