#include <linux/prctl.h> /* Definition of PR_* constants */ #include <sys/prctl.h> int prctl(PR_GET_IO_FLUSHER, 0L, 0L, 0L, 0L);
LIBRARY
Standard C library (libc, -lc)
DESCRIPTION
Return the IO_FLUSHER state of the caller. A value of 1 indicates
that the caller is in the IO_FLUSHER state; 0 indicates that the caller is
not in the IO_FLUSHER state.
The calling process must have the CAP_SYS_RESOURCE
capability.
RETURN VALUE
On success, this call returns the boolean value described above.
On error, -1 is returned, and errno is set to indicate the error.