From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 604132C21FC; Wed, 29 Oct 2025 01:19:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761700795; cv=none; b=WvCEgZzgWVJcdRT4k6vaEv0HS42o94+Q4oG1w3HP13gac2v7OWWr7m/ouY+DB0hB/bMGx1jGiJrnh6mL1ZBZ+flKAx8IVJile2IaHJdhzW9b0EEpIM19g5TIdtPgNfD2eSWvCrTaEfimrVWTXZm1dYfYGcjcwe5cMMhiymvQH3M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761700795; c=relaxed/simple; bh=tIqE3niI6rEeqcYd1n8f1OsGAoK2Mf/iXvQ3oaSYXfc=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=CUeMiNqJR63wdj88NnmRc1HGX75UJKh74fNRMhP8YT6OO8k36hwX0ElBFDnRJapO6O9FCsUWA3sZLrtyEZgOHu/m8RW2m8r7tL8b8xq0y6uiLpri1S8K/SKkTows0yIQLvbvF+kGpexeEchYh2kbd20mIlHMDFNbzBbpcflFZCg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tahh/ybf; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tahh/ybf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37CAEC4CEE7; Wed, 29 Oct 2025 01:19:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761700795; bh=tIqE3niI6rEeqcYd1n8f1OsGAoK2Mf/iXvQ3oaSYXfc=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=tahh/ybfJsoTxwySS1perxE+OD9bAeK0n0Rgo2OX5uNAA00LNpShUhNznVmd6Qkw0 Eycrx4CUCK3uIOs0JwAbz6LQy3FGT+xgqyQ7KyC/hs4lTJU6O5DnJGQJ6MV3hzhHK0 ZKKp+0qFYpJzs9PdBpmYPVGH5mwQGEGAbcVJez8EiK7mM0Qr9qaJmVSVPdnbYmBcwn cOho/3lZUBp75OukfZZVR6Ditf0axYaZxnkjLAfk0j6F0pyBM0qhCJoDequp57huej Fdu3Z8NwjlLyEVnYXqvWbsUfH1AF1mIYexYiZ04EkEMs56PBE9XpPU2E1hsXB6x0iS 33wwFHN1fUp1A== Date: Tue, 28 Oct 2025 18:19:54 -0700 Subject: [PATCH 5/7] fuse4fs: ask for loop devices when opening via fuservicemount From: "Darrick J. Wong" To: tytso@mit.edu Cc: linux-fsdevel@vger.kernel.org, joannelkoong@gmail.com, bernd@bsbernd.com, neal@gompa.dev, miklos@szeredi.hu, linux-ext4@vger.kernel.org Message-ID: <176169819124.1431292.11049103365311149504.stgit@frogsfrogsfrogs> In-Reply-To: <176169819000.1431292.8063152341472986305.stgit@frogsfrogsfrogs> References: <176169819000.1431292.8063152341472986305.stgit@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Darrick J. Wong When requesting a file, ask the fuservicemount program to transform an open regular file into a loop device for us, so that we can use iomap even when the filesystem is actually an image file. Signed-off-by: "Darrick J. Wong" --- fuse4fs/fuse4fs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fuse4fs/fuse4fs.c b/fuse4fs/fuse4fs.c index fb8a897aa1706e..7edebf6776208a 100644 --- a/fuse4fs/fuse4fs.c +++ b/fuse4fs/fuse4fs.c @@ -1523,7 +1523,8 @@ static int fuse4fs_service_get_config(struct fuse4fs *ff) do { ret = fuse_service_request_file(ff->service, ff->device, - open_flags, 0, 0); + open_flags, 0, + FUSE_SERVICE_REQUEST_FILE_TRYLOOP); if (ret) return ret;