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

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Message-ID: <YPapQUUSQZ4PZVHw@kernel.org>
Date:   Tue, 20 Jul 2021 13:45:21 +0300
From:   Mike Rapoport <rppt@...nel.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     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()

On Thu, Jul 15, 2021 at 04:35:08AM +0100, Matthew Wilcox (Oracle) 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>
> ---
>  include/linux/pagemap.h | 11 +++++++----
>  mm/filemap.c            | 20 +++++++++-----------
>  mm/memory.c             |  8 ++++----
>  3 files changed, 20 insertions(+), 19 deletions(-)

Acked-by: Mike Rapoport <rppt@...ux.ibm.com>