linux-kernel - RE: [PATCH 5/5] Lib: sort.h: replace int size with size

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Message-ID: <cd57af9a2c1e494cbc8631a0347831dc@AcuMS.aculab.com>
Date:   Mon, 1 Apr 2019 14:47:55 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     "'gregkh@...uxfoundation.org'" <gregkh@...uxfoundation.org>,
        "Andrey Abramov" <st5pub@...dex.ru>
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Subject: RE: [PATCH 5/5] Lib: sort.h: replace int size with size_t size in the
 swap function

From: gregkh@...uxfoundation.org
> Sent: 31 March 2019 11:54
...
> Yes, "int" is a very nice variable for "size", you need to explain why
> it is better to use size_t here please.

Actually, on x86_64 you probably want 'unsigned int' to avoid the
compiler having to generate a sign-extending register move if the
value is ever used in a 64bit expression (eg an address calculation).

	David

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