- *env_ret = NULL;
- if (ll_file_nolock(file))
- RETURN(ERR_PTR(-EOPNOTSUPP));
-
- /*
- * page fault can be called when lustre IO is
- * already active for the current thread, e.g., when doing read/write
- * against user level buffer mapped from Lustre buffer. To avoid
- * stomping on existing context, optionally force an allocation of a new
- * one.
- */
- env = cl_env_nested_get(nest);
- if (IS_ERR(env))
- RETURN(ERR_PTR(-EINVAL));
-
- *env_ret = env;
-
- io = ccc_env_thread_io(env);
- io->ci_obj = ll_i2info(inode)->lli_clob;
- LASSERT(io->ci_obj != NULL);
-
- fio = &io->u.ci_fault;
- fio->ft_index = index;
- fio->ft_executable = vma->vm_flags&VM_EXEC;
-
- /*
- * disable VM_SEQ_READ and use VM_RAND_READ to make sure that
- * the kernel will not read other pages not covered by ldlm in
- * filemap_nopage. we do our readahead in ll_readpage.
- */
- if (ra_flags != NULL)
- *ra_flags = vma->vm_flags & (VM_RAND_READ|VM_SEQ_READ);
- vma->vm_flags &= ~VM_SEQ_READ;
- vma->vm_flags |= VM_RAND_READ;
-
- CDEBUG(D_MMAP, "vm_flags: %lx (%lu %d)\n", vma->vm_flags,
- fio->ft_index, fio->ft_executable);
+ if (ll_file_nolock(file))
+ RETURN(ERR_PTR(-EOPNOTSUPP));
+
+restart:
+ io = vvp_env_thread_io(env);
+ io->ci_obj = ll_i2info(inode)->lli_clob;
+ LASSERT(io->ci_obj != NULL);
+
+ fio = &io->u.ci_fault;
+ fio->ft_index = index;
+ fio->ft_executable = vma->vm_flags & VM_EXEC;
+
+ CDEBUG(D_MMAP,
+ DFID": vma=%p start=%#lx end=%#lx vm_flags=%#lx idx=%lu\n",
+ PFID(&ll_i2info(inode)->lli_fid), vma, vma->vm_start,
+ vma->vm_end, vma->vm_flags, fio->ft_index);
+
+ if (vma->vm_flags & VM_SEQ_READ)
+ io->ci_seq_read = 1;
+ else if (vma->vm_flags & VM_RAND_READ)
+ io->ci_rand_read = 1;