On 04/24/2018 07:45 AM, Hans Holmberg wrote:
From: Hans Holmberg <hans.holmb...@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. Changes in V2: - Added the recov_writes counter increase to the new path - Moved lba list emeta reading during gc to a separate function - Allocating the saved lba list with pblk_malloc instead of kmalloc - Fixed formatting issues - Removed dead code 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 | 52 +++++++- drivers/lightnvm/pblk-gc.c | 102 +++++++++------ drivers/lightnvm/pblk-init.c | 47 ++++--- drivers/lightnvm/pblk-rb.c | 39 ------ drivers/lightnvm/pblk-recovery.c | 91 ------------- drivers/lightnvm/pblk-rl.c | 29 ++++- drivers/lightnvm/pblk-sysfs.c | 15 ++- drivers/lightnvm/pblk-write.c | 269 ++++++++++++++++++++++++++------------- drivers/lightnvm/pblk.h | 36 ++++-- 9 files changed, 384 insertions(+), 296 deletions(-)
Applied for 4.18.
