On Mon, Jan 28, 2008 at 04:25:00AM -0800, Paul E. McKenney wrote:
> Hello!
>
> The list_for_each_entry_rcu() primitive should be used instead of
> list_for_each_rcu(), as the former is easier to use and provides
> better type safety. This patch therefore adds list_for_each_rcu()
> to the Documentation/feature-removal-schedule.txt file (for mid-2008)
> and marks its comment header deprecated.
>
> Signed-off-by: Paul E. McKenney <[EMAIL PROTECTED]>
> ---
>
> Documentation/feature-removal-schedule.txt | 10 ++++++++++
> include/linux/list.h | 5 ++++-
> 2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff -urpNa -X dontdiff
> linux-2.6.24/Documentation/feature-removal-schedule.txt
> linux-2.6.24-dep-lfeRCU/Documentation/feature-removal-schedule.txt
> --- linux-2.6.24/Documentation/feature-removal-schedule.txt 2008-01-24
> 14:58:37.000000000 -0800
> +++ linux-2.6.24-dep-lfeRCU/Documentation/feature-removal-schedule.txt
> 2008-01-28 04:00:49.000000000 -0800
> @@ -333,3 +333,13 @@ Why: This driver has been marked obsolet
> Who: Stephen Hemminger <[EMAIL PROTECTED]>
>
> ---------------------------
> +
> +What: list_for_each_rcu() primitive
> +When: July 2008
> +Files: include/linux/list.h
> +Why: The list_for_each_entry_rcu() primitive should be used instead,
> + as it is less error-prone and provides better type safety.
> +Who: Paul E. McKenney <[EMAIL PROTECTED]>
>...
Declaring something as deprecated doesn't automatically convert the
in-kernel users.
And once there are no in-kernel users left you can kill it immediately.
The only working way for getting rid of list_for_each_rcu() is:
- send patches for all in-kernel usages to the maintainers of the code
in question now
- once all of these patches have entered Linus' tree (which might not
be before the 2.6.26 merge window) you can remove list_for_each_rcu()
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
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