{"id":2230302,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2230302/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/177747214626.4107473.1244274603478834116.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":"<177747214626.4107473.1244274603478834116.stgit@frogsfrogsfrogs>","date":"2026-04-29T14:53:55","name":"[05/19] fuse2fs: implement directio file reads","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"752d0f4b4a104ca5067fda3d2a4ddb73b10ce72c","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/177747214626.4107473.1244274603478834116.stgit@frogsfrogsfrogs/mbox/","series":[{"id":502087,"url":"http://patchwork.ozlabs.org/api/1.1/series/502087/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=502087","date":"2026-04-29T14:53:09","name":"[01/19] fuse2fs: implement bare minimum iomap for file mapping reporting","version":1,"mbox":"http://patchwork.ozlabs.org/series/502087/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2230302/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2230302/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=svFnqYk/;\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=1777474436;\n\tbh=YP76nYhAtFv7urlVu7ot7GfWQzJEqUUzn7i0FChmjas=;\n\th=Date:Subject:From:To:Cc:In-Reply-To:References:From;\n\tb=svFnqYk/Ytah1uXoOByst9mELLZ9FAPlvcw/6x44Dkb6EYcGwZK26ATzlBZwuxDft\n\t YNceHaf2DUIo2XtkddvfdbVJmTyjcEgEijFG9gqLtyzFCbvZo4zDDOeuRZWT1Oyz2Y\n\t NwPH3lkVmH5/d3uFp6wVoyY2B4LPxTxWU6i4VSbybjQOE+fygyy21CPOpKm/0YL5fI\n\t l44IOxESYSo7YsATM9hrQgNS69Yb/QgMKQp2h/cooy5nOZ/JMvPhsQ3fYEgtisG0jO\n\t /sDbfWhDoUTKYGhp0lB5WD2HlvS1Fr9YRH+XjF+wX4zyS0QZzAUILo9cd5sd1d5GFm\n\t /0w/c5xyeMwQA==","Date":"Wed, 29 Apr 2026 07:53:55 -0700","Subject":"[PATCH 05/19] fuse2fs: implement directio file reads","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":"<177747214626.4107473.1244274603478834116.stgit@frogsfrogsfrogs>","In-Reply-To":"<177747214459.4107473.9520724883867588970.stgit@frogsfrogsfrogs>","References":"<177747214459.4107473.9520724883867588970.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\nImplement file reads via iomap. Currently only directio is supported.\n\nSigned-off-by: \"Darrick J. Wong\" \n---\n fuse4fs/fuse4fs.c | 14 +++++++++++++-\n misc/fuse2fs.c | 14 +++++++++++++-\n 2 files changed, 26 insertions(+), 2 deletions(-)","diff":"diff --git a/fuse4fs/fuse4fs.c b/fuse4fs/fuse4fs.c\nindex 3e9852f585302d..a1d931aed8f393 100644\n--- a/fuse4fs/fuse4fs.c\n+++ b/fuse4fs/fuse4fs.c\n@@ -6370,7 +6370,19 @@ static int fuse4fs_iomap_begin_read(struct fuse4fs *ff, ext2_ino_t ino,\n \t\t\t\t uint64_t count, uint32_t opflags,\n \t\t\t\t struct fuse_file_iomap *read)\n {\n-\treturn -ENOSYS;\n+\tif (!(opflags & FUSE_IOMAP_OP_DIRECT))\n+\t\treturn -ENOSYS;\n+\n+\t/* fall back to slow path for inline data reads */\n+\tif (inode->i_flags & EXT4_INLINE_DATA_FL)\n+\t\treturn -ENOSYS;\n+\n+\tif (inode->i_flags & EXT4_EXTENTS_FL)\n+\t\treturn fuse4fs_iomap_begin_extent(ff, ino, inode, pos, count,\n+\t\t\t\t\t\t opflags, read);\n+\n+\treturn fuse4fs_iomap_begin_indirect(ff, ino, inode, pos, count,\n+\t\t\t\t\t opflags, read);\n }\n \n static int fuse4fs_iomap_begin_write(struct fuse4fs *ff, ext2_ino_t ino,\ndiff --git a/misc/fuse2fs.c b/misc/fuse2fs.c\nindex c24ae461dad2ad..739867fa41dd91 100644\n--- a/misc/fuse2fs.c\n+++ b/misc/fuse2fs.c\n@@ -5605,7 +5605,19 @@ static int fuse2fs_iomap_begin_read(struct fuse2fs *ff, ext2_ino_t ino,\n \t\t\t\t uint64_t count, uint32_t opflags,\n \t\t\t\t struct fuse_file_iomap *read)\n {\n-\treturn -ENOSYS;\n+\tif (!(opflags & FUSE_IOMAP_OP_DIRECT))\n+\t\treturn -ENOSYS;\n+\n+\t/* fall back to slow path for inline data reads */\n+\tif (inode->i_flags & EXT4_INLINE_DATA_FL)\n+\t\treturn -ENOSYS;\n+\n+\tif (inode->i_flags & EXT4_EXTENTS_FL)\n+\t\treturn fuse2fs_iomap_begin_extent(ff, ino, inode, pos, count,\n+\t\t\t\t\t\t opflags, read);\n+\n+\treturn fuse2fs_iomap_begin_indirect(ff, ino, inode, pos, count,\n+\t\t\t\t\t opflags, read);\n }\n \n static int fuse2fs_iomap_begin_write(struct fuse2fs *ff, ext2_ino_t ino,\n","prefixes":["05/19"]}