diff options
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/llite_internal.h | 4 | ||||
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/llite_mmap.c | 8 | ||||
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/vvp_io.c | 1 |
3 files changed, 12 insertions, 1 deletions
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h index 634ffa645e06..684405e26b58 100644 --- a/drivers/staging/lustre/lustre/llite/llite_internal.h +++ b/drivers/staging/lustre/lustre/llite/llite_internal.h @@ -894,6 +894,10 @@ struct vvp_io { * fault API used bitflags for return code. */ unsigned int ft_flags; + /** + * check that flags are from filemap_fault + */ + bool ft_flags_valid; } fault; } fault; } u; diff --git a/drivers/staging/lustre/lustre/llite/llite_mmap.c b/drivers/staging/lustre/lustre/llite/llite_mmap.c index 7dae610f5c86..59166481e1a2 100644 --- a/drivers/staging/lustre/lustre/llite/llite_mmap.c +++ b/drivers/staging/lustre/lustre/llite/llite_mmap.c @@ -310,10 +310,16 @@ static int ll_fault0(struct vm_area_struct *vma, struct vm_fault *vmf) vio->u.fault.ft_vma = vma; vio->u.fault.ft_vmpage = NULL; vio->u.fault.fault.ft_vmf = vmf; + vio->u.fault.fault.ft_flags = 0; + vio->u.fault.fault.ft_flags_valid = 0; result = cl_io_loop(env, io); - fault_ret = vio->u.fault.fault.ft_flags; + /* ft_flags are only valid if we reached + * the call to filemap_fault */ + if (vio->u.fault.fault.ft_flags_valid) + fault_ret = vio->u.fault.fault.ft_flags; + vmpage = vio->u.fault.ft_vmpage; if (result != 0 && vmpage != NULL) { page_cache_release(vmpage); diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c index a4117d6a3866..fd248745cbff 100644 --- a/drivers/staging/lustre/lustre/llite/vvp_io.c +++ b/drivers/staging/lustre/lustre/llite/vvp_io.c @@ -615,6 +615,7 @@ static int vvp_io_kernel_fault(struct vvp_fault_io *cfio) struct vm_fault *vmf = cfio->fault.ft_vmf; cfio->fault.ft_flags = filemap_fault(cfio->ft_vma, vmf); + cfio->fault.ft_flags_valid = 1; if (vmf->page) { CDEBUG(D_PAGE, |