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2.5.33 long-format changelog
Summary of changes from v2.5.32 to v2.5.33
============================================
<rgooch@atnf.csiro.au>
base.c:
Exported <devfs_find_and_unregister> to modules
<rgooch@atnf.csiro.au>
base.c:
Exported devfs_only()
<thockin@freakshow.cobalt.com>
Add Cobalt Networks support to nvram driver
export nvram interfaces
general cleanup of nvram driver
protect nvram state with a lock
fix nvram O_EXCL hack to actually work
<aia21@cantab.net>
NTFS: Add configuration option for developmental write support.
<aia21@cantab.net>
NTFS: Initial implementation of mmap(2) based overwriting
of existing files on ntfs. (Note: Resident files are not
supported yet, so avoid writing to files smaller than 1kiB.)
<aia21@cantab.net>
NTFS: Fix silly bug in ntfs_write_block(). iblock and dblock have
different semantics so the check was bogus. Compare the byte sizes
instead.
<aia21@cantab.net>
NTFS: Cleanups, mostly whitespace. Found during resync with 2.4 backport.
<agrover@groveronline.com>
Add arch-neutral support for parsing SLIT and SRAT tables (Kochi Takayoshi)
<jgrimm@touki.qip.austin.ibm.com>
lksctp-2_5_31-0_5_1.patch
<aia21@cantab.net>
NTFS: Initial implementation of write(2) based overwriting of existing
files on ntfs. (Note: Resident files are not supported yet, so avoid
writing to files smaller than 1kiB.)
<agrover@groveronline.com>
There are a few problems with ACPI init. One of these is that acpi=off
will disable the ACPI interpreter init, but not stop the OS from using
ACPI tables for finding CPUs and IOAPICs. Another problem is that if we
use the tables, but then the interpreter fails to init, we are in deep
trouble, because it is too late to revert to using MPS, but we cannot get
_PRT info without the interpreter.
This changeset doesn't fix the latter problem, but it does at least make
"acpi=off" actually do what it says, and not use the ACPI interpreter *or*
the tables.
<agrover@groveronline.com>
local_irq_disable is extraneous (Matthew Wilcox)
<davidm@tiger.hpl.hp.com>
ia64: Remove unnecessary <linux/config.h> include.
<james@cobaltmountain.com>
[PATCH] arch_ia64_sn_io_sn1_pcibr.c, typo: the the
<james@cobaltmountain.com>
[PATCH] include_asm-ia64_sal.h, typo: the the
<james@cobaltmountain.com>
[PATCH] include_asm-ia64_sn_alenlist.h, typo: the the
<agrover@groveronline.com>
Ensure that the ACPI interrupt has the proper trigger and polarity
<aia21@cantab.net>
NTFS: 2.1.0 - First steps towards write support: implement file overwrite.
- Add configuration option for developmental write support with an
appropriately scary configuration help text.
- Initial implementation of fs/ntfs/aops.c::ntfs_writepage() and its
helper fs/ntfs/aops.c::ntfs_write_block(). This enables mmap(2) based
overwriting of existing files on ntfs. Note: Resident files are
only written into memory, and not written out to disk at present, so
avoid writing to files smaller than about 1kiB.
- Initial implementation of fs/ntfs/aops.c::ntfs_prepare_write(), its
helper fs/ntfs/aops.c::ntfs_prepare_nonresident_write() and their
counterparts, fs/ntfs/aops.c::ntfs_commit_write(), and
fs/ntfs/aops.c::ntfs_commit_nonresident_write(), respectively. Also,
add generic_file_write() to the ntfs file operations (fs/ntfs/file.c).
This enables write(2) based overwriting of existing files on ntfs.
Note: As with mmap(2) based overwriting, resident files are only
written into memory, and not written out to disk at present, so avoid
writing to files smaller than about 1kiB.
- Implement ->truncate (fs/ntfs/inode.c::ntfs_truncate()) and
->setattr() (fs/ntfs/inode.c::ntfs_setattr()) inode operations for
files with the purpose of intercepting and aborting all i_size
changes which we do not support yet. ntfs_truncate() actually only
emits a warning message but AFAICS our interception of i_size changes
elsewhere means ntfs_truncate() never gets called for i_size changes.
