2.5.52-wli-1

From: William Lee Irwin III (wli@holomorphy.com)
Date: Tue Dec 17 2002 - 23:44:43 EST


Available from:
ftp://ftp.kernel.org/pub/linux/kernel/people/wli/kernels/2.5.52-wli-1/

Notable events:

(1) I switched to mainline releases since intermediate -bk snapshots
        vaporize after the following mainline release.
(2) The driverfs oops fix got merged.
(3) A new patch dynamically sizes the pidhash to save memory on tiny boxen.
(4) A new patch has a small experiment with pte_chain pointer block sizes.

01_numaq_io
                My NUMA-Q has PCI-PCI bridges and I've not quite gotten
                them working yet. Here's the workaround. If someone
                would be kind enough to make PCI segments not require
                3 cleanup passes and an accessor that changes semantics
                between each pass and after the last one I'd be much obliged.

02_do_sak
                Update __do_SAK() to use for_each_task_pid(). It was
                looking for all tasks in a given session.

03_proc_super
                Keep count of real processes (not threads) and don't
                walk the tasklist in proc_fill_super().

04_cap_set_pg
                Use for_each_task_pid() in cap_set_pg(). It's trying
                to find all tasks in a given pgrp.

05_vm86 Bugfix for not using release on exit() but instead
                scanning for a matching task pointer, which is oopsable.

06_uml_get_task
                get_task() is attempting to do find_task_by_pid().
                Call find_task_by_pid() and remove tasklist scanning.

07_numaq_mem_map
                Speed up NUMA-Q mem_map initialization by freeing
                higher-order pages during highpage init.

08_numaq_pgdat
                Allocate pgdat's from node-local memory on NUMA-Q.

09_has_stopped_jobs
                Remove the unused has_stopped_jobs() function and
                rename __has_stopped_jobs() to has_stopped_jobs().

10_inode_wait
                Increase the size of the inode wait table.

11_pgd_ctor
                Use slab ctor's to reduce the initialization costs of
                PAE pgd's and pmd's.

12_pidhash_size
                Dynamically size the pidhash hashtable at boot-time,
                proportional to memory. 128KB isn't used until 1GB RAM.
                Kernel BSS reduced by (almost) 128KB.

13_rmap_nrpte
                Try forcibly increasing NRPTE to just slightly above the
                mean pte_chain length for theoretically less allocation
                overhead and/or L2 cache footprint (note: they're already
>= L1_CACHE_BYTES). If this doesn't work, all you'll get
                is internal fragmentation (measurable by comparing the
                slab info to nr_reverse_maps).
                I'm not 100% sure I want to keep core VM stuff in here...
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