diff mbox

mm: Remove PG_highmem description

Message ID 1517391212-2950-1-git-send-email-miles.chen@mediatek.com (mailing list archive)
State New, archived
Headers show

Commit Message

Miles Chen Jan. 31, 2018, 9:33 a.m. UTC
From: Miles Chen <miles.chen@mediatek.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@mediatek.com>
---
 include/linux/page-flags.h | 5 -----
 1 file changed, 5 deletions(-)

Comments

Michal Hocko Jan. 31, 2018, 1:05 p.m. UTC | #1
On Wed 31-01-18 17:33:32, miles.chen@mediatek.com wrote:
> From: Miles Chen <miles.chen@mediatek.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@mediatek.com>

Acked-by: Michal Hocko <mhocko@suse.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
>
diff mbox

Patch

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!