Re: [PATCH v2 11/16] lightnvm: pblk: fix update line wp in OOB recovery

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 3/22/19 3:48 PM, Igor Konopko wrote:
In case of OOB recovery, we can hit the scenario when all the data in
line were written and some part of emeta was written too. In such
a case pblk_update_line_wp() function will call pblk_alloc_page()
function which will case to set left_msecs to value below zero
(since this field does not track emeta region) and thus will lead to
multiple kernel warnings. This patch fixes that issue.

Signed-off-by: Igor Konopko <igor.j.konopko@xxxxxxxxx>
Reviewed-by: Javier González <javier@xxxxxxxxxxx>
---
  drivers/lightnvm/pblk-recovery.c | 16 +++++++++++++++-
  1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index 65916f0..4e8f382 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -93,10 +93,24 @@ static int pblk_recov_l2p_from_emeta(struct pblk *pblk, struct pblk_line *line)
  static void pblk_update_line_wp(struct pblk *pblk, struct pblk_line *line,
  				u64 written_secs)
  {
+	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
  	int i;
for (i = 0; i < written_secs; i += pblk->min_write_pgs)
-		pblk_alloc_page(pblk, line, pblk->min_write_pgs);
+		__pblk_alloc_page(pblk, line, pblk->min_write_pgs);
+
+	spin_lock(&l_mg->free_lock);
+	if (written_secs > line->left_msecs) {
+		/*
+		 * We have all data sectors written
+		 * and some emeta sectors written too.
+		 */
+		line->left_msecs = 0;
+	} else {
+		/* We have only some data sectors written. */
+		line->left_msecs -= written_secs;
+	}
+	spin_unlock(&l_mg->free_lock);
  }
static u64 pblk_sec_in_open_line(struct pblk *pblk, struct pblk_line *line)


Thanks, applied.



[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux