From: Matthew Wilcox <willy@infradead.org>
To: zhangchun <zhang.chuna@h3c.com>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, jiaoxupo@h3c.com, shaohaojize@126.com
Subject: Re: [PATCH] use might_sleep check if kmap_high is called from atomic context
Date: Tue, 20 Aug 2024 04:24:50 +0100 [thread overview]
Message-ID: <ZsQMgpZpx4oo_a9b@casper.infradead.org> (raw)
In-Reply-To: <1724118791-51554-1-git-send-email-zhang.chuna@h3c.com>
On Tue, Aug 20, 2024 at 09:53:11AM +0800, zhangchun wrote:
> kmap_high is defined as EXPORT_SYMBOL, and cannot be called from atomic
> context. Add might_sleep check is necessary.
No. Nobody should be calling kmap_high() directly. There's already a
might_sleep() in kmap(). No need to add one in kmap_high().
next prev parent reply other threads:[~2024-08-20 3:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-20 1:53 zhangchun
2024-08-20 3:24 ` Matthew Wilcox [this message]
2024-08-20 6:33 ` zhangchun
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