Mike, I folded all your patches from your dm-zoned branch together with further rewrite to finish the data structure separation that you started. Folded in this version are also several bug fixes and code cleanup. In more details, the changes from the previous version are as follow: * Completed the dmz_target structure split into dmz_metadata, dmz_reclaim and a smaller dmz_target structure. These structures are respectively defined in dm-zoned-metadata.c, dm-zoned-reclaim.c and dm-zoned-target.c. In the include file dm-zoned.h remains only the dm_zone data structure definition and the newly defined dmz_dev data structure to hold static device information shared between all files (bdev handle, device name, number of zones, zone size, etc) * Various code shuffle and cleanup, function rename and message fixes. Most of the code changes are to avoid the need for back-pointers and cross access to the data structure members. There was no functionality loss due to these changes. The code is in fact now a lot cleaner in many places. * Fixed a deadlock happening when a chunk work is waiting for a zone to be reclaimed with the flush work concurrently executing (all three of these running together could deadlock on the metadata semaphore). I ran several long run tests applying various workloads with XFS running on top of a dm-zoned device. No problems were detected. I will keep testing to make sure that stability was not affected by all the changes. Please review and let me know of any further change or correction you think is needed. Thank you. Best regards. Damien Le Moal (1): dm-zoned: Drive-managed zoned block device target Documentation/device-mapper/dm-zoned.txt | 144 ++ drivers/md/Kconfig | 17 + drivers/md/Makefile | 2 + drivers/md/dm-zoned-metadata.c | 2514 ++++++++++++++++++++++++++++++ drivers/md/dm-zoned-reclaim.c | 570 +++++++ drivers/md/dm-zoned-target.c | 970 ++++++++++++ drivers/md/dm-zoned.h | 228 +++ 7 files changed, 4445 insertions(+) create mode 100644 Documentation/device-mapper/dm-zoned.txt create mode 100644 drivers/md/dm-zoned-metadata.c create mode 100644 drivers/md/dm-zoned-reclaim.c create mode 100644 drivers/md/dm-zoned-target.c create mode 100644 drivers/md/dm-zoned.h -- 2.9.4 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
