linux-kernel - Re: [PATCH v2 3/8] kexec: export PG

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Date:   Mon, 11 Mar 2019 18:04:38 +0800
From:   Dave Young <dyoung@...hat.com>
To:     David Hildenbrand <david@...hat.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, devel@...uxdriverproject.org,
        linux-fsdevel@...r.kernel.org, linux-pm@...r.kernel.org,
        xen-devel@...ts.xenproject.org,
        kexec-ml <kexec@...ts.infradead.org>, pv-drivers@...are.com,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Baoquan He <bhe@...hat.com>, Omar Sandoval <osandov@...com>,
        Arnd Bergmann <arnd@...db.de>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...e.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Lianbo Jiang <lijiang@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        Kazuhito Hagio <k-hagio@...jp.nec.com>
Subject: Re: [PATCH v2 3/8] kexec: export PG_offline to VMCOREINFO

> > The patch has been merged, would you mind to send a documentation patch
> > for the vmcoreinfo, which is added recently in Documentation/kdump/vmcoreinfo.txt
> > 
> > A brief description about how this vmcoreinfo field is used is good to
> > have.
> > 
> 
> Turns out, it was already documented
> 
> PG_lru|PG_private|PG_swapcache|PG_swapbacked|PG_slab|PG_hwpoision
> |PG_head_mask|PAGE_BUDDY_MAPCOUNT_VALUE(~PG_buddy)
> |PAGE_OFFLINE_MAPCOUNT_VALUE(~PG_offline)
> -----------------------------------------------------------------
> 
> Page attributes. These flags are used to filter various unnecessary for
> dumping pages.

Good enough, just ignore the request!

Thanks!