It is only called from generic_file_write() when we fail in
ntfs_prepare_{,nonresident_}write() in order to discard any
instantiated buffers beyond i_size. Thus i_size is not actually
changed so our warning message is enough. Unfortunately it is not
possible to easily determine if i_size is being changed or not hence
we just emit an appropriately worded error message.
<aia21@cantab.net>
NTFS: Add ifdef NTFS_RW arround ntfs_truncate and ntfs_setattr.
<rgooch@atnf.csiro.au>
Exported devfs_find_and_unregister() and devfs_only() to modules
Updated README from master HTML file
Fixed module unload race in devfs_open()
<jgrimm@touki.austin.ibm.com>
Support MSG_ABORT (the abort primitive) to do a non-graceful shutdown of an association.
<agrover@groveronline.com>
ACPI Remove unused file
<jgrimm@touki.austin.ibm.com>
Update statetable for prm ABORT and prm SHUTDOWN in the closed state (this should turn into an error just like we do in prm SEND).
<t-kouchi@mvf.biglobe.ne.jp>
[PATCH] ia64: IRQ cleanup patch for 2.5.30
This is updated cleanup patch against 2.5.30 (+ David's and Kimi's patch).
1) reformatted the source according to the recommendation,
2) fixed remaining iosapic_register_irq -> iosapic_register_intr in acpi.c
3) updated iosapic.c comment
4) made irq variables from int to unsigned int in iosapic.c, irq.c
While I'm looking at set_irq_affinity_info() in irq.c,
I found parse_hex_value is defined to return unsigned int while
it returns -EFAULT. 4) includes a fix for this.
<davem@pizda.ninka.net>
[OpenPROM]: Fix signedness/user-access checking bugs in openprom char driver and openpromfs.
<davem@pizda.ninka.net>
fs/openpromfs/inode.c: Prevent overflow of sprintf buffer.
<davem@pizda.ninka.net>
fs/openpromfs/inode.c: Prevent unsigned roll-over in size of kmalloc.
<davem@nuts.ninka.net>
[SPARC64]: Ultra-III+ updates and better error trap logging
- Treat all Sun chips with implementation >= 0x0015 as cheetah+
- For tl>1 logging, record the trap type register as well
<davem@nuts.ninka.net>
arch/sparc64/kernel/traps.c: Add spitfire_ prefix to clean_and_reenable_l1_caches, BUG on non-spitfire cpus.
<davidm@wailua.hpl.hp.com>
ia64: Delete include/asm-ia64/efi.h (it got moved to include/linux).
<Matt_Domsch@Dell.com>
[PATCH] ia64: update files for efi.h move from include/asm-ia64 to include/linux
<davem@nuts.ninka.net>
arch/sparc64/kernel/irq.c: Kill reference to dead linux/kbd_ll.h
<davem@pizda.ninka.net>
fs/openpromfs/inode.c: Better fixes for overflow.
<davem@nuts.ninka.net>
[INPUT]: Add EBUS/ISA speaker input driver for Sparc.
<davem@nuts.ninka.net>
include/asm-sparc64/pgalloc.h: Include linux/mm.h
<davem@nuts.ninka.net>
drivers/char/keyboard.c: Add sparc{32,64} emulate_raw support.
<davem@nuts.ninka.net>
drivers/serial/Config.in: It is CONFIG_SPARC32 not CONFIG_SPARC.
<davem@nuts.ninka.net>
drivers/input/misc/Config.in: It is CONFIG_SPARC32 not CONFIG_SPARC.
<davem@nuts.ninka.net>
drivers/char/keyboard.c: Merge in Vojtech fixes plus add Sparc raw support.
<davem@nuts.ninka.net>
arch/sparc64/kernel/setup.c: Kill duplicate kbd_sysrq_xlate
<greg@kroah.com>
USB: added new pl2303 device, thanks to Tasos Chronis <tasosc@otenet.gr>
<greg@kroah.com>
USB: ipaq driver: fixed __FUNCTION__ usages
<greg@kroah.com>
USB: usbserial core: fixed __FUNCTION__ usages.
also changed the license to be GPL v2 only.
<greg@kroah.com>
USB: visor driver: fixed __FUNCTION__ usages
<greg@kroah.com>
USB: whiteheat driver: fixed __FUNCTION__ use
<david-b@pacbell.net>
[PATCH] Documentation/usb/{o,u}hci.txt
This updates the EHCI and OHCI writeups. OHCI hadn't been
updated forever.
