[PATCH] cxl: don't manipulate the mm.mm_users field directly

From: Laurent Dufour
Date: Wed Mar 10 2021 - 12:45:58 EST


It is better to rely on the API provided by the MM layer instead of
directly manipulating the mm_users field.

Signed-off-by: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
---
drivers/misc/cxl/fault.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c
index 01153b74334a..60c829113299 100644
--- a/drivers/misc/cxl/fault.c
+++ b/drivers/misc/cxl/fault.c
@@ -200,7 +200,7 @@ static struct mm_struct *get_mem_context(struct cxl_context *ctx)
if (ctx->mm == NULL)
return NULL;

- if (!atomic_inc_not_zero(&ctx->mm->mm_users))
+ if (!mmget_not_zero(ctx->mm))
return NULL;

return ctx->mm;
--
2.30.1