On Mon, Mar 4, 2019 at 10:11 AM Javier González <javier@xxxxxxxxxxx> wrote: > > > On 4 Mar 2019, at 10.05, Hans Holmberg <hans.ml.holmberg@xxxxxxxxxxxxx> wrote: > > > > I strongly disagree with adding code that would mask implantation errors. > > > > If we want more internal checks, we could add an if statement that > > would only be compiled in if CONFIG_NVM_PBLK_DEBUG is enabled. > > > > Not sure who this is for - better not to top post. > > In any case, this is a spec grey zone. I’m ok with cleaning the bits as > they mean nothing for the reset command. If you feel that strongly about > this, you can take if with Igor. Pardon the top-post. It was meant for both you and Igor. > > > > > On Mon, Mar 4, 2019 at 8:48 AM Javier González <javier@xxxxxxxxxxx> wrote: > >>> On 27 Feb 2019, at 18.14, Igor Konopko <igor.j.konopko@xxxxxxxxx> wrote: > >>> > >>> In current pblk implementation of erase command > >>> there is a chance tha sector bits are set to some > >>> random values for erase PPA. This is unexpected > >>> situation, since erase shall be always chunk > >>> aligned. This patch fixes that issue > >>> > >>> Signed-off-by: Igor Konopko <igor.j.konopko@xxxxxxxxx> > >>> --- > >>> drivers/lightnvm/pblk-core.c | 1 + > >>> drivers/lightnvm/pblk-map.c | 2 ++ > >>> 2 files changed, 3 insertions(+) > >>> > >>> diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c > >>> index a98b2255f963..78b1eea4ab67 100644 > >>> --- a/drivers/lightnvm/pblk-core.c > >>> +++ b/drivers/lightnvm/pblk-core.c > >>> @@ -978,6 +978,7 @@ int pblk_line_erase(struct pblk *pblk, struct pblk_line *line) > >>> > >>> ppa = pblk->luns[bit].bppa; /* set ch and lun */ > >>> ppa.a.blk = line->id; > >>> + ppa.a.reserved = 0; > >>> > >>> atomic_dec(&line->left_eblks); > >>> WARN_ON(test_and_set_bit(bit, line->erase_bitmap)); > >>> diff --git a/drivers/lightnvm/pblk-map.c b/drivers/lightnvm/pblk-map.c > >>> index 79df583ea709..aea46b4ec40f 100644 > >>> --- a/drivers/lightnvm/pblk-map.c > >>> +++ b/drivers/lightnvm/pblk-map.c > >>> @@ -161,6 +161,7 @@ int pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd, > >>> > >>> *erase_ppa = ppa_list[i]; > >>> erase_ppa->a.blk = e_line->id; > >>> + erase_ppa->a.reserved = 0; > >>> > >>> spin_unlock(&e_line->lock); > >>> > >>> @@ -202,6 +203,7 @@ int pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd, > >>> atomic_dec(&e_line->left_eblks); > >>> *erase_ppa = pblk->luns[bit].bppa; /* set ch and lun */ > >>> erase_ppa->a.blk = e_line->id; > >>> + erase_ppa->a.reserved = 0; > >>> } > >>> > >>> return 0; > >>> -- > >>> 2.17.1 > >> > >> I’m fine with adding this, but note that there is actually no > >> requirement for the erase to be chunk aligned - the only bits that > >> should be looked at are group, PU and chunk. > >> > >> Reviewed-by: Javier González <javier@xxxxxxxxxxx>