<spse@secret.org.uk>
[PATCH] more typedef removal from usbvideo
This patch removes some more typedefs from usbvideo and related files
typedef struct { .. } RingQueue_t -> struct RingQueue
typedef struct { .. } usbvideo_sbuf_t -> struct usbvideo_sbuf
typedef struct { .. } usbvideo_frame_t -> struct usbvideo_frame
typedef struct { .. } usbvideo_statistics_t -> struct usbvideo_statistics
typedef struct { .. } usbvideo_cb_t -> struct usbvideo_cb
<davem@nuts.ninka.net>
[SPARC]: Define CONFIG_HW_CONSOLE.
<davem@nuts.ninka.net>
[SPARC64]: Add dummy kmap_types.h for sake of fs/aio.c
<davidm@tiger.hpl.hp.com>
ia64: Fix I/O macros in asm-ia64/io.h. Based on patch by Andreas Schwab.
<greg@kroah.com>
USB: ftdi_sio driver: fixed __FUNCTION__ usages
<greg@kroah.com>
USB: keyspan_pda driver: fixed __FUNCTION__ usages.
<davidm@tiger.hpl.hp.com>
ia64: Initial sync with 2.5.32.
<scott.feldman@intel.com>
e100 net driver update 1/4:
o Cleanup: sync with driver in 2.4.20-pre4. includes small cleanups,
and a security fix.
<scott.feldman@intel.com>
e100 net driver update 2/4:
o Feature: added e100 GREGS register dump for ethtool
o Bug fix: promiscuous mode was broken
o Bug fix: register ethx as name when requesting interrupt.
o Bug fix: ARP WOL fails
<scott.feldman@intel.com>
e100 net driver update 3/4:
(yay!)
o Changed license from Dual BSD/GPL to GPL
<scott.feldman@intel.com>
e100 net driver update 4/4:
o Bug fix: ethernet bridging not working
o Bug fix: mii-diag does not update driver's speed,
duplex, and flow control
o Bug fix: ethtool shows wrong speed/duplex when not connected
o Bug fix: ethtool shows wrong speed/duplex when reconnected if
forced speed/duplex
o Bug fix: ethtool PHY loopback diagnostic fails
<davem@nuts.ninka.net>
[SPARC]: Finish conversion of sbusfb drivers to new fbcon API.
<scott.feldman@intel.com>
e1000 net driver update 1/6:
o Forward port of changes from 2.4.20-pre4:
o ethtool security fixes from Alan Cox
o usec_delay to udelay (Jeff Garzik)
o #include <linux/sched.h> for Alpha (Jeff Garzik)
<scott.feldman@intel.com>
e1000 net driver update 2/6:
o Change license from Dual BSD/GPL to GPL
<scott.feldman@intel.com>
e1000 net driver update 3/6:
o Feature: added new interrupt mitigation knobs.
<scott.feldman@intel.com>
e1000 net driver update 4/6:
o Bug fix: ethtool SSET and NWAY we're broken when !netif_running.
o Cleanup: removed PPC code optimization - not needed.
o Bug fix: workaround for Dell Avalon system: change descriptor
write-back policy to write back 16 bytes rather than 8 bytes.
o Bug fix: added mwb() to force memory transaction ordering on ia-64.
o Cleanup: misc. whitespace cleanup.
<scott.feldman@intel.com>
e1000 net driver update 5/6:
o Bug fix: moved tx_timeout processing from interrupt context
to process context so h/w controller reset can busy-wait.
<scott.feldman@intel.com>
e1000 net driver 6/6:
o Feature: Merged NAPI support from Robert Olsson
<jgarzik@mandrakesoft.com>
Update 8139too net driver to make new rx-reset method the default
<jgarzik@mandrakesoft.com>
Fix mistake in 8139too net driver Config.in entry
<jgarzik@mandrakesoft.com>
Proper support for RTL8139 rev K in 8139too net driver
<jgarzik@mandrakesoft.com>
Release 8139too net driver version 0.9.26.
<jgarzik@mandrakesoft.com>
8139cp net driver updates:
* fix tx checksumming (it's still ifdef'd out by default)
* bump version to 0.2.0
* ifdef out dev->change_mtu support, it is reported broken.
