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Subject[PATCH 0/3] Rework write error handling in pblk
Date
From: Hans Holmberg <hans.holmberg@cnexlabs.com>

This patch series fixes the(currently incomplete) write error handling
in pblk by:

* queuing and re-submitting failed writes in the write buffer
* evacuating valid data data in lines with write failures, so the
chunk(s) with write failures can be reset to a known state by the fw

Lines with failures in smeta are put back on the free list.
Failed chunks will be reset on the next use.

If a write failes in emeta, the lba list is cached so the line can be
garbage collected without scanning the out-of-band area.

Hans Holmberg (3):
lightnvm: pblk: rework write error recovery path
lightnvm: pblk: garbage collect lines with failed writes
lightnvm: pblk: fix smeta write error path

drivers/lightnvm/pblk-core.c | 50 +++++++-
drivers/lightnvm/pblk-gc.c | 79 ++++++++-----
drivers/lightnvm/pblk-init.c | 41 +++++--
drivers/lightnvm/pblk-recovery.c | 91 ---------------
drivers/lightnvm/pblk-rl.c | 29 ++++-
drivers/lightnvm/pblk-sysfs.c | 15 ++-
drivers/lightnvm/pblk-write.c | 243 ++++++++++++++++++++++++++++-----------
drivers/lightnvm/pblk.h | 33 ++++--
8 files changed, 362 insertions(+), 219 deletions(-)

--
2.7.4

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