Messages in this thread | | | From | OGAWA Hirofumi <> | Subject | Re: [PATCH 4/4] block: Optionally snapshot page contents to provide stable pages during write | Date | Tue, 08 Jan 2013 18:44:57 +0900 |
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"Darrick J. Wong" <darrick.wong@oracle.com> writes:
> On Fri, Dec 28, 2012 at 06:48:35AM +0900, OGAWA Hirofumi wrote: >> "Darrick J. Wong" <darrick.wong@oracle.com> writes: >> >> >> I think this flag should be separated into "FS provide stable page" and >> >> "FS needs bounce buffer for stable page". >> >> >> >> My fs (I guess btrfs also) provides stable page by better way, and >> >> doesn't need to wait writeback flags too. What needs is just to avoid >> >> those stable page stuff. >> > >> > How does your fs (are we talking about vfat?) provide stable pages? >> >> Basically it copies the data to another page before modifying data only >> if page has writeback flag. (this is about new fs under development stage.) > > Aha, we're talking about tux3. Since (afaik) there aren't any other > filesystems requesting this flag and tux3 uses the device bdi, should I just > create a patch and send it to you so it'll be included when tux3 goes in?
If core doesn't provide, no need to waste your time. I will.
Thanks. -- OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
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