From: Bruce Cran <bruce@cran.org.uk>
Date: Mon, 20 Feb 2012 06:59:06 +0000 (+0100)
Subject: nice() error handling
X-Git-Tag: fio-2.0.4~24
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=649c10c59b016ae8586e54746d3761bc6df33c9b;hp=649c10c59b016ae8586e54746d3761bc6df33c9b

nice() error handling

I've attached a patch which fixes a potential issue I noticed while
reading the POSIX specs: nice() can succeed and return -1, so it's
recommended to set errno to 0 and check it afterwards:

"As -1 is a permissible return value in a successful situation, an
application wishing to check for error situations should set errno to 0,
then call nice(), and if it returns -1, check to see whether errno is
non-zero."

Signed-off-by: Jens Axboe <axboe@kernel.dk>
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