<jgarzik@mandrakesoft.com>
Include linux/in.h and linux/ip.h in 8139cp net driver
<jgarzik@mandrakesoft.com>
Add 64-bit DMA support to 8139cp net driver
<jgarzik@mandrakesoft.com>
Fix 8139cp net driver 64-bit PCI DMA support
(thanks for DaveM for advice and help)
<jgarzik@mandrakesoft.com>
e1000 net driver small cleanup:
return EOPNOTSUPP if no eeprom present, in ETHTOOL_SEEPROM ioctl
<hch@lst.de>
Add ETHTOOL_GDRVINFO ioctl support to several pcmcia net drivers,
and one USB net driver: 3c574_cs, ibmtr_cs, pcnet_cs, ray_cs,
xirc2ps_cs, xircom_cb, and usb/net/kaweth
<fdavis@si.rr.com>
[PATCH] drivers/media/video/bt856.c
Another i2c-old --> i2c patch for bt856.c .
<fdavis@si.rr.com>
[PATCH] drivers/media/video/saa7110.c
Here's the saa7110.c i2c-old --> i2c patch.
<fdavis@si.rr.com>
[PATCH] drivers/media/video/bt819.c
Here's the bt819 i2c-old --> i2c patch.
<davem@nuts.ninka.net>
include/linux/sctp.h: Use __u{8,16,32} instead of uint{8,16,32}_t
<davidm@wailua.hpl.hp.com>
ia64: Make v2.5.32 compile.
<david-b@pacbell.net>
[PATCH] usb/core/hcd-pci, pci cleanup
This doesn't really do what it was expected to do,
and even that shouldn't be needed. So: remove.
<davidm@tiger.hpl.hp.com>
ia64: Add asm-ia64/kmap_types.h (dummy file, but needed to get aio.c compiled).
<davem@redhat.com>
This converts all of the input USB drivers to manage DMA
buffers via usb_buffer_alloc in 2.5.x This helps platforms
where doing a pci_{map,unmap}_single() on every input event
is very inefficient.
Also adds a missing kfree(hid), because the HID struct was never
freed.
<torvalds@penguin.transmeta.com>
Fix defconfig (incomplete due to the syntax error in char Config.in)
<willy@debian.org>
[PATCH] More support for upward growing stacks
- remove elf_caddr_t. It's positively dangerous to #define this since
elf_caddr_t foo, bar; creates variables of different types (foo is
char *, bar is char).
- rewrite large chunks of create_elf_tables(), it needed cleaning anyway.
- add upwards-growing stack support to create_elf_tables.
- redefine the ARCH_DLINFO stuff on powerpc -- it's tested, works.
- add upwards-growing-stack support to exec.c too.
<willy@debian.org>
[PATCH] reintroduce close() optimisation
This optimisation is really noticeable as it avoids having to take the
BKL on every close().
<willy@debian.org>
[PATCH] push the BKL down in setfl
Just pushes the BKL down a little, no big deal.
<anton@samba.org>
[PATCH] compile fix for st.c
<rusty@rustcorp.com.au>
[PATCH] list_for_each_entry
This adds list_for_each_entry, which is the equivalent of list_for_each
and list_entry, except only one variable is needed.
<viro@math.psu.edu>
[PATCH] move stuff from ide_register_subdriver() to ide-probe.c
Move stuff from ide_register_subdriver() (associating drive with
high-level driver) to ide-probe.c, so that remaining stuff can be safely
called in parallel with IO on other drives [Andre]
<viro@math.psu.edu>
[PATCH] finish introduction of ->reinit()
Finish introduction of ->reinit() - Jens had missed MOD_DEC_USE_COUNT on
several exits from ide-cd one and forgot to remove the loop from
ide-floppy ide-tape and ide-scsi ones ;-) (->reinit() is the body of
loop in ->init() - stuff that should be done one drive; in 2.5.32
ide-disk one is OK, ide-cd is OK modulo minor bugs and in the rest it's
a copy of ->init())
<viro@math.psu.edu>
[PATCH] put IDE drives on lists
This puts drives on cyclic lists - per-driver ones for drives that had
been claimed by high-level drivers and ata_unused for unclaimed drives.
We put drives on ata_unused in the very end of ideprobe_init() and then
move them to drivers' lists as they are claimed.
<vojtech@suse.cz>
Remove uninformative coments in input.c.
