linux-kernel - Re: [Linux-nvdimm] [PATCH 4/6] SQUSHME: pmem: Micro cleaning

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Message-ID: <CAPcyv4hLL0o2DHtFhBeBdZ-B5zYjXYBBbp-Xn70UMgoO-kB8vA@mail.gmail.com>
Date:	Tue, 31 Mar 2015 08:17:51 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	Boaz Harrosh <boaz@...xistor.com>
Cc:	Christoph Hellwig <hch@....de>, Jens Axboe <axboe@...nel.dk>,
	linux-nvdimm <linux-nvdimm@...1.01.org>, X86 ML <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [Linux-nvdimm] [PATCH 4/6] SQUSHME: pmem: Micro cleaning

On Tue, Mar 31, 2015 at 6:27 AM, Boaz Harrosh <boaz@...xistor.com> wrote:
>
> Some error checks had unlikely some did not. Put unlikely
> on all error handling paths.
> (I like unlikely for error paths specially for readability)

"unlikely()" is not a readability hint, it's specifically for branches
that profiling shows adding it makes a difference.  Just delete them
all until profiling show they make a difference.  They certainly don't
make a difference in the slow paths.
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