seqlocks infinite loop

[Bahadir Balban <bahadir.balban@xxxxxxxxx>]

Hi,

When you use a seqlock as in:

do {
   seq = read_seqbegin(&seq_lock);

   do_operation();

} while(read_seqretry(&seq_lock, seq));


if do_operation() is long enough that a writer always updates seq
meanwhile, wouldn't you run into an infinite loop? (For instance if
you have one or more periodic writers.)

Can we say that we must ensure writers eventually give way to readers
of this sort?

Thanks,
Bahadir

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