ngx_read_ahead_n  278 os/unix/ngx_files.h #define ngx_read_ahead_n         "fcntl(fd, F_READAHEAD)"
ngx_read_ahead_n  285 os/unix/ngx_files.h #define ngx_read_ahead_n         "posix_fadvise(POSIX_FADV_SEQUENTIAL)"
ngx_read_ahead_n  290 os/unix/ngx_files.h #define ngx_read_ahead_n         "ngx_read_ahead_n"