From a7689938ef4c8678ff78c44d11e4b0b897244714 Mon Sep 17 00:00:00 2001 From: Javier González Date: Fri, 5 Jan 2018 14:16:13 +0100 Subject: lightnvm: pblk: use exact free block counter in RL MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Until now, pblk's rate-limiter has used a heuristic to reserve space for GC I/O given that the over-provision area was fixed. In preparation for allowing to define the over-provision area on target creation, define a dedicated free_block counter in the rate-limiter to track the number of blocks being used for user data. Signed-off-by: Javier González Signed-off-by: Hans Holmberg Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/lightnvm/pblk-sysfs.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/lightnvm/pblk-sysfs.c') diff --git a/drivers/lightnvm/pblk-sysfs.c b/drivers/lightnvm/pblk-sysfs.c index 5cee2ac49c72..620bab853579 100644 --- a/drivers/lightnvm/pblk-sysfs.c +++ b/drivers/lightnvm/pblk-sysfs.c @@ -49,11 +49,12 @@ static ssize_t pblk_sysfs_luns_show(struct pblk *pblk, char *page) static ssize_t pblk_sysfs_rate_limiter(struct pblk *pblk, char *page) { - int free_blocks, total_blocks; + int free_blocks, free_user_blocks, total_blocks; int rb_user_max, rb_user_cnt; int rb_gc_max, rb_gc_cnt, rb_budget, rb_state; - free_blocks = atomic_read(&pblk->rl.free_blocks); + free_blocks = pblk_rl_nr_free_blks(&pblk->rl); + free_user_blocks = pblk_rl_nr_user_free_blks(&pblk->rl); rb_user_max = pblk->rl.rb_user_max; rb_user_cnt = atomic_read(&pblk->rl.rb_user_cnt); rb_gc_max = pblk->rl.rb_gc_max; @@ -64,16 +65,16 @@ static ssize_t pblk_sysfs_rate_limiter(struct pblk *pblk, char *page) total_blocks = pblk->rl.total_blocks; return snprintf(page, PAGE_SIZE, - "u:%u/%u,gc:%u/%u(%u/%u)(stop:<%u,full:>%u,free:%d/%d)-%d\n", + "u:%u/%u,gc:%u/%u(%u)(stop:<%u,full:>%u,free:%d/%d/%d)-%d\n", rb_user_cnt, rb_user_max, rb_gc_cnt, rb_gc_max, rb_state, rb_budget, - pblk->rl.low, pblk->rl.high, free_blocks, + free_user_blocks, total_blocks, READ_ONCE(pblk->rl.rb_user_active)); } -- cgit v1.2.3