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Wysocki" , linux-fsdevel@vger.kernel.org Subject: Re: [PATCH v2] fuse: permit freezing while waiting for request answer Message-ID: References: <20260819023542.561653-1-senozhatsky@chromium.org> <20260820084933.GA4036497@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: fuse-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260820084933.GA4036497@noisy.programming.kicks-ass.net> On (26/08/20 10:49), Peter Zijlstra wrote: > Message-ID: <20260820084933.GA4036497@noisy.programming.kicks-ass.net> > > On Wed, Aug 19, 2026 at 12:03:32PM +0200, Miklos Szeredi wrote: > > Why is this unsafe exactly? Does that unsafeness apply to > > filesystems? If so why do we allow freezing while blocked on > > sb_start_write()? > > Getting frozen with lock A held, while another task is blocked on A in > an unfreezable state results in the system not being freezable. Right, but then the system says "suspend failed" (tasks refuse to freeze after 20sec) and just thaws everything back in?