{"id":2230336,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2230336/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/177747215562.4110156.8990534145359592512.stgit@frogsfrogsfrogs/","project":{"id":8,"url":"http://patchwork.ozlabs.org/api/1.1/projects/8/?format=json","name":"Linux ext4 filesystem development","link_name":"linux-ext4","list_id":"linux-ext4.vger.kernel.org","list_email":"linux-ext4@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<177747215562.4110156.8990534145359592512.stgit@frogsfrogsfrogs>","date":"2026-04-29T15:01:13","name":"[10/10] fuse4fs: increase attribute timeout in iomap mode","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"2a5aa8bc0e4ff391699eea66ce2b265da2c0b0ea","submitter":{"id":77032,"url":"http://patchwork.ozlabs.org/api/1.1/people/77032/?format=json","name":"Darrick J. Wong","email":"djwong@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-ext4/patch/177747215562.4110156.8990534145359592512.stgit@frogsfrogsfrogs/mbox/","series":[{"id":502091,"url":"http://patchwork.ozlabs.org/api/1.1/series/502091/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=502091","date":"2026-04-29T14:59:24","name":"[01/10] fuse2fs: add strictatime/lazytime mount options","version":1,"mbox":"http://patchwork.ozlabs.org/series/502091/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2230336/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2230336/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-ext4@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=ciHKo6Vw;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=150.107.74.76; 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arc=none smtp.client-ip=10.30.226.201"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1777474873;\n\tbh=Cvt3s9nv0WmmjasPQjtoyo7FZdZ46hpRXMa3yGH9jCg=;\n\th=Date:Subject:From:To:Cc:In-Reply-To:References:From;\n\tb=ciHKo6VwGHfaHCl79cyzD4OCPN2h0WpgeLAPXB3U3gpT+N2NEkkOno4nLs0txjvU+\n\t jDUOlzTV7LXARqmuT7jCdOydD8k46gf1crUO709vlIFcFSYI+7x/wrq0beWA1bSJcr\n\t iM3IhtsgArqrbzKICp8W716RkmksqfGrLkYon+ZvUQE/lXbwvapBsz+llo7mMPaQls\n\t UVrgm+XXcWkSyt59qg1BW+OoJsrcslECX2rm3aYj1yoTIJ3JtfFMXw6oy/GUJ6kglh\n\t LERtGmHx6oEYcMHEHYhiqu4bcnAeklgMJS6F73aIptSslJV2tbfWie/E4PudvAFFRL\n\t jVXHdDDwHpVBg==","Date":"Wed, 29 Apr 2026 08:01:13 -0700","Subject":"[PATCH 10/10] fuse4fs: increase attribute timeout in iomap mode","From":"\"Darrick J. Wong\" ","To":"tytso@mit.edu","Cc":"bernd@bsbernd.com, miklos@szeredi.hu, linux-ext4@vger.kernel.org,\n neal@gompa.dev, linux-fsdevel@vger.kernel.org, fuse-devel@lists.linux.dev,\n joannelkoong@gmail.com","Message-ID":"<177747215562.4110156.8990534145359592512.stgit@frogsfrogsfrogs>","In-Reply-To":"<177747215344.4110156.17216553139316774040.stgit@frogsfrogsfrogs>","References":"<177747215344.4110156.17216553139316774040.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","X-Spam-Status":"No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org"},"content":"From: Darrick J. Wong \n\nIn iomap mode, we trust the kernel to cache file attributes, because it\nis critical to keep all of the file IO permissions checking in the\nkernel as part of keeping all the file IO paths in the kernel.\nTherefore, increase the attribute timeout to 30 seconds to reduce the\nnumber of upcalls even further.\n\nSigned-off-by: \"Darrick J. Wong\" \n---\n fuse4fs/fuse4fs.c | 15 ++++++++++++---\n 1 file changed, 12 insertions(+), 3 deletions(-)","diff":"diff --git a/fuse4fs/fuse4fs.c b/fuse4fs/fuse4fs.c\nindex b4105333f4fe22..9f7fe365ccdf87 100644\n--- a/fuse4fs/fuse4fs.c\n+++ b/fuse4fs/fuse4fs.c\n@@ -131,7 +131,8 @@\n #endif\n #endif /* !defined(ENODATA) */\n \n-#define FUSE4FS_ATTR_TIMEOUT\t(0.0)\n+#define FUSE4FS_IOMAP_ATTR_TIMEOUT\t(0.0)\n+#define FUSE4FS_ATTR_TIMEOUT\t\t(30.0)\n \n #ifndef O_DIRECT\n # define O_DIRECT\t(0)\n@@ -2437,8 +2438,14 @@ static int fuse4fs_stat_inode(struct fuse4fs *ff, ext2_ino_t ino,\n \n \tfuse4fs_ino_to_fuse(ff, &entry->ino, ino);\n \tentry->generation = inodep->i_generation;\n-\tentry->attr_timeout = FUSE4FS_ATTR_TIMEOUT;\n-\tentry->entry_timeout = FUSE4FS_ATTR_TIMEOUT;\n+\n+\tif (fuse4fs_iomap_enabled(ff)) {\n+\t\tentry->attr_timeout = FUSE4FS_IOMAP_ATTR_TIMEOUT;\n+\t\tentry->entry_timeout = FUSE4FS_IOMAP_ATTR_TIMEOUT;\n+\t} else {\n+\t\tentry->attr_timeout = FUSE4FS_ATTR_TIMEOUT;\n+\t\tentry->entry_timeout = FUSE4FS_ATTR_TIMEOUT;\n+\t}\n \n \tfstat->iflags = 0;\n \n@@ -2671,6 +2678,8 @@ static void op_statx(fuse_req_t req, fuse_ino_t fino, int flags, int mask,\n \tfuse4fs_finish(ff, ret);\n \tif (ret)\n \t\tfuse_reply_err(req, -ret);\n+\telse if (fuse4fs_iomap_enabled(ff))\n+\t\tfuse_reply_statx(req, 0, &stx, FUSE4FS_IOMAP_ATTR_TIMEOUT);\n \telse\n \t\tfuse_reply_statx(req, 0, &stx, FUSE4FS_ATTR_TIMEOUT);\n }\n","prefixes":["10/10"]}