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support posix_madvise (previous a stub)

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the check against MADV_DONTNEED to because linux MADV_DONTNEED
semantics conflict dangerously with the POSIX semantics
This commit is contained in:
Rich Felker 2011-04-20 15:25:28 -04:00
commit 2357350924
1 changed files with 3 additions and 1 deletions
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4
src/mman/posix_madvise.c
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@ -1,6 +1,8 @@
#define _GNU_SOURCE
#include <sys/mman.h> #include <sys/mman.h>
int posix_madvise(void *addr, size_t len, int advice) int posix_madvise(void *addr, size_t len, int advice)
{ {
return 0; if (advice == MADV_DONTNEED) return 0;
return -__syscall(SYS_madvise, addr, len, advice);
} }