diff options
Diffstat (limited to 'libpager/pager-flush.c')
-rw-r--r-- | libpager/pager-flush.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/libpager/pager-flush.c b/libpager/pager-flush.c new file mode 100644 index 00000000..55a76de6 --- /dev/null +++ b/libpager/pager-flush.c @@ -0,0 +1,45 @@ +/* Functions for flushing data + Copyright (C) 1994, 1996 Free Software Foundation + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "priv.h" + +/* Have the kernel flush all pages in the pager; if WAIT is set, then + wait for them to be finally expunged before returning. */ +void +pager_flush (struct pager *p, int wait) +{ + vm_address_t offset; + vm_size_t len; + + pager_report_extent (p->upi, &offset, &len); + + _pager_lock_object (p, offset, len, MEMORY_OBJECT_RETURN_NONE, 1, + VM_PROT_NO_CHANGE, wait); +} + + +/* Have the kernel write back some pages of a pager from OFFSET to + OFFSET+SIZE; if WAIT is set, then wait for them to be finally + written before returning. */ +void +pager_flush_some (struct pager *p, vm_address_t offset, + vm_size_t size, int wait) +{ + _pager_lock_object (p, offset, size, MEMORY_OBJECT_RETURN_NONE, 1, + VM_PROT_NO_CHANGE, wait); +} + |