2.5.38 long-format changelog

Summary of changes from v2.5.37 to v2.5.38
============================================

<davidm@tiger.hpl.hp.com>
	ia64: Minor cleanups.

<davidm@tiger.hpl.hp.com>
	ia64: First draft of perfmon sampling-interval randomization support.

<davidm@tiger.hpl.hp.com>
	ia64: Make sure register-backing store gets mapped with the right PTE protection bits.
		This is a fix for a performance-bug reported by Jack Steiner.

<davidm@tiger.hpl.hp.com>
	ia64: Fix return path of signal delivery for sigaltstack() case.

<davidm@tiger.hpl.hp.com>
	ia64: Fix narrow window during which signal could be delivered with only the memory
		stack switched over to the alternate signal stack.

<davidm@tiger.hpl.hp.com>
	Fix edge-triggered IRQ handling.  See Linus's cset 1.611 for details.

<davidm@tiger.hpl.hp.com>
	ia64: Fix comment in arch/ia64/kernel/signal.c.

<davidm@tiger.hpl.hp.com>
	ia64: Fix x86 struct ipc_kludge (reported by R Sreelatha, fix proposed by
		Dave Miller).

<efocht@ess.nec.de>
	[PATCH] Remove global semaphore_lock for ia64, similar to i386 change for 2.5.25
	

<davidm@tiger.hpl.hp.com>
	ia64: Preserve f11-f15 around calls into firmware.  Patch by John Marvin.

<eranian@hpl.hp.com>
	[PATCH] ia64: perfmon update
	
	Here is what I got so far on perfmon for 2.5.31. It includes:
	
	- your randomization patch with some rework to make it visible to user.
	  (your existing program does not need to change or recompilation).
	
	- 3 error conditions cleanups, a missing unlock fix
	
	- copy_*user() replaced with __copy_*_user() or get/put user when appropriate.
	  (This gives us a 15% speed improvement on PFM_READ_PMDS).
	
	- sys_perfmonctl(), only check for read-only OR read-write arguments
	  (read and write are not separated anymore)
	
	- Non 64-bit overflow do not reset hardware pmd to zero anymore: not needed
	
	- incorporated changes from 2.4.18/9: debug registers when used are
	  all restored on ctxsw in.
	
	- added automatic reset on inheritance, no more PMU specific knowledge.

<davidm@tiger.hpl.hp.com>
	ia64: Dont execute srlz.d needlessly (reported by Chris Ruemmler).

<davidm@tiger.hpl.hp.com>
	ia64: Fix typo in perfmon.c.  (Patch by Stephane Eranian.)

<fenghua.yu@intel.com>
	[PATCH] Optimize __ia64_save_fpu() and __ia64_load_fpu() for Itanium 2.
	

<davidm@tiger.hpl.hp.com>
	ia64: Sync up with 2.5.35+.  Add ia64-specific huge page support (by Rohit Seth).
		Support new clone2() functionality (CLONE_SETTLS, CLONE_SETTID, & CLONE_CLEARTID).

<davidm@tiger.hpl.hp.com>
	ia64: Make include/asm-ia64/suspend.h non-empty (suggested by Keith Owens).

<eranian@hpl.hp.com>
	[PATCH] perfmon cleanup patch
	
	This patch includes:
	        - nasty macro bug fix for  PMC_IS_MONITOR()
	        - pfm_stats is now per CPU
	        - pmu_owners[] is not cache line aligned to avoid false sharing
	        - cleanup in /proc/perfmon
	        - rewritten pfm_write_pmcs(), pfm_write_pmds() with correct semantics
	        - all copy_*user() are gone
	        - we do not walk the tasklist in UP mode for system-wide: now
	          unified with SMP

<shaggy@kleikamp.austin.ibm.com>
	JFS: Avoid parallel allocations within the same allocation group
	
	When large files are writting in parallel, allocating the space for
	these files within the same allocation group can cause severe
	fragmentation of the files.  By keeping track of open, growing files
	within an allocation group, we can force other new allocations into
	a different allocation group to avoid this.

<shaggy@kleikamp.austin.ibm.com>
	JFS: Slightly relax allocation group reservation
	
	Minor change that got missed in the last changeset.  If opening a
	non-empty file for writing, don't assume we're allocating new space.
	If the file is grown, we'll take care of it then.

<davidm@tiger.hpl.hp.com>
	ia64: Add arch/ia64/mm/hugetlbpage.c by Rohit Seth.

