Hi all,
After merging the akpm tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:
arch/powerpc/platforms/powernv/vas-fault.c: In function 'update_csb':
arch/powerpc/platforms/powernv/vas-fault.c:130:2: error: implicit declaration of function 'use_mm' [-Werror=implicit-function-declaration]
130 | use_mm(window->mm);
| ^~~~~~
arch/powerpc/platforms/powernv/vas-fault.c:142:2: error: implicit declaration of function 'unuse_mm' [-Werror=implicit-function-declaration]
142 | unuse_mm(window->mm);
| ^~~~~~~~
Caused by commit
7fe021a3f1c9 ("kernel: better document the use_mm/unuse_mm API contract")
interacting with commit
c96c4436aba4 ("powerpc/vas: Update CSB and notify process for fault CRBs")
from the powerpc tree.
I added the following patch for today:
From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Date: Wed, 22 Apr 2020 16:35:23 +1000
Subject: [PATCH] powerpc/vas: fix up for {un}use_mm() rename
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
---
arch/powerpc/platforms/powernv/vas-fault.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/vas-fault.c b/arch/powerpc/platforms/powernv/vas-fault.c
index 25db70be4c9c..266a6ca5e15e 100644
--- a/arch/powerpc/platforms/powernv/vas-fault.c
+++ b/arch/powerpc/platforms/powernv/vas-fault.c
@@ -127,7 +127,7 @@ static void update_csb(struct vas_window *window,
return;
}
- use_mm(window->mm);
+ kthread_use_mm(window->mm);
rc = copy_to_user(csb_addr, &csb, sizeof(csb));
/*
* User space polls on csb.flags (first byte). So add barrier
@@ -139,7 +139,7 @@ static void update_csb(struct vas_window *window,
smp_mb();
rc = copy_to_user(csb_addr, &csb, sizeof(u8));
}
- unuse_mm(window->mm);
+ kthread_unuse_mm(window->mm);
put_task_struct(tsk);
/* Success */
--
2.25.1
--
Cheers,
Stephen Rothwell
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