From: Al Viro <viro@ZenIV.linux.org.uk>
To: NeilBrown <neilb@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
David Herrmann <dh.herrmann@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Howells <dhowells@redhat.com>,
Oleg Nesterov <oleg@redhat.com>
Subject: Re: [PATCH] fs: fix i_writecount on shmem and friends
Date: Fri, 14 Mar 2014 04:51:05 +0000 [thread overview]
Message-ID: <20140314045105.GN18016@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20140313165541.2b23dc96@notabene.brown>
On Thu, Mar 13, 2014 at 04:55:41PM +1100, NeilBrown wrote:
> Can we do direct writes from kernel space yet? If so I'll change the code to
> do that so that it will work with any filesystem (which supports direct
> writes).
You can - see __swap_writepage() (mm/page_io.c). However, that area is
about to get a lot of massage, so it would make sense to wait a bit...
> (The documentation says we that bitmap files should only be used on ext2 or
> ext3. Most people use bitmaps on the raw devices so hopefully the few who
> have a need for files will read the documentation :-)
>
> (and yes, I check for FMODE_WRITE)
Umm... Where?
prev parent reply other threads:[~2014-03-14 4:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-03 15:16 David Herrmann
2014-03-11 19:05 ` Linus Torvalds
2014-03-12 18:19 ` Al Viro
2014-03-12 22:30 ` David Herrmann
2014-03-13 0:37 ` Al Viro
2014-03-13 11:03 ` David Herrmann
2014-03-20 11:13 ` David Herrmann
2014-03-13 4:08 ` NeilBrown
2014-03-13 4:29 ` Al Viro
2014-03-13 5:55 ` NeilBrown
2014-03-14 4:51 ` Al Viro [this message]
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