diff options
Diffstat (limited to 'drivers/lightnvm/pblk-rb.c')
| -rw-r--r-- | drivers/lightnvm/pblk-rb.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/lightnvm/pblk-rb.c b/drivers/lightnvm/pblk-rb.c index f653faa6a9ed..b1f4b51783f4 100644 --- a/drivers/lightnvm/pblk-rb.c +++ b/drivers/lightnvm/pblk-rb.c @@ -56,7 +56,8 @@ static unsigned int pblk_rb_calculate_size(unsigned int nr_entries) * allocated and their size must be a power of two * (Documentation/core-api/circular-buffers.rst) */ -int pblk_rb_init(struct pblk_rb *rb, unsigned int size, unsigned int seg_size) +int pblk_rb_init(struct pblk_rb *rb, unsigned int size, unsigned int threshold, + unsigned int seg_size) { struct pblk *pblk = container_of(rb, struct pblk, rwb); struct pblk_rb_entry *entries; @@ -79,6 +80,7 @@ int pblk_rb_init(struct pblk_rb *rb, unsigned int size, unsigned int seg_size) rb->seg_size = (1 << power_seg_sz); rb->nr_entries = (1 << power_size); rb->mem = rb->subm = rb->sync = rb->l2p_update = 0; + rb->back_thres = threshold; rb->flush_point = EMPTY_ENTRY; spin_lock_init(&rb->w_lock); @@ -404,11 +406,14 @@ static int __pblk_rb_may_write(struct pblk_rb *rb, unsigned int nr_entries, { unsigned int mem; unsigned int sync; + unsigned int threshold; sync = READ_ONCE(rb->sync); mem = READ_ONCE(rb->mem); - if (pblk_rb_ring_space(rb, mem, sync, rb->nr_entries) < nr_entries) + threshold = nr_entries + rb->back_thres; + + if (pblk_rb_ring_space(rb, mem, sync, rb->nr_entries) < threshold) return 0; if (pblk_rb_update_l2p(rb, nr_entries, mem, sync)) |