Silence hotplug printk()s in input.c
More careful probe and init in atkbd.c and psmouse.c
to avoid triggering bugs in certain keyboards.
Accept old AT (non PS/2) keyboards with limited command set.
Accept Logitech mice which can only do IMPS/2 and not PS2++.
Use a buffer in i8042.c to avoid spinlock deadlocks when
serio_write is called from within serio_interrupt.
Only ask keyboard to resent if the keyboard is there (ie no timeout).
Linus, this should fix both your keyboard and your mouse!
<viro@math.psu.edu>
[PATCH] move media_type checks from ide_scan_devices() to ->reinit
Checks for media type, ->driver_req, etc. are moved from the
ide_scan_devices() to ->reinit(). ide_scan_devices() had lost first two
arguments (it will completely disappear later).
<viro@math.psu.edu>
[PATCH] Remove duplicate calls to ide_cdrom_init(), idedisk_init(), etc
Duplicate calls of ide_cdrom_init(), idedisk_init(), etc. are removed
from ide_init_builtin_drivers() (they were called both from there (i.e.
from ide_init()) and later as module_init() for high-level drivers).
<viro@math.psu.edu>
[PATCH] per-drive IDE deregistration
loops in ide_cdrom_init()/ide_cdrom_exit(), etc. are pulled into
ide_register_module()/ide_unregister_module() resp.
<viro@math.psu.edu>
[PATCH] Add ->owner to ide_driver_t
->owner added to ide_driver_t. MOD_INC_USE_COUNT/MOD_DEC_USE_COUNT
taken out of ->reinit(). ide_reinit_drive() turned into "call
->reinit() for all high-level drivers that are registered until somebody
claims the drive" (instead of open-coded variant in 2.5.32; cleaner and
works correctly for modular drivers).
<viro@math.psu.edu>
[PATCH] turn ide_reinit_drive() into ata_attach()
ide_reinit_drive() turned into ata_attach(). Said beast takes a drive,
tries to feed it to high-level drivers and drops it on the ata_unused if
nobody claims the sucker. IOW, that's what ide_register_module() used
to do, but for a single drive.
ideprobe_init() calls ata_attach() instead of putting on ata_unused.
ide_register_module() eliminated. Some of the callers do not need it
anymore, some (ide_replace_subdriver()) actually want ata_attach(drive).
ide_scan_devices() is gone. There were two remaining callers - in
ide_register_module() and ide_unregister_module(). The former had been
turned into "put driver on the list, empty ata_unused into temporary
list and call ata_attach() on all drives there". The latter is "remove
driver from the list, call ->cleanup() and ata_attach() for all drives"
(->cleanup() gives the drive up, ata_attach() gives the remaining
drivers a shot for that drive; if nobody claims it - it's put on
ata_unused).
<viro@math.psu.edu>
[PATCH] Remove unused high-level IDE ->init method
->init() for high-level drivers is never called (other than as
module_init() when they are initialized). Method removed, instances
cleaned up.
<viro@math.psu.edu>
[PATCH] put ide_driver_t on lists
instead of messing with ide_module_t, we put ide_driver_t themselves on
a (cyclic) list - said list being the only use of ide_module_t for
high-level drivers. ide_register_module()/ide_unregister_module() takes
ide_driver_t now (renamed to ide_register_driver()). /proc/ide/drivers
switched to use of that cyclic list and uses seq_file instead of old
home-grown code.
<viro@math.psu.edu>
[PATCH] move add_gendisk()/del_gendisk() into ->reinit() and ->cleanup()
add_gendisk()/del_gendisk() moved into ->reinit() and ->cleanup() of
ide-{disk,cd,floppy} - i.e. moments when high-levle driver claims/gives
up a drive.
register_disk() also shifted into ->reinit().
consequently, revalidate_drives() is gone (it did messy postponed
rereading of partition tables; not needed anymore). Ditto for
ide_geninit().
regular 2.5 changes in ->revalidate() and BLKRRPART handling - same as
all other block devices.
<zaitcev@redhat.com>
[PATCH] Patch to irq compat stuff in 2.5.32
This came up in 2.5.30, apparently someone was fooled by names
which do not quite match actual functions.
<torvalds@penguin.transmeta.com>
Don't use __func__ - not all versions of gcc support it.
