lightnvm: pblk: remove target using async. I/Os
When removing a pblk instance, pad the current line using asynchronous
I/O. This reduces the removal time from ~1 minute in the worst case to a
couple of seconds.
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index cdad2c9..bf5b73f 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -111,6 +111,13 @@ struct pblk_g_ctx {
void *private;
};
+/* Pad context */
+struct pblk_pad_rq {
+ struct pblk *pblk;
+ struct completion wait;
+ struct kref ref;
+};
+
/* Recovery context */
struct pblk_rec_ctx {
struct pblk *pblk;
@@ -674,6 +681,7 @@ void pblk_rb_sync_end(struct pblk_rb *rb, unsigned long *flags);
unsigned int pblk_rb_sync_point_count(struct pblk_rb *rb);
unsigned int pblk_rb_read_count(struct pblk_rb *rb);
+unsigned int pblk_rb_sync_count(struct pblk_rb *rb);
unsigned int pblk_rb_wrap_pos(struct pblk_rb *rb, unsigned int pos);
int pblk_rb_tear_down_check(struct pblk_rb *rb);