This patch introduces pblk, a new target for LightNVM implementing a full host-based FTL. Details on the commit message. Changes since v1: * Rebase on top of Matias' for-4.12/core * Move from per-LUN block allocation to a line model. This means that a whole lines across all LUNs is allocated at a time. Data is still stripped in a round-robin fashion at a page granurality. * Implement new disk format scheme, where metadata is stored per line instead of per LUN. This allows for space optimizations. * Improvements on GC workqueue management and victim selection. * Implement sysfs interface to query pblk's operation and statistics. * Implement a user - GC I/O rate-limiter * Various bug fixes Javier González (1): lightnvm: physical block device (pblk) target Documentation/lightnvm/pblk.txt | 21 + drivers/lightnvm/Kconfig | 18 + drivers/lightnvm/Makefile | 5 + drivers/lightnvm/pblk-cache.c | 119 +++ drivers/lightnvm/pblk-core.c | 1539 ++++++++++++++++++++++++++++++++++++++ drivers/lightnvm/pblk-gc.c | 401 ++++++++++ drivers/lightnvm/pblk-init.c | 937 +++++++++++++++++++++++ drivers/lightnvm/pblk-map.c | 146 ++++ drivers/lightnvm/pblk-rb.c | 857 +++++++++++++++++++++ drivers/lightnvm/pblk-read.c | 512 +++++++++++++ drivers/lightnvm/pblk-recovery.c | 142 ++++ drivers/lightnvm/pblk-rl.c | 219 ++++++ drivers/lightnvm/pblk-sysfs.c | 947 +++++++++++++++++++++++ drivers/lightnvm/pblk-write.c | 407 ++++++++++ drivers/lightnvm/pblk.h | 958 ++++++++++++++++++++++++ 15 files changed, 7228 insertions(+) create mode 100644 Documentation/lightnvm/pblk.txt create mode 100644 drivers/lightnvm/pblk-cache.c create mode 100644 drivers/lightnvm/pblk-core.c create mode 100644 drivers/lightnvm/pblk-gc.c create mode 100644 drivers/lightnvm/pblk-init.c create mode 100644 drivers/lightnvm/pblk-map.c create mode 100644 drivers/lightnvm/pblk-rb.c create mode 100644 drivers/lightnvm/pblk-read.c create mode 100644 drivers/lightnvm/pblk-recovery.c create mode 100644 drivers/lightnvm/pblk-rl.c create mode 100644 drivers/lightnvm/pblk-sysfs.c create mode 100644 drivers/lightnvm/pblk-write.c create mode 100644 drivers/lightnvm/pblk.h -- 2.7.4
