linux-kernel - Re: [PATCH v3 4/4] fs/sysv: Replace kmap() with kmap_local

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Message-ID: <Y8oWsiNWSXlDNn5i@ZenIV>
Date:   Fri, 20 Jan 2023 04:21:06 +0000
From:   Al Viro <viro@...iv.linux.org.uk>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Ira Weiny <ira.weiny@...el.com>
Subject: Re: [PATCH v3 4/4] fs/sysv: Replace kmap() with kmap_local_page()

On Thu, Jan 19, 2023 at 04:32:32PM +0100, Fabio M. De Francesco wrote:

> -inline void dir_put_page(struct page *page)
> +inline void dir_put_page(struct page *page, void *page_addr)
>  {
> -	kunmap(page);
> +	kunmap_local(page_addr);

... and that needed to be fixed - at some point "round down to beginning of
page" got lost in rebasing...