linux-kernel - Re: [PATCH] iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE

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Message-ID: <20241028085506.GA27771@lst.de>
Date: Mon, 28 Oct 2024 09:55:06 +0100
From: Christoph Hellwig <hch@....de>
To: Hugh Dickins <hughd@...gle.com>
Cc: Alexander Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christian Brauner <brauner@...nel.org>,
	Matthew Wilcox <willy@...radead.org>,
	Christoph Hellwig <hch@....de>,
	Kent Overstreet <kent.overstreet@...ux.dev>,
	"Darrick J. Wong" <djwong@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] iov_iter: fix copy_page_from_iter_atomic() if
 KMAP_LOCAL_FORCE_MAP

On Sun, Oct 27, 2024 at 03:23:23PM -0700, Hugh Dickins wrote:
> generic/077 on x86_32 CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP=y with highmem,
> on huge=always tmpfs, issues a warning and then hangs (interruptibly):

Looks good:

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