linux-kernel - Re: [PATCH v11 01/33] mm: Convert get_page_unless

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Message-ID: <810912.1623835168@warthog.procyon.org.uk>
Date:   Wed, 16 Jun 2021 10:19:28 +0100
From:   David Howells <dhowells@...hat.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     dhowells@...hat.com, akpm@...ux-foundation.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v11 01/33] mm: Convert get_page_unless_zero() to return bool

Matthew Wilcox (Oracle) <willy@...radead.org> wrote:

> atomic_add_unless() returns bool, so remove the widening casts to int
> in page_ref_add_unless() and get_page_unless_zero().  This causes gcc
> to produce slightly larger code in isolate_migratepages_block(), but
> it's not clear that it's worse code.  Net +19 bytes of text.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>

Reviewed-by: David Howells <dhowells@...hat.com>