From 37ce33d5756f4ba8bdd45371a1918ceeeba5b158 Mon Sep 17 00:00:00 2001 From: Hans Holmberg Date: Fri, 13 Oct 2017 14:46:36 +0200 Subject: lightnvm: pblk: free full lines during recovery MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When rebuilding the L2P table, any full lines (lines without any valid sectors) will be identified. If these lines are not freed, we risk not being able to allocate the first data line. This patch refactors the part of GC that frees empty lines into a separate function and adds a call to this after the L2P table has been rebuilt. Signed-off-by: Hans Holmberg Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/lightnvm/pblk-gc.c | 32 ++++++++++++++++++++------------ 1 file changed, 20 insertions(+), 12 deletions(-) (limited to 'drivers/lightnvm/pblk-gc.c') diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c index 81efac18ff57..374089fe4326 100644 --- a/drivers/lightnvm/pblk-gc.c +++ b/drivers/lightnvm/pblk-gc.c @@ -330,26 +330,16 @@ static bool pblk_gc_should_run(struct pblk_gc *gc, struct pblk_rl *rl) return ((gc->gc_active) && (nr_blocks_need > nr_blocks_free)); } -/* - * Lines with no valid sectors will be returned to the free list immediately. If - * GC is activated - either because the free block count is under the determined - * threshold, or because it is being forced from user space - only lines with a - * high count of invalid sectors will be recycled. - */ -static void pblk_gc_run(struct pblk *pblk) +void pblk_gc_free_full_lines(struct pblk *pblk) { struct pblk_line_mgmt *l_mg = &pblk->l_mg; - struct pblk_gc *gc = &pblk->gc; struct pblk_line *line; - struct list_head *group_list; - bool run_gc; - int inflight_gc, gc_group = 0, prev_group = 0; do { spin_lock(&l_mg->gc_lock); if (list_empty(&l_mg->gc_full_list)) { spin_unlock(&l_mg->gc_lock); - break; + return; } line = list_first_entry(&l_mg->gc_full_list, @@ -365,6 +355,24 @@ static void pblk_gc_run(struct pblk *pblk) kref_put(&line->ref, pblk_line_put); } while (1); +} + +/* + * Lines with no valid sectors will be returned to the free list immediately. If + * GC is activated - either because the free block count is under the determined + * threshold, or because it is being forced from user space - only lines with a + * high count of invalid sectors will be recycled. + */ +static void pblk_gc_run(struct pblk *pblk) +{ + struct pblk_line_mgmt *l_mg = &pblk->l_mg; + struct pblk_gc *gc = &pblk->gc; + struct pblk_line *line; + struct list_head *group_list; + bool run_gc; + int inflight_gc, gc_group = 0, prev_group = 0; + + pblk_gc_free_full_lines(pblk); run_gc = pblk_gc_should_run(&pblk->gc, &pblk->rl); if (!run_gc || (atomic_read(&gc->inflight_gc) >= PBLK_GC_L_QD)) -- cgit v1.2.3