* [PATCH] lightnvm: pblk: remove size and out of bounds read check
@ 2018-08-20 12:59 Matias Bjørling
2018-08-20 13:31 ` Javier Gonzalez
0 siblings, 1 reply; 2+ messages in thread
From: Matias Bjørling @ 2018-08-20 12:59 UTC (permalink / raw)
To: igor.j.konopko, marcin.dziegielewski, javier, hans.holmberg,
hlitz, youngtack.jin
Cc: linux-block, linux-kernel, Matias Bjørling
The I/O size and capacity check are already done by the block layer.
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
---
drivers/lightnvm/pblk-read.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
index f275c7e5abe4..d0fbd50ecc90 100644
--- a/drivers/lightnvm/pblk-read.c
+++ b/drivers/lightnvm/pblk-read.c
@@ -452,13 +452,6 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio)
DECLARE_BITMAP(read_bitmap, NVM_MAX_VLBA);
int ret = NVM_IO_ERR;
- /* logic error: lba out-of-bounds. Ignore read request */
- if (blba >= pblk->rl.nr_secs || nr_secs > NVM_MAX_VLBA) {
- WARN(1, "pblk: read lba out of bounds (lba:%llu, nr:%d)\n",
- (unsigned long long)blba, nr_secs);
- return NVM_IO_ERR;
- }
-
generic_start_io_acct(q, READ, bio_sectors(bio), &pblk->disk->part0);
bitmap_zero(read_bitmap, nr_secs);
--
2.11.0
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] lightnvm: pblk: remove size and out of bounds read check
2018-08-20 12:59 [PATCH] lightnvm: pblk: remove size and out of bounds read check Matias Bjørling
@ 2018-08-20 13:31 ` Javier Gonzalez
0 siblings, 0 replies; 2+ messages in thread
From: Javier Gonzalez @ 2018-08-20 13:31 UTC (permalink / raw)
To: Matias Bjørling
Cc: Konopko, Igor J, marcin.dziegielewski, Hans Holmberg,
Heiner Litz, Young Tack Tack Jin, linux-block, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1131 bytes --]
> On 20 Aug 2018, at 14.59, Matias Bjørling <mb@lightnvm.io> wrote:
>
> The I/O size and capacity check are already done by the block layer.
>
> Signed-off-by: Matias Bjørling <mb@lightnvm.io>
> ---
> drivers/lightnvm/pblk-read.c | 7 -------
> 1 file changed, 7 deletions(-)
>
> diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
> index f275c7e5abe4..d0fbd50ecc90 100644
> --- a/drivers/lightnvm/pblk-read.c
> +++ b/drivers/lightnvm/pblk-read.c
> @@ -452,13 +452,6 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio)
> DECLARE_BITMAP(read_bitmap, NVM_MAX_VLBA);
> int ret = NVM_IO_ERR;
>
> - /* logic error: lba out-of-bounds. Ignore read request */
> - if (blba >= pblk->rl.nr_secs || nr_secs > NVM_MAX_VLBA) {
> - WARN(1, "pblk: read lba out of bounds (lba:%llu, nr:%d)\n",
> - (unsigned long long)blba, nr_secs);
> - return NVM_IO_ERR;
> - }
> -
> generic_start_io_acct(q, READ, bio_sectors(bio), &pblk->disk->part0);
>
> bitmap_zero(read_bitmap, nr_secs);
> --
> 2.11.0
Looks good to me.
Reviewed-by: Javier González <javier@cnexlabs.com>
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