[PATCH 0/5] proc: export more page flags in /proc/kpageflags (take 4)

[Wu Fengguang]

Hi all,

Export 9 more flags to end users (and more for kernel developers):

        11. KPF_MMAP            (pseudo flag) memory mapped page
        12. KPF_ANON            (pseudo flag) memory mapped page (anonymous)
        13. KPF_SWAPCACHE       page is in swap cache
        14. KPF_SWAPBACKED      page is swap/RAM backed
        15. KPF_COMPOUND_HEAD   (*)
        16. KPF_COMPOUND_TAIL   (*)
        17. KPF_UNEVICTABLE     page is in the unevictable LRU list
        18. KPF_HWPOISON        hardware detected corruption
        19. KPF_NOPAGE          (pseudo flag) no page frame at the address

        (*) For compound pages, exporting _both_ head/tail info enables
            users to tell where a compound page starts/ends, and its order.

Please check the documentary patch and changelog of the final patch
for the details.

	[PATCH 1/5] pagemap: document clarifications                                             
	[PATCH 2/5] pagemap: documentation new page flags                                        
	[PATCH 3/5] mm: introduce PageHuge() for testing huge/gigantic pages                     
	[PATCH 4/5] proc: kpagecount/kpageflags code cleanup                                     
	[PATCH 5/5] proc: export more page flags in /proc/kpageflags                             

Thanks,
Fengguang
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