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Fri, 02 Feb 2024 01:09:10 -0800 (PST) MIME-Version: 1.0 References: <2701318.1706863882@warthog.procyon.org.uk> In-Reply-To: <2701318.1706863882@warthog.procyon.org.uk> From: Miklos Szeredi Date: Fri, 2 Feb 2024 10:08:59 +0100 Message-ID: Subject: Re: [LSF/MM/BPF TOPIC] Replacing TASK_(UN)INTERRUPTIBLE with regions of uninterruptibility To: David Howells Cc: lsf-pc@lists.linux-foundation.org, Matthew Wilcox , Kent Overstreet , dwmw2@infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 65165140012 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 4nqakhwj8msp1pi6hb8nodkrw4bcr3ek X-HE-Tag: 1706864952-498058 X-HE-Meta: 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 SGl//uOR xIAWVobVUufo0852uttYc3ZrluJjFhMHCWhdEL9eyxrhqOv77RBXZJShdeoOBcNTlFiKGYvqhFUwRErIG3c7bBdFk8ISaXJEgX90uMtNEgPTcdV/tFQU7iZP5WgGiVdCGo48HvP/+BCkp3H3sgl3pYn/yraO0o1x3OZ1Izn6Y4NdsY8Y+bs1i04OejGOXyQ7ZJeFeUlYas0GMH9fvKBsq61NcsLlh09+nCwLGH5Yb1my+DopuMkj5GxKCEjlZTrgofKtO1hoAEYom6WSeyj3kcxUEXqlXL408yxIkZGcT55l7ruE= X-Bogosity: Ham, tests=bogofilter, spamicity=0.065309, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 2 Feb 2024 at 09:51, David Howells wrote: > > Hi, > > We have various locks, mutexes, etc., that are taken on entry to filesystem > code, for example, and a bunch of them are taken interruptibly or killably (or > ought to be) - but filesystem code might be called into from uninterruptible > code, such as the memory allocator, fscache, etc.. Are you suggesting to make lots more filesystem/vfs/mm sleeps killable? That would present problems with being called from certain contexts. Or are there bugs already? Thanks, Miklos