linux-kernel - Re: [PATCH v2] ext4: bio_alloc with __GFP_DIRECT

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]

Date:   Thu, 31 Oct 2019 17:29:58 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Gao Xiang <gaoxiang25@...wei.com>, Theodore Ts'o <tytso@....edu>,
        "Andreas Dilger" <adilger.kernel@...ger.ca>
CC:     <linux-ext4@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Ritesh Harjani" <riteshh@...ux.ibm.com>
Subject: Re: [PATCH v2] ext4: bio_alloc with __GFP_DIRECT_RECLAIM never fails

On 2019/10/31 17:23, Gao Xiang wrote:
> Similar to [1] [2], bio_alloc with __GFP_DIRECT_RECLAIM flags
> guarantees bio allocation under some given restrictions, as
> stated in block/bio.c and fs/direct-io.c So here it's ok to
> not check for NULL value from bio_alloc().
> 
> [1] https://lore.kernel.org/r/20191030035518.65477-1-gaoxiang25@huawei.com
> [2] https://lore.kernel.org/r/20190830162812.GA10694@infradead.org
> Cc: Theodore Ts'o <tytso@....edu>
> Cc: Andreas Dilger <adilger.kernel@...ger.ca>
> Cc: Ritesh Harjani <riteshh@...ux.ibm.com>
> Cc: Chao Yu <yuchao0@...wei.com>
> Signed-off-by: Gao Xiang <gaoxiang25@...wei.com>

Reviewed-by: Chao Yu <yuchao0@...wei.com>

Thanks,