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| author | Dan Williams <dan.j.williams@intel.com> | 2018-07-13 21:49:34 -0700 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2018-07-20 11:19:15 -0700 |
| commit | 226ab561075f6f8f3cd5f7b3b7544f3997aab51f (patch) | |
| tree | 20723173abf522721a86c034b3876ee48a5f337c /include/linux | |
| parent | 021c91791a5e7e85c567452f1be3e4c2c6cb6063 (diff) | |
| download | linux-226ab561075f6f8f3cd5f7b3b7544f3997aab51f.tar.gz linux-226ab561075f6f8f3cd5f7b3b7544f3997aab51f.tar.bz2 linux-226ab561075f6f8f3cd5f7b3b7544f3997aab51f.zip | |
device-dax: Convert to vmf_insert_mixed and vm_fault_t
Use new return type vm_fault_t for fault and huge_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.
Commit 1c8f422059ae ("mm: change return type to vm_fault_t")
Previously vm_insert_mixed() returned an error code which driver mapped into
VM_FAULT_* type. The new function vmf_insert_mixed() will replace this
inefficiency by returning VM_FAULT_* type.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/huge_mm.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index a8a126259bc4..d3bbf6bea9e9 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -3,6 +3,7 @@ #define _LINUX_HUGE_MM_H #include <linux/sched/coredump.h> +#include <linux/mm_types.h> #include <linux/fs.h> /* only for vma_is_dax() */ @@ -46,9 +47,9 @@ extern bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, extern int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, pgprot_t newprot, int prot_numa); -int vmf_insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr, +vm_fault_t vmf_insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmd, pfn_t pfn, bool write); -int vmf_insert_pfn_pud(struct vm_area_struct *vma, unsigned long addr, +vm_fault_t vmf_insert_pfn_pud(struct vm_area_struct *vma, unsigned long addr, pud_t *pud, pfn_t pfn, bool write); enum transparent_hugepage_flag { TRANSPARENT_HUGEPAGE_FLAG, |