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Subject[PATCH 0/3] ext4: Improve parallel I/O performance on NVDIMM
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This patchset aims to improve parallel I/O performance of the ext4
filesystem on fast storage devices like NVDIMM.

Patch 1 eliminates duplicated inode_dio_begin()/inode_dio_end() calls.

Patch 2 provides a set of simple percpu statistics count helper functions.

Patch 3 converts some ext4 statistics counts into percpu counts using
the helper functions.

Waiman Long (3):
ext4: Pass in DIO_SKIP_DIO_COUNT flag if inode_dio_begin() called
percpu_stats: Simple per-cpu statistics count helper functions
ext4: Make cache hits/misses per-cpu counts

fs/ext4/extents_status.c | 20 +++++---
fs/ext4/extents_status.h | 11 ++++-
fs/ext4/indirect.c | 10 +++-
fs/ext4/inode.c | 12 ++++-
include/linux/percpu_stats.h | 103 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 141 insertions(+), 15 deletions(-)
create mode 100644 include/linux/percpu_stats.h

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