Neil Brown <[email protected]> wrote:
>
> ...
> Reduce stack usage with stacked block devices
>
> ...
> diff ./include/linux/sched.h~current~ ./include/linux/sched.h
> --- ./include/linux/sched.h~current~ 2005-11-07 10:01:36.000000000 +1100
> +++ ./include/linux/sched.h 2005-11-07 10:02:23.000000000 +1100
> @@ -829,6 +829,9 @@ struct task_struct {
> /* journalling filesystem info */
> void *journal_info;
>
> +/* stacked block device info */
> + struct bio *bio_list, **bio_tail;
> +
> /* VM state */
> struct reclaim_state *reclaim_state;
>
More state in the task_strut is a bit sad, but not nearly as sad as deep
recursion in our deepest codepath..
Possibly one could do:
struct make_request_state {
struct bio *bio_list;
struct bio **bio_tail;
};
and stick a `struct make_request_state *' into the task_struct and actually
allocate the thing on the stack. That's not much nicer though.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]