diff options
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 46 |
1 files changed, 19 insertions, 27 deletions
@@ -858,32 +858,6 @@ out: return rc; } -static int dax_insert_mapping(struct vm_fault *vmf, struct iomap *iomap, - loff_t pos, void *entry) -{ - const sector_t sector = dax_iomap_sector(iomap, pos); - struct vm_area_struct *vma = vmf->vma; - struct address_space *mapping = vma->vm_file->f_mapping; - unsigned long vaddr = vmf->address; - void *ret; - int rc; - pfn_t pfn; - - rc = dax_iomap_pfn(iomap, pos, PAGE_SIZE, &pfn); - if (rc < 0) - return rc; - - ret = dax_insert_mapping_entry(mapping, vmf, entry, sector, 0); - if (IS_ERR(ret)) - return PTR_ERR(ret); - - trace_dax_insert_mapping(mapping->host, vmf, ret); - if (vmf->flags & FAULT_FLAG_WRITE) - return vm_insert_mixed_mkwrite(vma, vaddr, pfn); - else - return vm_insert_mixed(vma, vaddr, pfn); -} - /* * The user has performed a load from a hole in the file. Allocating a new * page in the file would cause excessive storage usage for workloads with @@ -1119,6 +1093,7 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, bool write = vmf->flags & FAULT_FLAG_WRITE; int vmf_ret = 0; void *entry; + pfn_t pfn; trace_dax_pte_fault(inode, vmf, vmf_ret); /* @@ -1201,7 +1176,24 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, count_memcg_event_mm(vma->vm_mm, PGMAJFAULT); major = VM_FAULT_MAJOR; } - error = dax_insert_mapping(vmf, &iomap, pos, entry); + error = dax_iomap_pfn(&iomap, pos, PAGE_SIZE, &pfn); + if (error < 0) + goto error_finish_iomap; + + entry = dax_insert_mapping_entry(mapping, vmf, entry, + dax_iomap_sector(&iomap, pos), + 0); + if (IS_ERR(entry)) { + error = PTR_ERR(entry); + goto error_finish_iomap; + } + + trace_dax_insert_mapping(inode, vmf, entry); + if (write) + error = vm_insert_mixed_mkwrite(vma, vaddr, pfn); + else + error = vm_insert_mixed(vma, vaddr, pfn); + /* -EBUSY is fine, somebody else faulted on the same PTE */ if (error == -EBUSY) error = 0; |