linux-kernel - Re: [PATCH] dm writecache: correct uncommitted

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LRH.2.02.2006130839480.27500@file01.intranet.prod.int.rdu2.redhat.com>
Date:   Sat, 13 Jun 2020 08:40:29 -0400 (EDT)
From:   Mikulas Patocka <mpatocka@...hat.com>
To:     Huaisheng Ye <yehs2007@...o.com>
cc:     snitzer@...hat.com, agk@...hat.com, dm-devel@...hat.com,
        linux-kernel@...r.kernel.org, Huaisheng Ye <yehs1@...ovo.com>
Subject: Re: [PATCH] dm writecache: correct uncommitted_block when discarding
 uncommitted entry



On Fri, 12 Jun 2020, Huaisheng Ye wrote:

> From: Huaisheng Ye <yehs1@...ovo.com>
> 
> When uncommitted entry has been discarded, correct wc->uncommitted_block
> for getting the exact number.
> 
> Signed-off-by: Huaisheng Ye <yehs1@...ovo.com>

Acked-by: Mikulas Patocka <mpatocka@...hat.com>

Also, add:
Cc: stable@...r.kernel.org

> ---
>  drivers/md/dm-writecache.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
> index 4367cc7..64b4527 100644
> --- a/drivers/md/dm-writecache.c
> +++ b/drivers/md/dm-writecache.c
> @@ -855,6 +855,8 @@ static void writecache_discard(struct dm_writecache *wc, sector_t start, sector_
>  				}
>  				discarded_something = true;
>  			}
> +			if (!writecache_entry_is_committed(wc, e))
> +				wc->uncommitted_blocks--;
>  			writecache_free_entry(wc, e);
>  		}
>  
> -- 
> 1.8.3.1
>