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| author | Souptick Joarder <jrdr.linux@gmail.com> | 2018-06-11 23:29:04 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-07-02 16:54:26 +0300 |
| commit | a545cf032d11437ed86e62f00d499108d91cae54 (patch) | |
| tree | 368c9afb1391eb650f453624d52491dce5f04ef2 /drivers/misc/ocxl/sysfs.c | |
| parent | 021c91791a5e7e85c567452f1be3e4c2c6cb6063 (diff) | |
| download | linux-a545cf032d11437ed86e62f00d499108d91cae54.tar.xz | |
ocxl: Change return type for fault handler
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.
Ref-> commit 1c8f422059ae ("mm: change return type to vm_fault_t")
There is an existing bug when vm_insert_pfn() can return ENOMEM which
was ignored and VM_FAULT_NOPAGE returned as default. The new inline
vmf_insert_pfn() has removed this inefficiency by returning correct
vm_fault_ type.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc/ocxl/sysfs.c')
| -rw-r--r-- | drivers/misc/ocxl/sysfs.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/misc/ocxl/sysfs.c b/drivers/misc/ocxl/sysfs.c index d9753a1db14b..0ab1fd1b2682 100644 --- a/drivers/misc/ocxl/sysfs.c +++ b/drivers/misc/ocxl/sysfs.c @@ -64,7 +64,7 @@ static ssize_t global_mmio_read(struct file *filp, struct kobject *kobj, return count; } -static int global_mmio_fault(struct vm_fault *vmf) +static vm_fault_t global_mmio_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; struct ocxl_afu *afu = vma->vm_private_data; @@ -75,8 +75,7 @@ static int global_mmio_fault(struct vm_fault *vmf) offset = vmf->pgoff; offset += (afu->global_mmio_start >> PAGE_SHIFT); - vm_insert_pfn(vma, vmf->address, offset); - return VM_FAULT_NOPAGE; + return vmf_insert_pfn(vma, vmf->address, offset); } static const struct vm_operations_struct global_mmio_vmops = { |