$ git rd 
-:  -------- > 1:  479e7cfd lib/get_pid.c: Use PATH_MAX instead of a magic number
1:  1c08d6a8 ! 2:  7536a0ae lib/get_pid.c: pid_t is a signed integer
    @@ Metadata
      ## Commit message ##
         lib/get_pid.c: pid_t is a signed integer
     
    -    Print it with "%d".  Also, we need to adapt the size of the allocation.
    -    To avoid making mistakes, just make it PATH_MAX, and let the compiler
    -    optimize that if it's smart enough.
    +    Print it with "%d".
     
    +    Acked-by: Lukas Slebodnik <lslebodn@fedoraproject.org>
         Signed-off-by: Alejandro Colomar <alx@kernel.org>
     
      ## lib/get_pid.c ##
    -@@ lib/get_pid.c: int get_pidfd_from_fd(const char *pidfdstr)
    - int open_pidfd(const char *pidstr)
    - {
    -   int    proc_dir_fd;
    --  char   proc_dir_name[32];
    -+  char   proc_dir_name[PATH_MAX];
    -   pid_t  target;
    - 
    +@@ lib/get_pid.c: int open_pidfd(const char *pidstr)
        if (get_pid(pidstr, &target) == -1)
                return -ENOENT;
      
    --  /* max string length is 6 + 10 + 1 + 1 = 18, allocate 32 bytes */
     -  if (SNPRINTF(proc_dir_name, "/proc/%u/", target) == -1) {
     -          fprintf(stderr, "snprintf of proc path failed for %u: %s\n",
     +  if (SNPRINTF(proc_dir_name, "/proc/%d/", target) == -1) {