diff options
| author | Javier González <javier@javigon.com> | 2018-06-01 15:04:24 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-06-01 07:43:53 -0600 |
| commit | a7c9e9109ca1142f33b882615cc5fa048e07f3ea (patch) | |
| tree | d82d1ed53aa6053714b27c2fcd491fc9c32d0c2f /drivers/lightnvm/pblk-core.c | |
| parent | 6f9c9607d445a05267eb4830e5375535f5a547a2 (diff) | |
lightnvm: pass flag on graceful teardown to targets
If the namespace is unregistered before the LightNVM target is removed
(e.g., on hot unplug) it is too late for the target to store any metadata
on the device - any attempt to write to the device will fail. In this
case, pass on a "gracefull teardown" flag to the target to let it know
when this happens.
In the case of pblk, we pad the open line (close all open chunks) to
improve data retention. In the event of an ungraceful shutdown, avoid
this part and just clean up.
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm/pblk-core.c')
| -rw-r--r-- | drivers/lightnvm/pblk-core.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index 26f3c14ad799..6e6a65b278b9 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -1461,7 +1461,7 @@ static void pblk_line_close_meta_sync(struct pblk *pblk) flush_workqueue(pblk->close_wq); } -void pblk_pipeline_stop(struct pblk *pblk) +void __pblk_pipeline_flush(struct pblk *pblk) { struct pblk_line_mgmt *l_mg = &pblk->l_mg; int ret; @@ -1486,6 +1486,11 @@ void pblk_pipeline_stop(struct pblk *pblk) flush_workqueue(pblk->bb_wq); pblk_line_close_meta_sync(pblk); +} + +void __pblk_pipeline_stop(struct pblk *pblk) +{ + struct pblk_line_mgmt *l_mg = &pblk->l_mg; spin_lock(&l_mg->free_lock); pblk->state = PBLK_STATE_STOPPED; @@ -1494,6 +1499,12 @@ void pblk_pipeline_stop(struct pblk *pblk) spin_unlock(&l_mg->free_lock); } +void pblk_pipeline_stop(struct pblk *pblk) +{ + __pblk_pipeline_flush(pblk); + __pblk_pipeline_stop(pblk); +} + struct pblk_line *pblk_line_replace_data(struct pblk *pblk) { struct pblk_line_mgmt *l_mg = &pblk->l_mg; |