<davidm@tiger.hpl.hp.com>
	ia64: A few huge page fixes (patch by Rohit Seth).

<eranian@hpl.hp.com>
	[PATCH] Fix bug in pfm_write_pmds().
	
	I found a bug in the new pfm_write_pmds() routine in 2.5.35.
	Sampling does not work unless you apply the attached patch.

<agrover@groveronline.com>
	ACPI: change a non-critical debug message to a lower output level

<felipewd@terra.com.br>
	Add support for get-MII-data ioctls in 8139cp net driver

<jgarzik@mandrakesoft.com>
	Add new MII lib functions mii_check_link, mii_check_media.
	Use them in 8139cp.

<davidm@tiger.hpl.hp.com>
	ia64: Fix zx1-platform support.

<elenstev@mesatop.com>
	Link eepro100 net driver with mii module, fixing static build

<davidm@tiger.hpl.hp.com>
	ia64: Sync with 2.5.37.

<torvalds@home.transmeta.com>
	Don't try to attach a driver to a pci device that already has one.

<axboe@suse.de>
	[PATCH] IDE fixes
	
	starting from 2.5.35 IDE stopped working on my alphas because of
	following problems:
	
	- ide_hwif_configure() ignores BARs for IDE base/control registers
	  and assumes legacy 0x1f0/0x170 ports, unless controller reports
	  native PCI mode (ProgIf bits 0 and 2).
	
	  This is incorrect, as there are quite a few IDE chips operating
	  in "semi-legacy" mode, i.e. legacy interrupts, but functional
	  BAR0-3, like cy82c693 and ali5229. I guess Andre could give a lot
	  more examples. :-)
	
	  This happens to work on i386 simply because BIOS usually assigns
	  legacy values to BAR0-3, but we can't rely on it.
	
	  Just checking respective resource->start for zero should work in
	  all cases.
	
	- ide_pci_check_iomem(): resource->flags == 0 means "unconfigured" as well.
	  Thus we avoid false positives.
	
	- Apparently cut'n'paste typo in cy82c693.c - wrong PCI IDs.

<mochel@osdl.org>
	[PATCH] Adding driver model support in IDE
	
	This adds the basic driver model support for the IDE subsystem.
	
	Basically, it registers the controllers and devices with the driver
	model core, which puts them in the device tree and gets them a directory
	in driverfs.  The driverfs layout looks like this (on my workstation):
	
		[mochel@cherise mochel]$ tree -d /sys/root/pci0/
		/sys/root/pci0/
		|-- 00:00.0
		|-- 00:01.0
		|   `-- 01:00.0
		|-- 00:02.0
		|   `-- 02:1f.0
		|       `-- 03:00.0
		|-- 00:1e.0
		|   `-- 04:04.0
		|-- 00:1f.0
		|-- 00:1f.1
		|   |-- ide0
		|   |   |-- 0.0
		|   |   `-- 0.1
		|   `-- ide1
		|       |-- 1.0
		|       `-- 1.1
	
	The drive bus IDs (the directory names)  are created using this:
	
		sprintf(bus_id,"%u.%u",hwif->index,unit);
	
	which should give each drive a unique name for the entire system, right?
	
	I've also created a struct bus_type for IDE, which gives ide a directory
	in the driverfs bus/ directory. The layout of that is:
	
		[mochel@cherise mochel]$ tree -d /sys/bus/ide/
		/sys/bus/ide/
		|-- devices
		|   |-- 0.0 -> ../../../root/pci0/00:1f.1/ide0/0.0
		|   |-- 0.1 -> ../../../root/pci0/00:1f.1/ide0/0.1
		|   |-- 1.0 -> ../../../root/pci0/00:1f.1/ide1/1.0
		|   `-- 1.1 -> ../../../root/pci0/00:1f.1/ide1/1.1
		`-- drivers
	
	Those are symlinks under devices/ (which is why the drive names must be
	unique..). When drivers are registered with the IDE core, they should also
	be passed through the core, which will give them a directory in the
	drivers/ directory just above.
	
	In general, there is a bit of code that can be cleaned up, and some
	explicit calls removed, because of the way the driver model core works.
	Most of these are pretty simple, and barring any objections, I will
	implement and send them to you.

<vandrove@vc.cvut.cz>
	Fix NCP_IOC_SETOBJECTNAME ioctl in ncpfs.

