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From: Zhao Zhengyu <zhaozhengyu0@gmail.com>
Date: Fri, 31 Jul 2020 08:17:02 +0800
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To: musl@lists.openwall.com
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Subject: [musl] When to reclaim pages in __bin_chunk?

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Hello,

When chunks are merged, we use "(curr_size + pre_size) ^ pre_size >
pre_size" to decide whether to reclaim. I think this may be something
related to performance, but I can=E2=80=99t prove it. I want to know the
reason.

Thank you!

Zhengyu

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<div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><pre st=
yle=3D"color:rgb(0,0,0);white-space:pre-wrap">Hello,</pre><pre><font color=
=3D"#000000"><span style=3D"white-space:pre-wrap">When chunks are merged, w=
e use &quot;(curr_size + pre_size) ^ pre_size &gt; pre_size&quot; to decide=
 whether to reclaim. I think this may be something related to performance, =
but I can=E2=80=99t prove it. I want to know the reason.</span></font></pre=
><pre><font color=3D"#000000"><span style=3D"white-space:pre-wrap">Thank yo=
u!</span></font></pre><pre><font color=3D"#000000"><span style=3D"white-spa=
ce:pre-wrap">Zhengyu</span></font></pre><pre style=3D"color:rgb(0,0,0);whit=
e-space:pre-wrap"><br></pre></div></div></div></div>

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