linux-ext4 - Re: [PATCH 04/11] ext4: remove the call to fiemap_check_flags in ext4

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: <20200506092652.GF17863@quack2.suse.cz>
Date:   Wed, 6 May 2020 11:26:52 +0200
From:   Jan Kara <jack@...e.cz>
To:     Christoph Hellwig <hch@....de>
Cc:     linux-ext4@...r.kernel.org, viro@...iv.linux.org.uk, jack@...e.cz,
        tytso@....edu, adilger@...ger.ca, riteshh@...ux.ibm.com,
        amir73il@...il.com, linux-fsdevel@...r.kernel.org,
        linux-unionfs@...r.kernel.org
Subject: Re: [PATCH 04/11] ext4: remove the call to fiemap_check_flags in
 ext4_fiemap

On Tue 05-05-20 17:43:17, Christoph Hellwig wrote:
> iomap_fiemap already calls fiemap_check_flags first thing, so this
> additional check is redundant.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> Reviewed-by: Ritesh Harjani <riteshh@...ux.ibm.com>

Looks good to me. You can add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/ext4/extents.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
> index d2a2a3ba5c44a..a41ae7c510170 100644
> --- a/fs/ext4/extents.c
> +++ b/fs/ext4/extents.c
> @@ -4866,9 +4866,6 @@ int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
>  		fieinfo->fi_flags &= ~FIEMAP_FLAG_CACHE;
>  	}
>  
> -	if (fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR))
> -		return -EBADR;
> -
>  	/*
>  	 * For bitmap files the maximum size limit could be smaller than
>  	 * s_maxbytes, so check len here manually instead of just relying on the
> -- 
> 2.26.2
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR