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

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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/[email protected]
Signed-off-by: Dave Jiang <[email protected]>
Reviewed-by: Ross Zwisler <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Dave Jiang <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Steven Rostedt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Dave Jiang 2017-02-22 15:40:06 -08:00 • committed by Linus Torvalds
commit f42003917b
8 changed files with 74 additions and 85 deletions
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18
drivers/dax/dax.c
View file

@ -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;