linux-kernel - [PATCH v2] uio: Change return type to vm_fault

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Date:   Mon, 16 Apr 2018 20:24:40 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org, willy@...radead.org
Subject: [PATCH v2] uio: Change return type to vm_fault_t

Use new return type vm_fault_t for fault handler
in struct vm_operations_struct. 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.

Reference commit id->
1c8f422059ae5da07db7406ab916203f9417e396

Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
Reviewed-by: Matthew Wilcox <mawilcox@...rosoft.com>
---
v2: Modified the change log

 drivers/uio/uio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index fd48483..d9235f3 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -597,7 +597,7 @@ static int uio_find_mem_index(struct vm_area_struct *vma)
 	return -1;
 }

-static int uio_vma_fault(struct vm_fault *vmf)
+static vm_fault_t uio_vma_fault(struct vm_fault *vmf)
 {
 	struct uio_device *idev = vmf->vma->vm_private_data;
 	struct page *page;
--
1.9.1