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Date: Fri, 15 Apr 2016 15:03:10 -0400 From: Waiman Long <Waiman.Long@....com> To: "Theodore Ts'o" <tytso@....edu>, Andreas Dilger <adilger.kernel@...ger.ca> Cc: linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>, Christoph Lameter <cl@...ux.com>, Dave Chinner <david@...morbit.com>, Scott J Norton <scott.norton@....com>, Douglas Hatch <doug.hatch@....com>, Toshimitsu Kani <toshi.kani@....com>, Waiman Long <Waiman.Long@....com> Subject: [PATCH v4 0/2] ext4: Improve parallel I/O performance on NVDIMM v3->v4: - For patch 1, add the DIO_SKIP_DIO_COUNT flag to dax_do_io() calls only to address issue raised by Dave Chinner. v2->v3: - Remove the percpu_stats helper functions and use percpu_counters instead. v1->v2: - Remove percpu_stats_reset() which is not really needed in this patchset. - Move some percpu_stats* functions to the newly created lib/percpu_stats.c. - Add a new patch to support 64-bit statistics counts in 32-bit architectures. - Rearrange the patches by moving the percpu_stats patches to the front followed by the ext4 patches. This patchset aims to improve parallel I/O performance of the ext4 filesystem on DAX. Patch 1 eliminates duplicated inode_dio_begin()/inode_dio_end() calls in dax_do_io(). Patch 2 converts some ext4 statistics counts into percpu counts using the helper functions. Waiman Long (2): ext4: Add DIO_SKIP_DIO_COUNT flag to dax_do_io() ext4: Make cache hits/misses per-cpu counts fs/ext4/extents_status.c | 38 +++++++++++++++++++++++++++++--------- fs/ext4/extents_status.h | 4 ++-- fs/ext4/indirect.c | 9 ++++++++- fs/ext4/inode.c | 11 ++++++++--- 4 files changed, 47 insertions(+), 15 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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