diff options
| -rw-r--r-- | fs/orangefs/file.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/fs/orangefs/file.c b/fs/orangefs/file.c index 3a7319a1bfdb..26358efbf794 100644 --- a/fs/orangefs/file.c +++ b/fs/orangefs/file.c @@ -528,6 +528,28 @@ static long orangefs_ioctl(struct file *file, unsigned int cmd, unsigned long ar return ret; } +static int orangefs_fault(struct vm_fault *vmf) +{ + struct file *file = vmf->vma->vm_file; + int rc; + rc = orangefs_inode_getattr(file->f_mapping->host, 0, 1, + STATX_SIZE); + if (rc == -ESTALE) + rc = -EIO; + if (rc) { + gossip_err("%s: orangefs_inode_getattr failed, " + "rc:%d:.\n", __func__, rc); + return rc; + } + return filemap_fault(vmf); +} + +const struct vm_operations_struct orangefs_file_vm_ops = { + .fault = orangefs_fault, + .map_pages = filemap_map_pages, + .page_mkwrite = filemap_page_mkwrite, +}; + /* * Memory map a region of a file. */ @@ -539,12 +561,16 @@ static int orangefs_file_mmap(struct file *file, struct vm_area_struct *vma) (char *)file->f_path.dentry->d_name.name : (char *)"Unknown")); + if ((vma->vm_flags & VM_SHARED) && (vma->vm_flags & VM_MAYWRITE)) + return -EINVAL; + /* set the sequential readahead hint */ vma->vm_flags |= VM_SEQ_READ; vma->vm_flags &= ~VM_RAND_READ; - /* Use readonly mmap since we cannot support writable maps. */ - return generic_file_readonly_mmap(file, vma); + file_accessed(file); + vma->vm_ops = &orangefs_file_vm_ops; + return 0; } #define mapping_nrpages(idata) ((idata)->nrpages) |