From d8a849e1bc123790bbbf1facba94452a3aef5736 Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Wed, 22 Feb 2017 15:40:03 -0800 Subject: mm, dax: make pmd_fault() and friends be the same as fault() Instead of passing in multiple parameters in the pmd_fault() handler, a vmf can be passed in just like a fault() handler. This will simplify code and remove the need for the actual pmd fault handlers to allocate a vmf. Related functions are also modified to do the same. [dave.jiang@intel.com: fix issue with xfs_tests stall when DAX option is off] Link: http://lkml.kernel.org/r/148469861071.195597.3619476895250028518.stgit@djiang5-desk3.ch.intel.com Link: http://lkml.kernel.org/r/1484085142-2297-7-git-send-email-ross.zwisler@linux.intel.com Signed-off-by: Dave Jiang Reviewed-by: Ross Zwisler Reviewed-by: Jan Kara Cc: Dave Chinner Cc: Matthew Wilcox Cc: Steven Rostedt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/dax/dax.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) (limited to 'drivers/dax/dax.c') diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c index ed758b74ddf0..a8833cc35697 100644 --- a/drivers/dax/dax.c +++ b/drivers/dax/dax.c @@ -473,10 +473,9 @@ static int dax_dev_fault(struct vm_area_struct *vma, struct vm_fault *vmf) } static int __dax_dev_pmd_fault(struct dax_dev *dax_dev, - struct vm_area_struct *vma, unsigned long addr, pmd_t *pmd, - unsigned int flags) + struct vm_area_struct *vma, struct vm_fault *vmf) { - unsigned long pmd_addr = addr & PMD_MASK; + unsigned long pmd_addr = vmf->address & PMD_MASK; struct device *dev = &dax_dev->dev; struct dax_region *dax_region; phys_addr_t phys; @@ -508,23 +507,22 @@ 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, addr, pmd, pfn, - flags & FAULT_FLAG_WRITE); + return vmf_insert_pfn_pmd(vma, vmf->address, vmf->pmd, pfn, + vmf->flags & FAULT_FLAG_WRITE); } -static int dax_dev_pmd_fault(struct vm_area_struct *vma, unsigned long addr, - pmd_t *pmd, unsigned int flags) +static int dax_dev_pmd_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { int rc; struct file *filp = 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, (flags & FAULT_FLAG_WRITE) + current->comm, (vmf->flags & FAULT_FLAG_WRITE) ? "write" : "read", vma->vm_start, vma->vm_end); rcu_read_lock(); - rc = __dax_dev_pmd_fault(dax_dev, vma, addr, pmd, flags); + rc = __dax_dev_pmd_fault(dax_dev, vma, vmf); rcu_read_unlock(); return rc; -- cgit v1.2.3-55-g7522