linux-kernel - [PATCH v3] fs: kernfs: Adding new return type vm_fault

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Date:   Sat, 21 Apr 2018 01:15:24 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     gregkh@...uxfoundation.org, tj@...nel.org
Cc:     linux-kernel@...r.kernel.org, willy@...radead.org
Subject: [PATCH v3] fs: kernfs: Adding new return type vm_fault_t

Use new return type vm_fault_t for page_mkwrite and
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.

Reference id -> 1c8f422059ae ("mm: change return type to
vm_fault_t")

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

v3: Modified the change log

 fs/kernfs/file.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index fd5ce88..2015d8c 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -348,11 +348,11 @@ static void kernfs_vma_open(struct vm_area_struct *vma)
 	kernfs_put_active(of->kn);
 }
 
-static int kernfs_vma_fault(struct vm_fault *vmf)
+static vm_fault_t kernfs_vma_fault(struct vm_fault *vmf)
 {
 	struct file *file = vmf->vma->vm_file;
 	struct kernfs_open_file *of = kernfs_of(file);
-	int ret;
+	vm_fault_t ret;
 
 	if (!of->vm_ops)
 		return VM_FAULT_SIGBUS;
@@ -368,11 +368,11 @@ static int kernfs_vma_fault(struct vm_fault *vmf)
 	return ret;
 }
 
-static int kernfs_vma_page_mkwrite(struct vm_fault *vmf)
+static vm_fault_t kernfs_vma_page_mkwrite(struct vm_fault *vmf)
 {
 	struct file *file = vmf->vma->vm_file;
 	struct kernfs_open_file *of = kernfs_of(file);
-	int ret;
+	vm_fault_t ret;
 
 	if (!of->vm_ops)
 		return VM_FAULT_SIGBUS;
-- 
1.9.1