[dm-devel] [PATCH v3 0/5] Optimize writecache when using pmem as cache

[Huaisheng Ye]

From: Huaisheng Ye <yehs1 at lenovo.com>

This patch set could be used for dm-writecache when use persistent
memory as cache data device.

Patch 1 and 2 go towards removing unused parameter and codes which
actually doesn't really work.

Patch 3 and 4 are targeted at solving problem fn ctr failed to work
due to invalid magic or version, which is caused by the super block
of pmem has messy data stored.

Patch 5 is used for getting the status of seq_count.

Changes Since v2: 
        - seq_count is important for flush operations, output it within status
          for debugging and analyzing code behavior.
	[1]: https://lkml.org/lkml/2019/1/3/43
        [2]: https://lkml.org/lkml/2019/1/9/6

Huaisheng Ye (5):
  dm-writecache: remove unused size to writecache_flush_region
  dm-writecache: get rid of memory_data flush to writecache_flush_entry
  dm-writecache: expand pmem_reinit for struct dm_writecache
  Documentation/device-mapper: add optional parameter reinit
  dm-writecache: output seq_count within status

 Documentation/device-mapper/writecache.txt |  4 ++++
 drivers/md/dm-writecache.c                 | 23 +++++++++++++----------
 2 files changed, 17 insertions(+), 10 deletions(-)

-- 
1.8.3.1