Re: [PATCH v2 1/4] define PAGECACHE_TAG_* as enumeration under include/uapi

From
Dave Chinner <david@fromorbit.com>
Date
2014-07-04 01:16:45
Also in
linux-mm, lkml
Reply to
Naoya Horiguchi, 2014-07-03
On Thu, Jul 03, 2014 at 05:52:12PM -0400, Naoya Horiguchi wrote:
We need the pagecache tags to be exported to userspace later in this
series for fincore(2), so this patch moves the definition to the new
include file for preparation. We also use the number of pagecache tags,
so this patch also adds it.

Signed-off-by: Naoya Horiguchi <redacted>
NACK.

The radix tree tags are deeply internal implementation details.
They are an artifact of the current mark-and-sweep writeback
algorithm, and as such should never, ever be exposed to userspace,
let alone fixed in an ABI we need to support forever more.

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

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Thread (10 messages) 10 messages, 4 authors, last reply 2014-07-04
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