iNotify multiple read - c++

Question

I use the following code to monitor a file using I notify. I first poll and then read if there is a change to prevent blocking:
int settingsCheck(int &length, int &i, char * buffer, int &fd, string setRead[])
{
int f_change = 0;
struct pollfd pfd = { fd, POLLIN, 0 };
/* Poll with a timeout of 100ms */
int ret = poll(&pfd, 1, 100);
/* Check to see the result of the poll */
if (ret < 0) {
fprintf(stderr, "Poll failed: %s\n", strerror(errno));
}
else if (ret == 0) {
/* Timeout with no events -> move on */
}
else {
/* Process the new event */
struct inotify_event event;
length = read(fd, buffer, BUF_LEN);
printf("read\n");
while (i < length)
{
struct inotify_event *event = (struct inotify_event *) &buffer[i];
if (event->len)
{
if (event->mask & IN_MODIFY && event->name == "setitngs.txt")
{
printf("The file %s was modified.\n", event->name);
//f_change = 1;
}
else if(event->mask & IN_MODIFY)
{
printf("Not settings\n");
}
}
i += EVENT_SIZE + event->len;
}
readSettings(setRead);
return 1;
}
return 0;
}
When I modify the text file being monitored (which is modified by a php script), my program reads the file multiple times (2-4), sometimes only reading the correct data on the final read.
Does anyone know why this happens / how to fix it?
PS: I am correct in saying that if I call the readSettings() function inside the following if:
if (event->mask & IN_MODIFY && event->name == "setitngs.txt")
then readSettings() should be called only once when "settings.txt" is monitored?