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authorIgor Konopko <igor.j.konopko@intel.com>2019-05-04 20:37:50 +0200
committerJens Axboe <axboe@kernel.dk>2019-05-06 10:19:17 -0600
commitd378561b8ec7b46402de2b649cd44ee835d2e579 (patch)
treefc07fb11559b7bbac4d9585fd86bc8de231e6950 /drivers/lightnvm
parent605bcef7f7d733aa732b6cc06201bd95a4288f72 (diff)
downloadlwn-d378561b8ec7b46402de2b649cd44ee835d2e579.tar.gz
lwn-d378561b8ec7b46402de2b649cd44ee835d2e579.zip
lightnvm: pblk: gracefully handle GC vmalloc fail
Currently when we fail on rq data allocation in gc, it skips moving active data and moves line straigt to its free state. Losing user data in the process. Move the data allocation to an earlier phase of GC, where we can still fail gracefully by moving line back to the closed state. Signed-off-by: Igor Konopko <igor.j.konopko@intel.com> Reviewed-by: Javier González <javier@javigon.com> Reviewed-by: Hans Holmberg <hans.holmberg@cnexlabs.com> Signed-off-by: Matias Bjørling <mb@lightnvm.io> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm')
-rw-r--r--drivers/lightnvm/pblk-gc.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c
index 65692e6d76e6..ea9f392a395e 100644
--- a/drivers/lightnvm/pblk-gc.c
+++ b/drivers/lightnvm/pblk-gc.c
@@ -84,8 +84,6 @@ static void pblk_gc_line_ws(struct work_struct *work)
struct pblk_line_ws *gc_rq_ws = container_of(work,
struct pblk_line_ws, ws);
struct pblk *pblk = gc_rq_ws->pblk;
- struct nvm_tgt_dev *dev = pblk->dev;
- struct nvm_geo *geo = &dev->geo;
struct pblk_gc *gc = &pblk->gc;
struct pblk_line *line = gc_rq_ws->line;
struct pblk_gc_rq *gc_rq = gc_rq_ws->priv;
@@ -93,13 +91,6 @@ static void pblk_gc_line_ws(struct work_struct *work)
up(&gc->gc_sem);
- gc_rq->data = vmalloc(array_size(gc_rq->nr_secs, geo->csecs));
- if (!gc_rq->data) {
- pblk_err(pblk, "could not GC line:%d (%d/%d)\n",
- line->id, *line->vsc, gc_rq->nr_secs);
- goto out;
- }
-
/* Read from GC victim block */
ret = pblk_submit_read_gc(pblk, gc_rq);
if (ret) {
@@ -189,6 +180,8 @@ static void pblk_gc_line_prepare_ws(struct work_struct *work)
struct pblk_line *line = line_ws->line;
struct pblk_line_mgmt *l_mg = &pblk->l_mg;
struct pblk_line_meta *lm = &pblk->lm;
+ struct nvm_tgt_dev *dev = pblk->dev;
+ struct nvm_geo *geo = &dev->geo;
struct pblk_gc *gc = &pblk->gc;
struct pblk_line_ws *gc_rq_ws;
struct pblk_gc_rq *gc_rq;
@@ -247,9 +240,13 @@ next_rq:
gc_rq->nr_secs = nr_secs;
gc_rq->line = line;
+ gc_rq->data = vmalloc(array_size(gc_rq->nr_secs, geo->csecs));
+ if (!gc_rq->data)
+ goto fail_free_gc_rq;
+
gc_rq_ws = kmalloc(sizeof(struct pblk_line_ws), GFP_KERNEL);
if (!gc_rq_ws)
- goto fail_free_gc_rq;
+ goto fail_free_gc_data;
gc_rq_ws->pblk = pblk;
gc_rq_ws->line = line;
@@ -281,6 +278,8 @@ out:
return;
+fail_free_gc_data:
+ vfree(gc_rq->data);
fail_free_gc_rq:
kfree(gc_rq);
fail_free_lba_list: