[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20161021132400.GA28880@infradead.org>
Date: Fri, 21 Oct 2016 06:24:00 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Richard Weinberger <richard@....at>
Cc: Christoph Hellwig <hch@...radead.org>,
linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-fsdevel@...r.kernel.org, dedekind1@...il.com,
adrian.hunter@...el.com, tytso@....edu, jaegeuk@...nel.org,
david@...ma-star.at, wd@...x.de, sbabic@...x.de,
dengler@...utronix.de
Subject: Re: [PATCH 01/26] fscrypto: Add buffer operations
On Fri, Oct 21, 2016 at 03:17:03PM +0200, Richard Weinberger wrote:
> UBIFS works on kmalloc()'ed buffers where it constructs the NAND/NOR pages
> which will be written to the MTD. JFFS2 does the same.
Yes, you can trivially do a virt_to_page on a kmalloc buffer.
> Another reason why I did the buffer functions is because fscrypt_encrypt_page()
> always allocates a bounce page as temporary memory. For ext4 this is needed,
> for UBIFS not.
> UBIFS has already a construction buffer, especially since it also does compression.
We should defintively find a way to avoid that, but it's a separate
issue from adding another API just to pass buffers.
Powered by blists - more mailing lists