linux-kernel - Re: [PATCH v14 022/138] mm/filemap: Add __folio_lock_or

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Message-ID: <1796457.1628609695@warthog.procyon.org.uk>
Date:   Tue, 10 Aug 2021 16:34:55 +0100
From:   David Howells <dhowells@...hat.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     dhowells@...hat.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>,
        Jeff Layton <jlayton@...nel.org>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        William Kucharski <william.kucharski@...cle.com>
Subject: Re: [PATCH v14 022/138] mm/filemap: Add __folio_lock_or_retry()

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

> Convert __lock_page_or_retry() to __folio_lock_or_retry().  This actually
> saves 4 bytes in the only caller of lock_page_or_retry() (due to better
> register allocation) and saves the 14 byte cost of calling page_folio()
> in __folio_lock_or_retry() for a total saving of 18 bytes.  Also use
> a bool for the return type.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
> Reviewed-by: Christoph Hellwig <hch@....de>
> Acked-by: Jeff Layton <jlayton@...nel.org>
> Acked-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Reviewed-by: William Kucharski <william.kucharski@...cle.com>

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