diff options
| author | Javier González <javier@javigon.com> | 2018-06-01 15:04:24 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-06-01 15:43:53 +0200 |
| commit | a7c9e9109ca1142f33b882615cc5fa048e07f3ea (patch) | |
| tree | d82d1ed53aa6053714b27c2fcd491fc9c32d0c2f /drivers/lightnvm/pblk-gc.c | |
| parent | lightnvm: pblk: check for chunk size before allocating it (diff) | |
| download | linux-a7c9e9109ca1142f33b882615cc5fa048e07f3ea.tar.xz linux-a7c9e9109ca1142f33b882615cc5fa048e07f3ea.zip | |
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-gc.c')
| -rw-r--r-- | drivers/lightnvm/pblk-gc.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c index 6851a5c67189..b0cc277bf972 100644 --- a/drivers/lightnvm/pblk-gc.c +++ b/drivers/lightnvm/pblk-gc.c @@ -649,7 +649,7 @@ fail_free_main_kthread: return ret; } -void pblk_gc_exit(struct pblk *pblk) +void pblk_gc_exit(struct pblk *pblk, bool graceful) { struct pblk_gc *gc = &pblk->gc; @@ -663,10 +663,12 @@ void pblk_gc_exit(struct pblk *pblk) if (gc->gc_reader_ts) kthread_stop(gc->gc_reader_ts); - flush_workqueue(gc->gc_reader_wq); - destroy_workqueue(gc->gc_reader_wq); + if (graceful) { + flush_workqueue(gc->gc_reader_wq); + flush_workqueue(gc->gc_line_reader_wq); + } - flush_workqueue(gc->gc_line_reader_wq); + destroy_workqueue(gc->gc_reader_wq); destroy_workqueue(gc->gc_line_reader_wq); if (gc->gc_writer_ts) |