On Wed, Mar 26, 2008 at 09:26:57AM +1100, Stephen Rothwell wrote:
> However, have you made any progress on Christoph's suggestion:
>
> "The real fix is that ext4 shouldn't be using ZERO_PAGE(). Please use
> the same zeroing helpers all the other filesystems and drivers use."
When Aneesh asked for clarification about Christoph's suggestion, he
got the following response (see attached).
- Ted
--- Begin Message ---
On Mon, Mar 17, 2008 at 11:22:30PM +0530, Aneesh Kumar K.V wrote:
> Hi Christoph,
>
> I have changes pending for ext4 which uses ZERO_PAGE(0) to zero out
> file system blocks.
>
> http://repo.or.cz/w/ext4-patch-queue.git?a=blob;f=ext4-fallocate-full-fs-ENOSPC-handling.patch;h=e14ec2a53f008c3f4b80544a897165de4bb5d360;hb=HEAD
>
> The changes are needed to make sure we allow writing to prealloc space
> even when there are no space left in the file system to insert new
> extent details. To use ZERO_PAGE in ext4 i would need patches to export
> some of the variables. I found that you answered Ted's patch at
>
> http://ozlabs.org/pipermail/linuxppc-dev/2008-March/052956.html
>
> I have a patch that does the same thing for multiple arch. Can you help
> me understand what you meant by zeroing helpers ?
Ok, you're actually sending down the page and not copying from it.
This is probab;y okay.
--- End Message ---
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
