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de96d148 | 1 | /* Provide kernel hint to read ahead. |
f7a9f785 | 2 | Copyright (C) 2002-2016 Free Software Foundation, Inc. |
f10eff58 DJ |
3 | This file is part of the GNU C Library. |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
f10eff58 DJ |
18 | |
19 | #include <errno.h> | |
de96d148 DJ |
20 | #include <fcntl.h> |
21 | #include <sys/types.h> | |
22 | #include <endian.h> | |
23 | ||
f10eff58 DJ |
24 | #include <sysdep.h> |
25 | #include <sys/syscall.h> | |
f10eff58 | 26 | |
f10eff58 | 27 | |
de96d148 DJ |
28 | ssize_t |
29 | __readahead (int fd, off64_t offset, size_t count) | |
30 | { | |
31 | return INLINE_SYSCALL (readahead, 5, fd, 0, | |
32 | __LONG_LONG_PAIR ((off_t) (offset >> 32), | |
33 | (off_t) (offset & 0xffffffff)), | |
34 | count); | |
f10eff58 DJ |
35 | } |
36 | ||
de96d148 | 37 | weak_alias (__readahead, readahead) |