linux-kernel - [PATCH] hwtracing: intel_th: Change return type to vm_fault

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Message-ID: <20180702155801.GA4010@jordon-HP-15-Notebook-PC>
Date:   Mon, 2 Jul 2018 21:28:01 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     akpm@...ux-foundation.org
Cc:     alexander.shishkin@...ux.intel.com, willy@...radead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] hwtracing: intel_th: Change return type to vm_fault_t

Use new return type vm_fault_t for fault handler. For
now, this is just documenting that the function returns
a VM_FAULT value rather than an errno. Once all instances
are converted, vm_fault_t will become a distinct type.

see commit 1c8f422059ae ("mm: change return type to
vm_fault_t") for reference.

Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
---
 drivers/hwtracing/intel_th/msu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index dfb57ea..0ac84eb 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1190,7 +1190,7 @@ static void msc_mmap_close(struct vm_area_struct *vma)
 	mutex_unlock(&msc->buf_mutex);
 }

-static int msc_mmap_fault(struct vm_fault *vmf)
+static vm_fault_t msc_mmap_fault(struct vm_fault *vmf)
 {
 	struct msc_iter *iter = vmf->vma->vm_file->private_data;
 	struct msc *msc = iter->msc;
--
1.9.1