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Subject[PATCH 00/32] AIO performance improvements/cleanups, v3
Date
Last posting: http://article.gmane.org/gmane.linux.kernel.aio.general/3242

As before, changes should mostly be noted in the patch descriptions.

Some random bits:
* flush_dcache_page() patch is new
* Rewrote the aio_read_evt() stuff again
* Fixed a few comments
* Included some more patches, notably the batch completion stuff

My git repo has Jens' aio/dio patches on top of this stuff. As of the
latest version, I'm seeing a couple percent better throughput with the
ring buffer, and I think Jens was seeing a couple percent better with
his linked list approach - at this point I think the difference is
noise, we're both testing with fairly crappy drivers.

Patch series is on top of v3.7, git repo is at
http://evilpiepirate.org/git/linux-bcache.git aio-upstream


Kent Overstreet (27):
aio: Kill return value of aio_complete()
aio: kiocb_cancel()
aio: Move private stuff out of aio.h
aio: dprintk() -> pr_debug()
aio: do fget() after aio_get_req()
aio: Make aio_put_req() lockless
aio: Refcounting cleanup
wait: Add wait_event_hrtimeout()
aio: Make aio_read_evt() more efficient, convert to hrtimers
aio: Use flush_dcache_page()
aio: Use cancellation list lazily
aio: Change reqs_active to include unreaped completions
aio: Kill batch allocation
aio: Kill struct aio_ring_info
aio: Give shared kioctx fields their own cachelines
aio: reqs_active -> reqs_available
aio: percpu reqs_available
Generic dynamic per cpu refcounting
aio: Percpu ioctx refcount
aio: use xchg() instead of completion_lock
aio: Don't include aio.h in sched.h
aio: Kill ki_key
aio: Kill ki_retry
block, aio: Batch completion for bios/kiocbs
virtio-blk: Convert to batch completion
mtip32xx: Convert to batch completion
aio: Smoosh struct kiocb

Zach Brown (5):
mm: remove old aio use_mm() comment
aio: remove dead code from aio.h
gadget: remove only user of aio retry
aio: remove retry-based AIO
char: add aio_{read,write} to /dev/{null,zero}

arch/s390/hypfs/inode.c | 1 +
block/blk-core.c | 34 +-
block/blk-flush.c | 2 +-
block/blk.h | 3 +-
block/scsi_ioctl.c | 1 +
drivers/block/mtip32xx/mtip32xx.c | 68 +-
drivers/block/mtip32xx/mtip32xx.h | 8 +-
drivers/block/swim3.c | 2 +-
drivers/block/virtio_blk.c | 31 +-
drivers/char/mem.c | 36 +
drivers/infiniband/hw/ipath/ipath_file_ops.c | 1 +
drivers/infiniband/hw/qib/qib_file_ops.c | 2 +-
drivers/md/dm.c | 2 +-
drivers/staging/android/logger.c | 1 +
drivers/usb/gadget/inode.c | 42 +-
fs/9p/vfs_addr.c | 1 +
fs/afs/write.c | 1 +
fs/aio.c | 1766 +++++++++++---------------
fs/bio.c | 52 +-
fs/block_dev.c | 1 +
fs/btrfs/file.c | 1 +
fs/btrfs/inode.c | 1 +
fs/ceph/file.c | 1 +
fs/compat.c | 1 +
fs/direct-io.c | 21 +-
fs/ecryptfs/file.c | 1 +
fs/ext2/inode.c | 1 +
fs/ext3/inode.c | 1 +
fs/ext4/file.c | 1 +
fs/ext4/indirect.c | 1 +
fs/ext4/inode.c | 1 +
fs/ext4/page-io.c | 1 +
fs/fat/inode.c | 1 +
fs/fuse/dev.c | 1 +
fs/fuse/file.c | 1 +
fs/gfs2/aops.c | 1 +
fs/gfs2/file.c | 1 +
fs/hfs/inode.c | 1 +
fs/hfsplus/inode.c | 1 +
fs/jfs/inode.c | 1 +
fs/nilfs2/inode.c | 2 +-
fs/ntfs/file.c | 1 +
fs/ntfs/inode.c | 1 +
fs/ocfs2/aops.h | 2 +
fs/ocfs2/dlmglue.c | 2 +-
fs/ocfs2/inode.h | 2 +
fs/pipe.c | 1 +
fs/read_write.c | 35 +-
fs/reiserfs/inode.c | 1 +
fs/ubifs/file.c | 1 +
fs/udf/inode.c | 1 +
fs/xfs/xfs_aops.c | 1 +
fs/xfs/xfs_file.c | 1 +
include/linux/aio.h | 242 +---
include/linux/bio.h | 36 +-
include/linux/blk_types.h | 11 +-
include/linux/blkdev.h | 12 +-
include/linux/cgroup.h | 1 +
include/linux/errno.h | 1 -
include/linux/percpu-refcount.h | 29 +
include/linux/sched.h | 2 -
include/linux/wait.h | 86 ++
kernel/fork.c | 1 +
kernel/printk.c | 1 +
kernel/ptrace.c | 1 +
lib/Makefile | 2 +-
lib/percpu-refcount.c | 164 +++
mm/mmu_context.c | 3 -
mm/page_io.c | 1 +
mm/shmem.c | 1 +
mm/swap.c | 1 +
security/keys/internal.h | 2 +
security/keys/keyctl.c | 1 +
sound/core/pcm_native.c | 2 +-
74 files changed, 1350 insertions(+), 1396 deletions(-)
create mode 100644 include/linux/percpu-refcount.h
create mode 100644 lib/percpu-refcount.c

--
1.7.12



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