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| author | Igor Konopko <igor.j.konopko@intel.com> | 2019-05-04 20:38:05 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-05-06 18:19:18 +0200 |
| commit | f2e024570ef1a3d443875f6063321ee2e503ceb1 (patch) | |
| tree | 38d0d4514b953abf1af92e4cb92acf325b0039e8 /drivers/lightnvm/pblk.h | |
| parent | lightnvm: pblk: remove internal IO timeout (diff) | |
| download | linux-f2e024570ef1a3d443875f6063321ee2e503ceb1.tar.xz linux-f2e024570ef1a3d443875f6063321ee2e503ceb1.zip | |
lightnvm: pblk: GC error handling
Currently when there is an IO error (or similar) on GC read path, pblk
still move the line, which was currently under GC process to free state.
Such a behaviour can lead to silent data mismatch issue.
With this patch, the line which was under GC process on which some IO
errors occurred, will be putted back to closed state (instead of free
state as it was without this patch) and the L2P mapping for such a
failed sectors will not be updated.
Then in case of any user IOs to such a failed sectors, pblk would be
able to return at least real IO error instead of stale data as it is
right now.
Signed-off-by: Igor Konopko <igor.j.konopko@intel.com>
Reviewed-by: Javier González <javier@javigon.com>
Reviewed-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm/pblk.h')
| -rw-r--r-- | drivers/lightnvm/pblk.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h index 90c703d3f84c..e304754aaa3c 100644 --- a/drivers/lightnvm/pblk.h +++ b/drivers/lightnvm/pblk.h @@ -437,6 +437,7 @@ struct pblk_smeta { struct pblk_w_err_gc { int has_write_err; + int has_gc_err; __le64 *lba_list; }; @@ -917,6 +918,7 @@ void pblk_gc_free_full_lines(struct pblk *pblk); void pblk_gc_sysfs_state_show(struct pblk *pblk, int *gc_enabled, int *gc_active); int pblk_gc_sysfs_force(struct pblk *pblk, int force); +void pblk_put_line_back(struct pblk *pblk, struct pblk_line *line); /* * pblk rate limiter |