Re: [PATCH] mm: introduce dump_page() and print symbolic flag names

[Wu Fengguang]

On Wed, Dec 16, 2009 at 08:26:40PM +0800, Wu Fengguang wrote:
> - introduce dump_page() to print the page info for debugging some error condition.
> - convert three mm users: bad_page(), print_bad_pte() and memory offline failure. 
> - print an extra field: the symbolic names of page->flags
> 
> Example dump_page() output:
> 
> [  157.521694] page:ffffea0000a7cba8 count:2 mapcount:1
> mapping:ffff88001c901791 index:147
                                 ~~~ this is in fact 0x147

The index value may sometimes be misread as decimal number, shall this
be fixed by adding a "0x" prefix?

> [  157.525570] page flags: 100000000100068(uptodate|lru|active|swapbacked)
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