Re: [PATCH v2 1/4] define PAGECACHE_TAG_* as enumeration under include/uapi
From: Naoya Horiguchi <hidden>
Date: 2014-07-04 01:43:13
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On Fri, Jul 04, 2014 at 11:16:39AM +1000, Dave Chinner wrote:
On Thu, Jul 03, 2014 at 05:52:12PM -0400, Naoya Horiguchi wrote:quoted
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.
Hm, OK, so I'll do whole this series without pagecache tag things. Thanks, Naoya Horiguchi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>