linux-kernel - Re: [PATCH] mm/madvise: break reclaim when lock race

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Message-ID: <Ya+X9IEXiCDFPJIZ@casper.infradead.org>
Date:   Tue, 7 Dec 2021 17:20:52 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     xf2017140389@...il.com
Cc:     akpm@...ux-foundation.org, christian@...uner.io,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        zhangcang@...omi.com, wangju@...omi.com, surenb@...gle.com,
        fangzhirong@...omi.com, xiaofeng <xiaofeng5@...omi.com>
Subject: Re: [PATCH] mm/madvise: break reclaim when lock race

On Tue, Dec 07, 2021 at 11:22:02AM +0800, xf2017140389@...il.com wrote:
> From: xiaofeng <xiaofeng5@...omi.com>
> 
> When the process_madvise() system call is being used, it takes mmap_lock and blocks the application from allocating memory, leading to unreasonable delays. This patchset aims to fix it.

This means that any page fault will cause madvise() to fail.  NACK.