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authorJiri Slaby <jslaby@suse.cz>2016-12-19 16:23:12 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-20 09:48:47 -0800
commit1b011e2f13fcf37e1e577fed25b295808d6c83b9 (patch)
tree50bb2b58757f3c578f40dec19c2b42a8d6bc534d /net/sunrpc/netns.h
parent4983f0ab7ffaad1e534b21975367429736475205 (diff)
downloadlinux-1b011e2f13fcf37e1e577fed25b295808d6c83b9.tar.gz
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 'net/sunrpc/netns.h')
0 files changed, 0 insertions, 0 deletions