linux-ext4 - Re: [PATCH v3 0/3] Add XIP support to 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: <20131219171848.GC9130@thunk.org>
Date:	Thu, 19 Dec 2013 12:18:48 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	Matthew Wilcox <matthew@....cx>
Cc:	Dave Chinner <david@...morbit.com>,
	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v3 0/3] Add XIP support to ext4

On Thu, Dec 19, 2013 at 10:12:02AM -0700, Matthew Wilcox wrote:
> 
> ... I think it'll actually be ext4_get_block_fault, not _write, and it
> will include code to zero the returned blocks if they're uninitialised.

I assume what you mean here is if we see that the blocks are
uninitialized, we don't need to read from the persistent memory at
all; we can just map in a zeroed page, hopefully one from our stock of
pre-zeroed pages.  Yes?

						- 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