Messages in this thread | | | Date | Mon, 20 Jun 2005 23:54:58 -0700 | From | Andrew Morton <> | Subject | -mm -> 2.6.13 merge status |
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This summarises my current thinking on various patches which are presently in -mm. I cover large things and small-but-controversial things. Anything which isn't covered here (and that's a lot of material) is probably a "will merge", unless it obviously isn't.
(If you reply to this email it would be a good idea to alter the Subject: to reflect which feature you are discussing)
git-ocfs
The OCFS2 filesystem. OK by me, although I'm not sure it's had enough review.
sparsemem
OK by me for a merge. Need to poke arch maintainers first, check that they've looked at it sufficiently closely.
vm-early-zone-reclaim
Needs some convincing benchmark numbers to back it up. Otherwise OK.
avoiding-mmap-fragmentation
Tricky. Addresses vm area fragmentation issues due to recent optimisations to the free-area lookup code. Will merge.
periodically-drain-non-local-pagesets
Will merge
pcibus_to_node and users
Will merge
CONFIG_HZ for x86 and ia64: changes default HZ to 250, make HZ Kconfigurable.
Will merge (will switch default to 1000 Hz later if that seems necessary)
dmi-*.patch
Will merge. I have a comment "The below break x440". Maybe it got fixed. We'll doubtless hear if not.
xen-*.patch
These are little cleanups and abstractions which make a Xen merge easier. May as well merge them.
CPU hotplug for x86 and x86_64
Not really useful on current hardware, but these provide infrastructure which some power management patches need, and it seems sensible to make the reference architecture support hotplug. Will merge.
swsusp-on-SMP
Will merge.
cfq version 3
Not sure. Jens seems to be setting up a few git trees. On hold.
RCUification of the key management code
Don't know - dhowells seemed diffident last time we discussed this.
timers-fixes-improvements.patch
SMP speedups for the core timer code. It was bumpy, but this seems stable now. Will merge.
kprobes-*
Will merge
rapidio-*
Will merge.
namespace*.patch
Awaiting viro ack.
xtensa architecture
Is xtensa now, or will it be in the future a sufficiently popular architecture to justify the cost of having this code in the tree?
Heaven knows. Will merge.
dlm-*.patch: Red Hat distributed lock manager
Hard. Right now it seems that no in-kernel projects will use this and only one out-of-kernel project will use it. Shelve the problem until after Kernel Summit, where some light may be shed.
Opinions are sought...
connector.patch
Nice idea IMO, but there are still questions around the implementation. More dialogue needed ;)
connector-add-a-fork-connector.patch
OK, but needs connector.
inotify
There are still concerns about the userspace API and internal implementation details. More slogging needed.
pcmcia-*.patch
Makes the pcmcia layer generate hotplug events and deprecates cardmgr. Will merge.
NUMA-aware slab allocator
Seems stable now, but it needs some ifdef reduction work before merging, please.
CPU scheduler
Will merge some of these patches. We're still discussing which ones.
perfctr
Not yet, but getting closer. The PPC64 guys still need to sort out a few interface issues with Mikael. We might be able to fit this into 2.6.13 if people get a move on.
cachefs
This is a ton of code which knows rather a lot about pagecache internals. It allows the AFS client to cache file contents on a local blockdev.
I don't think it's a justified addition for only AFS and I'd prefer to see it proven for NFS as well.
Issues around add-page-becoming-writable-notification.patch need to be resolved.
cachefs-for-nfs
A recent addition. Needs review from NFS developers and considerably more testing.
These things aren't looking likely for 2.6.13.
kexec and kdump
I guess we should merge these.
I'm still concerned that the various device shutdown problems will mean that the success rate for crashing kernels is not high enough for kdump to be considered a success. In which case in six months time we'll hear rumours about vendors shipping wholly different crashdump implementations, which would be quite bad.
But I think this has gone as far as it can go in -mm, so it's a bit of a punt.
reiser4
Merge it, I guess.
The patches still contain all the reiser4-specific namespace enhancements, only it is disabled, so it is effectively dead code. Maybe we should ask that it actually be removed?
v9fs
I'm not sure that this has a sufficiently high usefulness-to-maintenance-cost ratio.
fuse
This is useful, but there are, AFAIK, two issues:
- We're still deadlocked over some permission-checking hacks in there
- It has an NFS server implementation which only works if the to-be-served file happens to be in dcache.
It has been said that a userspace NFS server can be used to get full NFS server functionality with FUSE. I think the half-assed kernel implementation should be done away with.
execute-in-place
Will merge. Have the embedded guys commented on the usefulness of this for execute-out-of-ROM?
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