<vandrove@vc.cvut.cz>
	Fix bigendian problems in ncpfs.

<shaggy@kleikamp.austin.ibm.com>
	JFS: swsusp support

<vandrove@vc.cvut.cz>
	Add support for text mount option string to ncpfs.

<shaggy@kleikamp.austin.ibm.com>
	JFS: Put legacy OS/2 extended attributes in "os2." namespace
	
	Existing OS/2 extended attributes are stored without a namespace
	prefix.  To avoid polluting the linux namespace, prepend "os2." when
	listing the EAs but store "os2." EA names without the prefix.
	
	Also disallow setting extended attributes that don't begin with
	"user." or "os2."

<agrover@groveronline.com>
	ACPI: Add include to provide PREFIX (Adrian Bunk)

<agrover@groveronline.com>
	ACPI: Re-enable compilation of ACPI subordinate drivers as modules
	(Bjoern A. Zeeb)

<vandrove@vc.cvut.cz>
	ncpfs: Proper handling of watchdog packets. 
	ncpfs: Add support for packet signatures when using TCP transport.

<shaggy@kleikamp.austin.ibm.com>
	JFS: Fix compiler errors in xattr.c
	
	Fix errors due to header differences between mainline kernel and
	acl.bestbits.org patches.

<vandrove@vc.cvut.cz>
	ncpfs: Verify packet signatures on replies.

<vandrove@vc.cvut.cz>
	ncpfs: Pass unknown packets from server to userspace daemon. Now we can
	deliver server messages to logged-in users even with UDP or TCP transport.

<rml@tech9.net>
	[PATCH] schedule() in_atomic() check
	
	This makes the in_atomic() check in schedule() actually work.  You
	merged the PREEMPT_ACTIVE bits, we just need to handle the exit() case
	correctly.

<torvalds@kiwi.transmeta.com>
	Fix vm86 system call interface to entry.S. This has been broken
	since the thread_info support went in (early July), and can cause
	lockups at X startup etc.

<davidm@tiger.hpl.hp.com>
	ia64: Reorganize initialization sequence a bit.

<jt@hpl.hp.com>
	Fix wavelan_cs net driver build

<jt@hpl.hp.com>
	update irda nsc-ircc driver:
	o [FEATURE] Cleanly change speed back to 9600bps
	o [CORRECT] Change speed under spinlock/irq disabled
	o [CORRECT] Make sure interrupt handlers don't mess irq mask
	o [CORRECT] Don't change speed if we haven't fully finished to Tx

<jt@hpl.hp.com>
	More __FUNCTION__ cleanups for IrDA

<davem@redhat.com>
	[PATCH] missing unlock_kernel
	
	I discovered this while auditing a large part of the remaining
	lock_kernel users in the 2.5.x tree.

<jgarzik@mandrakesoft.com>
	Fix more IrDA __FUNCTION__ breakage.  It now builds, yay.

<davidm@tiger.hpl.hp.com>
	ia64: Switch over to using ACPI PCI support routines.  This gets rid of much of the
		code-duplication that existed between ACPI and the ia64 IOSAPIC code.
		To make this work, the Makefiles had to be re-organized to ensure that
		the ACPI subsystem is initialized before PCI (even though both are called
		via subsys-initcalls).

<viro@math.psu.edu>
	[PATCH] gendisk for pcd
	
	pcd switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for cdu31a
	
	cdu31a switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for cm206
	
	cm206 switched to use of gendisk, failure path in module_init cleaned up

<viro@math.psu.edu>
	[PATCH] gendisk for mcd
	
	mcd switched to use of gendisk, failure path in module_init cleaned up

<viro@math.psu.edu>
	[PATCH] gendisk for mcdx
	
	mcdx switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for sbpcd
	
	sbpcd switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] devfs handling for cdroms moved to register_disk()
	
	devfs-related stuff moved from cdrom.c and cdrom drivers to register_disk();
	new flag (GENHD_FL_CD) marks gendisks that need such treatment.

<viro@math.psu.edu>
	[PATCH] misc cleanups
	
	assorted minor cleanups

<viro@math.psu.edu>
	[PATCH] gendisk for jsflash
	
	jsflash switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for mtdblock_ro
	
	mtdblock_ro switched to use of gendisk, both mtdblock.c and mtdblock_ro.c
	slightly cleaned up.

