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 fast storage devices like NVDIMM. It also introduces a set of percpu statistics count helper functions that facilitate the management of percpu statistics counts. Patch 1 provides a set of simple percpu statistics count helper functions. Patch 2 enables the use of 64-bit counts for 32-bit architectures. Patch 3 eliminates duplicated inode_dio_begin()/inode_dio_end() calls. Patch 4 converts some ext4 statistics counts into percpu counts using the helper functions. Waiman Long (4): percpu_stats: Simple per-cpu statistics count helper functions percpu_stats: Enable 64-bit counts in 32-bit architectures ext4: Pass in DIO_SKIP_DIO_COUNT flag if inode_dio_begin() called ext4: Make cache hits/misses per-cpu counts fs/ext4/extents_status.c | 22 ++++--- fs/ext4/extents_status.h | 11 +++- fs/ext4/indirect.c | 10 +++- fs/ext4/inode.c | 12 +++- include/linux/percpu_stats.h | 64 +++++++++++++++++++++ lib/Makefile | 2 +- lib/percpu_stats.c | 128 ++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 232 insertions(+), 17 deletions(-) create mode 100644 include/linux/percpu_stats.h create mode 100644 lib/percpu_stats.c -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
