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

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Message-ID: <YMhHtrbKu+iwoacE@infradead.org>
Date:   Tue, 15 Jun 2021 07:24:54 +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 v11 01/33] mm: Convert get_page_unless_zero() to return
 bool

On Mon, Jun 14, 2021 at 09:14:03PM +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.

Strange.  Anyway, this looks like the right type, so:

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