This is Al's implementation of the Orlov block allocator for ext2.

At least doubles the throughput for the traverse-a-kernel-tree
test and is well tested.

I still need to do the ext3 version.

No effort has been put into tuning it at this time, so more gains
are probably possible.

into home.transmeta.com:/home/torvalds/v2.5/linux

This allows subsystems to exist the hierarchy, but not be exported via
the filesystem. This fixes a minor flaw with partitions, as partition
objects are children of block devices, though they register with the 
partition subsystem. Really, the partition subsystem shouldn't have 
presence in the tree at all, yet still exist.

into home.transmeta.com:/home/torvalds/v2.5/linux

into home.transmeta.com:/home/torvalds/v2.5/linux

- replace driver_dir_entry in acpi_device with struct kobject.
- register acpi with firmware subsystem on startup.
- register sub-subsystem.
- put namespace hierarchy under that.

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

This patch adds a new device driver to the linux kernel.  It is for TV
cards based on the Philips SAA7134 chip.  It supports the v4l2 API and
thus depends on the v4l2 patches of the previous mails.

This updates the bttv driver.  Major changes are (a) adaptions to the
final v4l2 API and (b) lots of updates in the card-specific code.  There
are also various other small changes.

This is a update for the tv tuner module.  It makes the descriptions
more verbose and also has some minor bugfixes + cleanups.

This adds the v4l2 API to the linux kernel.

The first, original video4linux API has a number of design bugs.  They
are fixed in this new API revision.  It already exists for quite some
time.  Last weeks it got a number of cleanups based on the experiences
of the last years (drop stuff nobody uses, fix some inconsistencies).
We consider it being in a pretty good shape now and like to see it in
2.6.

This patch is basically the header file with all the structs and ioctls
in there.  A small module with some helper functions for v4l2 drivers is
included too.  Related updates (bttv, ...) will follow as separate
patches.

This updates the video-buf.c module (helper module for video buffer
management).  Some memory management fixes, also some adaptions to the
final v4l2 api.

This implements a pre-decoded wchan in /proc using kallsyms.  I.e.:

        [21:23:17]rml@phantasy:~$ cat /proc/1228/wchan
        wait4

Which, aside from being cool, means procps will not have to parse
Sysyem.map for each process.  In fact, procps will no longer require
System.map.

If CONFIG_KALLSYMS is not enabled, /proc/#/wchan does not exist to
conserve memory.  Regardless of CONFIG_KALLSYMS's value, the old wchan
field in /proc/#/stat still exists.

I have a procps patch I will merge once this is in your tree.

This adds hyper-threading information to /proc/cpuinfo, if relevant: the
physical processor id and the number of sibling units in this core.

The naming of the fields were debated a bit on lkml and the names below
offend the least number of people, do not break glibc, and are the same
as those in 2.4-ac.

This is in 2.4-ac, 2.5-mm, and vendor kernels from RedHat, SuSE, etc.

make x86_do_profile available when UP=y,LOCAL_APIC=n

From Bill Irwin

Optionally back priviled processes' shm with hugetlbfs.

One of the more common requests for and/or users of hugetlb interfaces
in general are databases using shm.  This patch exports functionality
mostly equivalent to tmpfs, adds the calling sequence to ipc/shm.c, and
hashes out a small support function in fs/hugetlbfs/inode.c so that shm
segments may be hugetlbpage-backed if userspace passes a flag to
shmget().

Access to this resource requires CAP_IPC_LOCK.

From Bill Irwin

Tiny hugetlbpage ram-backed filesystem.

Some way to export hugetlbfs through more standard system call
interfaces was needed, and hugetlbfs already had inodes with ratnodes
etc.  used to track offset -> page translations, so adding the rest of
a filesystem around it was easy and natural.  Most of it is identical
to ramfs, except ->f_op->mmap() is now just a wrapper around the
hugetlb_prefault() to fill in the VMA, and to simplify it,
->readpage(), ->prepare_write(), and ->commit_write() are omitted.

Permissions:

(1) check capable(CAP_IPC_LOCK) in ->f_ops->mmap
        This may be redundant but it errors out with less state to
        clean up and at least clarifies the fact that checks are
        being performed at the relevant entry points.

(2) check capable(CAP_IPC_LOCK) in hugetlbfs_zero_setup()
        This is called at shmget() time and is an actual potential
        security hole. hugetlb_prefault() does not perform this
        check itself, so it must be done here.

It's setting the page count on the wrong page.

huge_page_release()             -- hugepage refcounting
free_huge_page()                -- separates freeing from inode refcounting
unmap_hugepage_range()          -- unmapping refcounting hook when locked
zap_hugepage_range()            -- unmappping refcounting hook when unlocked
export setattr_mask()           -- hugetlbfs wants to call it
export destroy_inode()          -- hugetlbfs wants to use it
export unmap_vma()              -- hugetlbpage.c wants to use it
unlock_page() in hugetlbpage.c  -- fixes deadlock in hugetlbfs_truncate()

From Bill Irwin

Move hugetlb and hugetlbfs declarations into a dedicated header file.

Hugetlb's big #ifdeffed block in mm.h got a lot bigger with hugetlbfs.
This patch basically attempts to remove the noise from mm.h by simply
rearranging it into a new header, and fixing all users of hugetlb.

In order for hugetlbfs to operate, prefaulting the vma at mmap()-time
while simultaneously instantiating and performing lookups on its
ratcache entries is needed as an isolated operation.  This is
implemented as part of a different function within hugetlbpage.c that
ties it to inode and key lookup and allocation.

The following patch simply moves the code already present into its own
function, calls it, and makes it available for hugetlbfs to use.

On Wed, 30 Oct 2002, Aaron Lehmann wrote:
>
> Now running 'make oldconfig' or 'make menuconfig' requires a Qt
> installation. I believe that this is a bug because these still work
> fine without Qt when the -k flag is passed to make.

Yes, it's a bug. This fixes it without breaking xconfig.

Also, update path to look for devices in to reflect placement of block
subsystem at top level.

into osdl.org:/home/mochel/src/kernel/devel/linux-2.5-kobject

This patch adds ACL support to the ext2 filesystem.

This patch adds ACL support to the ext3 filesystem.

This patch provides converts extended attributes passed in from user
space to a generic Posix ACL representation.