Well that's certainly the other option. Dig out the old
a_ops->reservepage stuff.
It _was_ Halloween 2003, wasn't it??
It would only work for filesystems which implement reservation
though, and iirc there were nasty problems doing delayed
allocation in, for example, ext3. I guess ext3 would have to
reserve journal space as well as disk space. ext2 delayed
allocation was pretty straightforward though, and most of
the infrastructure which it needed is there now. The replacement
of buffer-based writeback with page-based, mainly.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/