linux-kernel - Re: [PATCH v12 01/33] mm: Convert get_page_unless

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Message-ID: <YNLm7wXtTHFjzce6@infradead.org>
Date:   Wed, 23 Jun 2021 08:46:55 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     akpm@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v12 01/33] mm: Convert get_page_unless_zero() to return
 bool

On Tue, Jun 22, 2021 at 12:40:46PM +0100, Matthew Wilcox (Oracle) 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>

Looks good,

Reviewed-by: Christoph Hellwig <hch@....de>