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Commit 3627896a authored by Javier González's avatar Javier González Committed by Jens Axboe
Browse files

lightnvm: pblk: use constant for GC max inflight 



Use a constant to set the maximum number of inflight GC requests
allowed.

Signed-off-by: default avatarJavier González <javier@cnexlabs.com>
Signed-off-by: default avatarMatias Bjørling <m@bjorling.me>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 2942f50f

drivers/lightnvm/pblk-gc.c

+2 −2
Original line number Diff line number Diff line
@@ -93,7 +93,7 @@ static int pblk_gc_move_valid_secs(struct pblk *pblk, struct pblk_gc_rq *gc_rq) 


retry:

	spin_lock(&gc->w_lock);

	if (gc->w_entries >= PBLK_GC_W_QD) {

	if (gc->w_entries >= PBLK_GC_RQ_QD) {

		spin_unlock(&gc->w_lock);

		pblk_gc_writer_kick(&pblk->gc);

		usleep_range(128, 256);
@@ -602,7 +602,7 @@ int pblk_gc_init(struct pblk *pblk) 
	spin_lock_init(&gc->w_lock);

	spin_lock_init(&gc->r_lock);



	sema_init(&gc->gc_sem, 128);

	sema_init(&gc->gc_sem, PBLK_GC_RQ_QD);



	INIT_LIST_HEAD(&gc->w_list);

	INIT_LIST_HEAD(&gc->r_list);

drivers/lightnvm/pblk.h

+1 −1
Original line number Diff line number Diff line
@@ -816,7 +816,7 @@ int pblk_recov_setup_rq(struct pblk *pblk, struct pblk_c_ctx *c_ctx, 
 * pblk gc

 */

#define PBLK_GC_MAX_READERS 8	/* Max number of outstanding GC reader jobs */

#define PBLK_GC_W_QD 128	/* Queue depth for inflight GC write I/Os */

#define PBLK_GC_RQ_QD 128	/* Queue depth for inflight GC requests */

#define PBLK_GC_L_QD 4		/* Queue depth for inflight GC lines */

#define PBLK_GC_RSV_LINE 1	/* Reserved lines for GC */