Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1678277 > unrolled thread

[PATCH] libnvdimm, btt: fix btt_rw_page not returning errors

Back to article view | Back to linux.kernel

Contents

  [PATCH] libnvdimm, btt: fix btt_rw_page not returning errors Vishal Verma <vishal.l.verma@intel.com> - 2017-06-30 01:10 +0200
    Re: [PATCH] libnvdimm, btt: fix btt_rw_page not returning errors Dan Williams <dan.j.williams@intel.com> - 2017-06-30 03:40 +0200

#1678277 — [PATCH] libnvdimm, btt: fix btt_rw_page not returning errors

btt_rw_page was not propagating errors frm btt_do_bvec, resulting in any
IO errors via the rw_page path going unnoticed. the pmem driver recently
fixed this in e10624f pmem: fail io-requests to known bad blocks
but same problem in BTT went neglected.

Fixes: 5212e11 nd_btt: atomic sector updates
Cc: <stable@vger.kernel.org>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
---
 drivers/nvdimm/btt.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 7ca11df..4e56e72 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1248,10 +1248,13 @@ static int btt_rw_page(struct block_device *bdev, sector_t sector,
 		struct page *page, bool is_write)
 {
 	struct btt *btt = bdev->bd_disk->private_data;
+	int rc;
 
-	btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, is_write, sector);
-	page_endio(page, is_write, 0);
-	return 0;
+	rc = btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, is_write, sector);
+	if (rc == 0)
+		page_endio(page, is_write, 0);
+
+	return rc;
 }
 
 
-- 
2.9.3

[toc] | [next] | [standalone]

#1678381

On Thu, Jun 29, 2017 at 3:59 PM, Vishal Verma <vishal.l.verma@intel.com> wrote:
> btt_rw_page was not propagating errors frm btt_do_bvec, resulting in any
> IO errors via the rw_page path going unnoticed. the pmem driver recently
> fixed this in e10624f pmem: fail io-requests to known bad blocks
> but same problem in BTT went neglected.
>
> Fixes: 5212e11 nd_btt: atomic sector updates
> Cc: <stable@vger.kernel.org>
> Cc: Toshi Kani <toshi.kani@hpe.com>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Cc: Jeff Moyer <jmoyer@redhat.com>
> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
> ---
>  drivers/nvdimm/btt.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
> index 7ca11df..4e56e72 100644
> --- a/drivers/nvdimm/btt.c
> +++ b/drivers/nvdimm/btt.c
> @@ -1248,10 +1248,13 @@ static int btt_rw_page(struct block_device *bdev, sector_t sector,
>                 struct page *page, bool is_write)
>  {
>         struct btt *btt = bdev->bd_disk->private_data;
> +       int rc;
>
> -       btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, is_write, sector);
> -       page_endio(page, is_write, 0);
> -       return 0;
> +       rc = btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, is_write, sector);
> +       if (rc == 0)
> +               page_endio(page, is_write, 0);
> +
> +       return rc;
>  }

Looks obviously correct, applied.

[toc] | [prev] | [standalone]

Back to top | Article view | linux.kernel

csiph-web