1 /* Calls to enable and disable swapping on specified locations. Linux version.
2 Copyright (C) 1996, 1998, 1999, 2010, 2012 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
25 /* The swap priority is encoded as:
26 (prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK
28 #define SWAP_FLAG_PREFER 0x8000 /* Set if swap priority is specified. */
29 #define SWAP_FLAG_PRIO_MASK 0x7fff
30 #define SWAP_FLAG_PRIO_SHIFT 0
31 #define SWAP_FLAG_DISCARD 0x10000 /* Discard swap cluster after use. */
35 /* Make the block special device PATH available to the system for swapping.
36 This call is restricted to the super-user. */
37 extern int swapon (const char *__path, int __flags) __THROW;
39 /* Stop using block special device PATH for swapping. */
40 extern int swapoff (const char *__path) __THROW;
44 #endif /* _SYS_SWAP_H */