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Date: Mon, 15 Jan 2007 17:54:50 -0800 From: Nate Diller <nate@...mi.com> To: Nate Diller <nate.diller@...il.com>, Andrew Morton <akpm@...l.org>, Alan Cox <alan@...rguk.ukuu.org.uk>, Trond Myklebust <trond.myklebust@....uio.no>, Benjamin LaHaise <bcrl@...ck.org>, Alexander Viro <viro@...iv.linux.org.uk>, Suparna Bhattacharya <suparna@...ibm.com>, Kenneth W Chen <kenneth.w.chen@...el.com>, David Brownell <dbrownell@...rs.sourceforge.net>, Christoph Hellwig <hch@...radead.org> Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, netdev@...r.kernel.org, ocfs2-devel@....oracle.com, linux-aio@...ck.org, xfs-masters@....sgi.com Subject: [PATCH -mm 0/10][RFC] aio: make struct kiocb private This series is an attempt to generalize the async I/O paths to be implementation agnostic. It completely eliminates knowledge of the kiocb structure in the generic code and makes it private within the current aio code. Things get noticeably cleaner without that layering violation. The new interface takes a file_endio_t function pointer, and a private data pointer, which would normally be aio_complete and a kiocb pointer, respectively. If the aio submission function gets back EIOCBQUEUED, that is a guarantee that the endio function will be called, or *already has been called*. If the file_endio_t pointer provided to aio_[read|write] is NULL, the FS must block on I/O completion, then return either the number of bytes read, or an error. I had to touch more areas that I had originally expected, so there are changes in a corner of the socket code, and a slight behavior change in the direct-io completion path with affects XFS and OCFS2. I would appreciate further review there, so I copied some extra people I hope can help. This patch is against 2.6.20-rc4-mm1. It has been compile-tested at each stage. It needs some runtime testing yet, but I prefer to get it out for commentary and test later. These patches are for RFC only and have not yet been signed off. NATE --- Documentation/filesystems/Locking | 11 + Documentation/filesystems/vfs.txt | 11 + arch/s390/hypfs/inode.c | 16 +- drivers/net/pppoe.c | 8 - drivers/net/tun.c | 13 +- drivers/usb/gadget/inode.c | 239 +------------------------------------- fs/aio.c | 74 ++++++----- fs/bad_inode.c | 10 - fs/block_dev.c | 109 +++++++++++------ fs/cifs/cifsfs.c | 10 - fs/compat.c | 56 -------- fs/direct-io.c | 92 ++++++++------ fs/ecryptfs/file.c | 16 +- fs/ext2/inode.c | 12 - fs/ext3/file.c | 9 - fs/ext3/inode.c | 11 - fs/ext4/file.c | 9 - fs/ext4/inode.c | 11 - fs/fat/inode.c | 12 - fs/fuse/dev.c | 13 +- fs/gfs2/ops_address.c | 14 +- fs/hfs/inode.c | 13 -- fs/hfsplus/inode.c | 13 -- fs/jfs/inode.c | 12 - fs/nfs/direct.c | 92 +++++++------- fs/nfs/file.c | 62 +++++---- fs/ntfs/file.c | 71 ++--------- fs/ocfs2/aops.c | 24 +-- fs/ocfs2/aops.h | 8 - fs/ocfs2/file.c | 44 +++--- fs/ocfs2/inode.h | 2 fs/pipe.c | 12 - fs/read_write.c | 225 ++++++++++++----------------------- fs/read_write.h | 8 - fs/reiserfs/inode.c | 13 -- fs/smbfs/file.c | 28 ++-- fs/udf/file.c | 13 +- fs/xfs/linux-2.6/xfs_aops.c | 44 +++--- fs/xfs/linux-2.6/xfs_file.c | 58 +++++---- fs/xfs/linux-2.6/xfs_lrw.c | 29 ++-- fs/xfs/linux-2.6/xfs_lrw.h | 10 - fs/xfs/linux-2.6/xfs_vnode.h | 20 +-- include/linux/aio.h | 11 - include/linux/fs.h | 114 +++++++++--------- include/linux/net.h | 18 +- include/linux/nfs_fs.h | 12 - include/net/bluetooth/bluetooth.h | 2 include/net/inet_common.h | 3 include/net/scm.h | 2 include/net/sock.h | 45 +------ include/net/tcp.h | 6 include/net/udp.h | 3 mm/filemap.c | 109 ++++++++--------- net/appletalk/ddp.c | 5 net/atm/common.c | 6 net/atm/common.h | 7 - net/ax25/af_ax25.c | 7 - net/bluetooth/af_bluetooth.c | 4 net/bluetooth/hci_sock.c | 7 - net/bluetooth/l2cap.c | 2 net/bluetooth/rfcomm/sock.c | 8 - net/bluetooth/sco.c | 3 net/core/sock.c | 12 - net/dccp/dccp.h | 8 - net/dccp/probe.c | 3 net/dccp/proto.c | 7 - net/decnet/af_decnet.c | 7 - net/econet/af_econet.c | 7 - net/ipv4/af_inet.c | 5 net/ipv4/raw.c | 8 - net/ipv4/tcp.c | 7 - net/ipv4/tcp_probe.c | 3 net/ipv4/udp.c | 9 - net/ipv4/udp_impl.h | 2 net/ipv6/raw.c | 6 net/ipv6/udp.c | 10 - net/ipv6/udp_impl.h | 6 net/ipx/af_ipx.c | 7 - net/irda/af_irda.c | 29 ++-- net/key/af_key.c | 6 net/llc/af_llc.c | 7 - net/netlink/af_netlink.c | 24 +-- net/netrom/af_netrom.c | 7 - net/packet/af_packet.c | 11 - net/rose/af_rose.c | 7 - net/sctp/socket.c | 9 - net/socket.c | 199 +++++++++---------------------- net/tipc/socket.c | 28 +--- net/unix/af_unix.c | 116 +++++++----------- net/wanrouter/af_wanpipe.c | 7 - net/x25/af_x25.c | 6 sound/core/pcm_native.c | 15 +- 92 files changed, 1009 insertions(+), 1500 deletions(-) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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