linux-ext4 - Re: [PATCH 2/2] ext4: Add EXT4_IOC_TRIM ioctl to handle batched discard

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: <20101119161929.GI10039@thunk.org>
Date:	Fri, 19 Nov 2010 11:19:29 -0500
From:	Ted Ts'o <tytso@....edu>
To:	Lukas Czerner <lczerner@...hat.com>
Cc:	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, hch@...radead.org,
	sandeen@...hat.com
Subject: Re: [PATCH 2/2] ext4: Add EXT4_IOC_TRIM ioctl to handle batched
 discard

On Thu, Nov 18, 2010 at 08:36:49AM +0100, Lukas Czerner wrote:
> @@ -541,6 +541,7 @@ struct ext4_new_group_data {
>   /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */
>  #define EXT4_IOC_ALLOC_DA_BLKS		_IO('f', 12)
>  #define EXT4_IOC_MOVE_EXT		_IOWR('f', 15, struct move_extent)
> +#define EXT4_IOC_TRIM			FITRIM

If we're going to keep FITRIM defined in include/fs.h, then we should
just dispatch off of FITRIM below, and not define EXT4_IOC_TRIM.

> +	case EXT4_IOC_TRIM:
> +	{

Agreed?

There's no point making this look like an EXT4-specific interface; if
other file systems want to implement FITRIM as an ioctl, they are free
to do so.

						- Ted
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html