diff options
| author | Roland McGrath <roland@gnu.org> | 1996-03-29 18:57:34 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 1996-03-29 18:57:34 +0000 |
| commit | 7009f2e4313b85d3d42bf9dc6f162bbec09dc8b0 (patch) | |
| tree | 022db6c1bd16d67d33c6ac4e103dddde25ade104 | |
| parent | ebf009191a0da2858439adce6d2aa90e4b1f4cf3 (diff) | |
Initialize shared page magic number.
| -rw-r--r-- | libdiskfs/io-map-cntl.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/libdiskfs/io-map-cntl.c b/libdiskfs/io-map-cntl.c index 455da0e6..b45ccffd 100644 --- a/libdiskfs/io-map-cntl.c +++ b/libdiskfs/io-map-cntl.c @@ -1,5 +1,5 @@ -/* - Copyright (C) 1994 Free Software Foundation +/* + Copyright (C) 1994, 1996 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as @@ -27,16 +27,17 @@ diskfs_S_io_map_cntl (struct protid *cred, { if (!cred) return EOPNOTSUPP; - + assert (__vm_page_size >= sizeof (struct shared_io)); mutex_lock (&cred->po->np->lock); if (!cred->mapped) { default_pager_object_create (diskfs_default_pager, &cred->shared_object, __vm_page_size); - vm_map (mach_task_self (), (u_int *)&cred->mapped, __vm_page_size, 0, 1, - cred->shared_object, 0, 0, VM_PROT_READ|VM_PROT_WRITE, - VM_PROT_READ|VM_PROT_WRITE, 0); + vm_map (mach_task_self (), (u_int *)&cred->mapped, vm_page_size, 0, 1, + cred->shared_object, 0, 0, + VM_PROT_READ|VM_PROT_WRITE, VM_PROT_READ|VM_PROT_WRITE, 0); + cred->mapped->shared_page_magic = SHARED_PAGE_MAGIC; cred->mapped->conch_status = USER_HAS_NOT_CONCH; spin_lock_init (&cred->mapped->lock); *ctlobj = cred->shared_object; |