<viro@math.psu.edu>
	[PATCH] crapectomy in pf.c - part 1
	
	beginning of macroectomy in pf.c: RR and WR macros replaced with saner
	inlines a-la pcd.c

<viro@math.psu.edu>
	[PATCH] Lindent pf.c
	
	pf.c fed through lindent

<viro@math.psu.edu>
	[PATCH] gendisk for pf.c
	
	pf switched to use of gendisk and cleaned up - we pass pointers to structures
	instead of minors now.

<viro@math.psu.edu>
	[PATCH] switch to add_disk()
	
	Almost all callers of add_gendisk() were immediately followed by
	register_disk(disk, mk_kdev(disk->major,disk->first_minor),
		      1<<disk->minor_shift, disk->fops, something);
	The only exception (DAC960.c) massaged to that form.
	New helper (add_disk(disk)) introduced and aforementioned sequence
	replaced with
		set_capacity(disk, something);
		add_disk(disk);

<viro@math.psu.edu>
	[PATCH] removal of bogus exports
	
	partition_name() moved from md.c to partitions/check.c; disk_name() is not
	exported anymore; partition_name() takes dev_t instead of kdev_t.

<viro@math.psu.edu>
	[PATCH] beginning of probe_disk() and gendisks for floppy
	
	That's a tricky one and large part of that stuff is temporary - it will be
	replaced as soon as we have gendisks for all block devices and get sane
	refcounting for gendisks.
		* we add per-major lists of gendisks; get_gendisk() looks into
	appropriate list instead of looking through the list of all gendisks.
		* we allow driver to override that search - it can call
	blk_set_probe(major, probe) and then gendisk will call probe(minor).
	blk_set_probe(major, NULL) restores the default behaviour.
		* floppy.c switched to use of gendisks; we have one gendisk per
	disk and let floppy_find(minor) return the right one.
		Note that final mechanism will involve a similar construction
	but floppy.c is actually the least interesting application - places
	where it will really play will include stuff like loading the right
	high-level driver when we open /dev/hdX, etc.  And it won't be major-based...

<viro@math.psu.edu>
	[PATCH] gendisk for swim3
	
	swim3 switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for loop
	
	loop switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for aztcd
	
	aztcd switched to use of gendisk; missing initcall restored (aztcd_init()
	and friends used to be called directly from blk_dev_init(); apparently
	the first step of bio merge had killed these calls but left module_init() in
	these drivers under #ifdef MODULE).

<viro@math.psu.edu>
	[PATCH] gendisk for gscd
	
	gscd switched to use of gendisk; missing initcall restored

<viro@math.psu.edu>
	[PATCH] gendisk for optcd
	
	optcd switched to use of gendisk; missing initcall restored

<viro@math.psu.edu>
	[PATCH] gendisk for sjcd
	
	sjcd switched to use of gendisk; missing initcall restored

<viro@math.psu.edu>
	[PATCH] gendisk for sonycd
	
	sonycd switched to use of gendisk; missing initcall restored

<viro@math.psu.edu>
	[PATCH] gendisk for stram
	
	stram switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for rd
	
	rd switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for nbd
	
	nbd switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for xpram
	
	xpram switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for acorn floppy
	
	acorn floppy switched to use of gendisk

<viro@math.psu.edu>
	[PATCH] gendisk for swim_iop
	
	swim_iop switched to use of gendisk

<torvalds@home.transmeta.com>
	Don't do a 64-bit divide when a simple shift will do..

<fletch@aracnet.com>
	[PATCH] free_area_init_node fix (for non discontigmem direct use)
	
	Some idiot (OK, it was me) broke free_area_init_node for
	non discontigmem systems that call it directly (eg sparc64),
	during a recent cleanup, thus invoking the wrath of DaveM.
	
	I know Dave sent you a patch yesterday, but I think the BUG
	statement in it will break anyone who just uses free_area_init
	(eg any PC). So here's a portion of Dave's patch that should
	fix things for everyone I think. Unfortunately my non-NUMA
	test box is borked right now, but it just removes the BUG
	statement from what he tested, and it's so simple that even
	I couldn't screw this up (famous last words).
	
	This code really needs some more cleanup work, but this will
	fix it for now so everyone can do their work ...

<torvalds@home.transmeta.com>
	Avoid confusion "mount" and "fsck" - don't show things like
	floppies and CD's in /proc/partitions.

<torvalds@home.transmeta.com>
	Linux v2.5.38