diff options
| -rw-r--r-- | isofs/pager.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/isofs/pager.c b/isofs/pager.c index 259581e8..c2da2c0b 100644 --- a/isofs/pager.c +++ b/isofs/pager.c @@ -169,6 +169,9 @@ diskfs_get_filemap (struct node *np, vm_prot_t prot) assert_backtrace (S_ISDIR (np->dn_stat.st_mode) || S_ISREG (np->dn_stat.st_mode) || S_ISLNK (np->dn_stat.st_mode)); + + /* We only support read-only pagers. */ + assert_backtrace (prot == VM_PROT_READ); pthread_spin_lock (&node2pagelock); |