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-rw-r--r--libpager/pager-flush.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/libpager/pager-flush.c b/libpager/pager-flush.c
new file mode 100644
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--- /dev/null
+++ b/libpager/pager-flush.c
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+/* 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);
+}
+