Re: something really screwed up with mmap+ffs on 5.0_STABLE

[der Mouse <mouse%Rodents-Montreal.ORG@localhost>]

> The only difference between the two programs is this:
> #if 1
>         read(fd, buf, BUFSIZE);
>         bmem = (void *)buf;
> #else
>         busmem = mmap(NULL, sb.st_size, PROT_READ, MAP_FILE|MAP_SHARED, fd, 
> 0);
>         if (busmem == MAP_FAILED)
>                 err(1, "mmap");
>         bmem = busmem;
> #endif

Any particular reason to error-check mmap but not read?

Any particular reason to read BUFSIZE bytes but mmap sb.st_size bytes?

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