diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2016-12-19 16:23:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-20 09:48:47 -0800 |
| commit | 1b011e2f13fcf37e1e577fed25b295808d6c83b9 (patch) | |
| tree | 50bb2b58757f3c578f40dec19c2b42a8d6bc534d /include/xen | |
| parent | 4983f0ab7ffaad1e534b21975367429736475205 (diff) | |
ratelimit: fix WARN_ON_RATELIMIT return value
The macro is to be used similarly as WARN_ON as:
if (WARN_ON_RATELIMIT(condition, state))
do_something();
One would expect only 'condition' to affect the 'if', but
WARN_ON_RATELIMIT does internally only:
WARN_ON((condition) && __ratelimit(state))
So the 'if' is affected by the ratelimiting state too. Fix this by
returning 'condition' in any case.
Note that nobody uses WARN_ON_RATELIMIT yet, so there is nothing to
worry about. But I was about to use it and was a bit surprised.
Link: http://lkml.kernel.org/r/20161215093224.23126-1-jslaby@suse.cz
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/xen')