> On 4 Mar 2019, at 10.05, Hans Holmberg <[email protected]> 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. > > On Mon, Mar 4, 2019 at 8:48 AM Javier González <[email protected]> wrote: >>> On 27 Feb 2019, at 18.14, Igor Konopko <[email protected]> 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 <[email protected]> >>> --- >>> 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 <[email protected]>
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