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* [PATCH] staging: lustre: include linux/highmem.h when needed
@ 2018-05-30 21:38 Arnd Bergmann
  2018-05-31  5:17 ` NeilBrown
  0 siblings, 1 reply; 2+ messages in thread
From: Arnd Bergmann @ 2018-05-30 21:38 UTC (permalink / raw)
  To: Oleg Drokin, Andreas Dilger, James Simmons, Greg Kroah-Hartman
  Cc: Arnd Bergmann, Doug Oucharek, NeilBrown, Dmitry Eremin,
	Ingo Molnar, lustre-devel, devel, linux-kernel

Something in recent linux-next kernels caused linux/highmem.h to
no longer be included implicitly from o2iblnd_cb.c, causing a build
failure:

drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c: In function 'kiblnd_kvaddr_to_page':
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c:549:15: error: 'PKMAP_BASE' undeclared (first use in this function); did you mean 'RTM_BASE'?
  if (vaddr >= PKMAP_BASE &&
               ^~~~~~~~~~
               RTM_BASE
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c:549:15: note: each undeclared identifier is reported only once for each function it appears in
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c:550:28: error: 'LAST_PKMAP' undeclared (first use in this function); did you mean 'AT_HWCAP'?
      vaddr < (PKMAP_BASE + LAST_PKMAP * PAGE_SIZE)) {
                            ^~~~~~~~~~
                            AT_HWCAP

This adds back an explicit include for the header.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
index 47eb8b4c28db..65b7a62943ad 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
@@ -35,6 +35,7 @@
  * Author: Eric Barton <eric@bartonsoftware.com>
  */
 
+#include <linux/highmem.h>
 #include "o2iblnd.h"
 
 #define MAX_CONN_RACES_BEFORE_ABORT 20
-- 
2.9.0

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH] staging: lustre: include linux/highmem.h when needed
  2018-05-30 21:38 [PATCH] staging: lustre: include linux/highmem.h when needed Arnd Bergmann
@ 2018-05-31  5:17 ` NeilBrown
  0 siblings, 0 replies; 2+ messages in thread
From: NeilBrown @ 2018-05-31  5:17 UTC (permalink / raw)
  To: Arnd Bergmann, Oleg Drokin, Andreas Dilger, James Simmons,
	Greg Kroah-Hartman
  Cc: Arnd Bergmann, Doug Oucharek, Dmitry Eremin, Ingo Molnar,
	lustre-devel, devel, linux-kernel

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On Wed, May 30 2018, Arnd Bergmann wrote:

> Something in recent linux-next kernels caused linux/highmem.h to
> no longer be included implicitly from o2iblnd_cb.c, causing a build
> failure:
>
> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c: In function 'kiblnd_kvaddr_to_page':
> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c:549:15: error: 'PKMAP_BASE' undeclared (first use in this function); did you mean 'RTM_BASE'?
>   if (vaddr >= PKMAP_BASE &&
>                ^~~~~~~~~~
>                RTM_BASE
> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c:549:15: note: each undeclared identifier is reported only once for each function it appears in
> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c:550:28: error: 'LAST_PKMAP' undeclared (first use in this function); did you mean 'AT_HWCAP'?
>       vaddr < (PKMAP_BASE + LAST_PKMAP * PAGE_SIZE)) {
>                             ^~~~~~~~~~
>                             AT_HWCAP
>
> This adds back an explicit include for the header.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Thanks for finding and fixing this.  I did recently reduce the number
of include files that were automatically included everywhere.  Clearly
some config combinations didn't get tested properly.

Reviewed-by: NeilBrown <neilb@suse.com>

Thanks,
NeilBrown


> ---
>  drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> index 47eb8b4c28db..65b7a62943ad 100644
> --- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> +++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
> @@ -35,6 +35,7 @@
>   * Author: Eric Barton <eric@bartonsoftware.com>
>   */
>  
> +#include <linux/highmem.h>
>  #include "o2iblnd.h"
>  
>  #define MAX_CONN_RACES_BEFORE_ABORT 20
> -- 
> 2.9.0

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^ permalink raw reply	[flat|nested] 2+ messages in thread

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2018-05-31  5:17 ` NeilBrown

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