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Date:   Tue, 7 Dec 2021 11:11:54 -0800
From:   Eric Biggers <ebiggers@kernel.org>
To:     Alexander Viro <viro@zeniv.linux.org.uk>,
        Benjamin LaHaise <bcrl@kvack.org>
Cc:     linux-aio@kvack.org, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org, Ramji Jiyani <ramjiyani@google.com>,
        Christoph Hellwig <hch@lst.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Oleg Nesterov <oleg@redhat.com>, Jens Axboe <axboe@kernel.dk>,
        Martijn Coenen <maco@android.com>, stable@vger.kernel.org
Subject: Re: [PATCH v2 2/5] binder: use wake_up_pollfree()
Message-ID: <Ya+x+p3YR1PtbD7O@sol.localdomain>
References: <20211207095726.169766-1-ebiggers@kernel.org>
 <20211207095726.169766-3-ebiggers@kernel.org>
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On Tue, Dec 07, 2021 at 01:57:23AM -0800, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@google.com>
> 
> wake_up_poll() uses nr_exclusive=1, so it's not guaranteed to wake up
> all non-exclusive waiters.  Yet, POLLFREE *must* wake up all waiters.

This is supposed to say "all exclusive waiters".  Same in patch 3.

- Eric