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c7f032bbe4
To prepare mlock2.h whose functionality will be reused. Link: http://lkml.kernel.org/r/1472554781-9835-4-git-send-email-wei.guo.simon@gmail.com Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Cc: Alexey Klimov <klimov.linux@gmail.com> Cc: Eric B Munson <emunson@akamai.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@suse.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Simon Guo <wei.guo.simon@gmail.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
21 lines
330 B
C
21 lines
330 B
C
#include <syscall.h>
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#include <errno.h>
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#ifndef MLOCK_ONFAULT
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#define MLOCK_ONFAULT 1
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#endif
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#ifndef MCL_ONFAULT
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#define MCL_ONFAULT (MCL_FUTURE << 1)
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#endif
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static int mlock2_(void *start, size_t len, int flags)
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{
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#ifdef __NR_mlock2
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return syscall(__NR_mlock2, start, len, flags);
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#else
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errno = ENOSYS;
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return -1;
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#endif
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}
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