linux-kernel - [PATCH] mm: Remove PG

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Date:   Wed, 31 Jan 2018 17:33:32 +0800
From:   <miles.chen@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Huang Ying <ying.huang@...el.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Michal Hocko <mhocko@...e.com>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <wsd_upstream@...iatek.com>,
        Miles Chen <miles.chen@...iatek.com>
Subject: [PATCH] mm: Remove PG_highmem description

From: Miles Chen <miles.chen@...iatek.com>

The commit cbe37d093707 ("[PATCH] mm: remove PG_highmem") has removed
PG_highmem to save a page flag. So the description of PG_highmem
is no longer needed, remove it.

Signed-off-by: Miles Chen <miles.chen@...iatek.com>
---
 include/linux/page-flags.h | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 3ec44e27aa9d..50c2b8786831 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -46,11 +46,6 @@
  * guarantees that this bit is cleared for a page when it first is entered into
  * the page cache.
  *
- * PG_highmem pages are not permanently mapped into the kernel virtual address
- * space, they need to be kmapped separately for doing IO on the pages.  The
- * struct page (these bits with information) are always mapped into kernel
- * address space...
- *
  * PG_hwpoison indicates that a page got corrupted in hardware and contains
  * data with incorrect ECC bits that triggered a machine check. Accessing is
  * not safe since it may cause another machine check. Don't touch!
-- 
2.12.5