mm, dax: change pmd_fault() to take only vmf parameter

pmd_fault() and related functions really only need the vmf parameter since
the additional parameters are all included in the vmf struct.  Remove the
additional parameter and simplify pmd_fault() and friends.

Link: http://lkml.kernel.org/r/1484085142-2297-8-git-send-email-ross.zwisler@linux.intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c
index a8833cc35697..18e9875f6277 100644
--- a/drivers/dax/dax.c
+++ b/drivers/dax/dax.c
@@ -472,8 +472,7 @@ static int dax_dev_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
         return rc;
 }
 
-static int __dax_dev_pmd_fault(struct dax_dev *dax_dev,
-                struct vm_area_struct *vma, struct vm_fault *vmf)
+static int __dax_dev_pmd_fault(struct dax_dev *dax_dev, struct vm_fault *vmf)
 {
         unsigned long pmd_addr = vmf->address & PMD_MASK;
         struct device *dev = &dax_dev->dev;
@@ -482,7 +481,7 @@ static int __dax_dev_pmd_fault(struct dax_dev *dax_dev,
         pgoff_t pgoff;
         pfn_t pfn;
 
-        if (check_vma(dax_dev, vma, __func__))
+        if (check_vma(dax_dev, vmf->vma, __func__))
                 return VM_FAULT_SIGBUS;
 
         dax_region = dax_dev->region;
@@ -497,7 +496,7 @@ static int __dax_dev_pmd_fault(struct dax_dev *dax_dev,
                 return VM_FAULT_SIGBUS;
         }
 
-        pgoff = linear_page_index(vma, pmd_addr);
+        pgoff = linear_page_index(vmf->vma, pmd_addr);
         phys = pgoff_to_phys(dax_dev, pgoff, PMD_SIZE);
         if (phys == -1) {
                 dev_dbg(dev, "%s: phys_to_pgoff(%#lx) failed\n", __func__,
@@ -507,22 +506,23 @@ static int __dax_dev_pmd_fault(struct dax_dev *dax_dev,
 
         pfn = phys_to_pfn_t(phys, dax_region->pfn_flags);
 
-        return vmf_insert_pfn_pmd(vma, vmf->address, vmf->pmd, pfn,
+        return vmf_insert_pfn_pmd(vmf->vma, vmf->address, vmf->pmd, pfn,
                         vmf->flags & FAULT_FLAG_WRITE);
 }
 
-static int dax_dev_pmd_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+static int dax_dev_pmd_fault(struct vm_fault *vmf)
 {
         int rc;
-        struct file *filp = vma->vm_file;
+        struct file *filp = vmf->vma->vm_file;
         struct dax_dev *dax_dev = filp->private_data;
 
         dev_dbg(&dax_dev->dev, "%s: %s: %s (%#lx - %#lx)\n", __func__,
                         current->comm, (vmf->flags & FAULT_FLAG_WRITE)
-                        ? "write" : "read", vma->vm_start, vma->vm_end);
+                        ? "write" : "read",
+                        vmf->vma->vm_start, vmf->vma->vm_end);
 
         rcu_read_lock();
-        rc = __dax_dev_pmd_fault(dax_dev, vma, vmf);
+        rc = __dax_dev_pmd_fault(dax_dev, vmf);
         rcu_read_unlock();
 
         return rc;