Some day gcc may drop support for __FUNCTION__ entirely, we'll
just add a #define __FUNCTION__ __func__ at that point. In the
meantime, gcc-3.x warns about pasting __FUNCTION__, so don't do it.
<akpm@zip.com.au>
[PATCH] minor page_alloc.c things
- Kill duplicate debug check
- Add a test for pages which have a pte_chain coming off the buddy lists.
<akpm@zip.com.au>
[PATCH] reduced TLB invalidation rate
It has been noticed that across a kernel build many calls to
tlb_flush_mmu() do not have anything to flush, apparently because glibc
is mmapping a file over a previously-mapped region which has no
faulted-in ptes.
This patch detects this case and optimises away a little over one third
of the tlb invalidations.
The functions which potentially cause an invalidate are
tlb_remove_tlb_entry(), pte_free_tlb() and pmd_free_tlb(). These have
been front-ended in asm-generic/tlb.h and the per-arch versions now
have leading double-underscores. The generic versions tag the
mmu_gather_t as needing a flush and then call the arch-specific
version.
tlb_flush_mmu() looks at tlb->need_flush and if it sees that no real
activity has happened, the invalidation is avoided.
The success rate is displayed in /proc/meminfo for the while. This
should be removed later.
<akpm@zip.com.au>
[PATCH] better buffer_head slab packing
Don't align the buffer_head slab on hardware cacheline boundaries.
It's on the wrong side of the speed/space tradeoff, especially for
P4's.
<akpm@zip.com.au>
[PATCH] rename zone_struct and zonelist_struct, kill zone_t and
- Remove the zonelist_t typedef. Rename struct zonelist_struct to
struct zonelist and use that everywhere.
- Remove the zone_t typedef. Rename struct zone_struct to struct
zone and use that everywhere.
<akpm@zip.com.au>
[PATCH] per-zone-LRU
Replace the global page LRUs with per-zone LRUs.
This fixes the failure described at
http://mail.nl.linux.org/linux-mm/2002-08/msg00049.html
It will also fixes the problem wherein a search for a reclaimable
ZONE_NORMAL page will undesirably move aged ZONE_HIGHMEM pages to the
head of the inactive list. (I haven't tried to measure any benefit
from this aspect).
It will also reduces the amount of CPU spent scanning pages in page
reclaim. I haven't instrumented this either.
This is a minimal conversion - the aging and reclaim logic is left
unchanged, as far as is possible.
I was bitten by the "incremental min" logic in __alloc_pages again.
There's a state in which the sum-of-mins exceeds zone->pages_high. So
we call into try_to_free_pages(), which does nothing at all (all zones
have free_pages > pages_high). The incremental min is unchanged and
the VM locks up.
This was fixed in __alloc_pages: if zone->free_pages is greater than
zone->pages_high then just go and grab a page.
<akpm@zip.com.au>
[PATCH] per-zone LRU locking
Now the LRUs are per-zone, make their lock per-zone as well.
In this patch the per-zone lock shares a cacheline with the zone's
buddy list lock, which is very bad. Some groundwork is needed to fix
this well.
This change is expected to be a significant win on NUMA, where most
page allocation comes from the local node's zones.
For NUMA the `struct zone' itself should really be placed in that
node's memory, which is something the platform owners should look at.
However the internode cache will help here.
Per-node kswapd would make heaps of sense too.
<akpm@zip.com.au>
[PATCH] add L1_CACHE_SHIFT_MAX
zone->lock and zone->lru_lock are two of the hottest locks in the
kernel. Their usage patterns are quite independent. And they have
just been put into the same structure. It is essential that they not
fall into the same cacheline.
That could be fixed by padding with L1_CACHE_BYTES. But the problem
with this is that a kernel which was configured for (say) a PIII will
perform poorly on SMP PIV. This will cause problems for kernel
vendors. For example, RH currently ship PII and Athlon binaries. To
get best SMP performance they will end up needing to ship a lot of
differently configured kernels.
To solve this we need to know, at compile time, the maximum L1 size
which this kernel will ever run on.
This patch adds L1_CACHE_SHIFT_MAX to every architecture's cache.h.
Of course it'll break when newer chips come out with increased
cacheline sizes. Better suggestions are welcome.
<akpm@zip.com.au>
[PATCH] ensure that the per-zone locks fall in separate cachelines
Use the new max cache alignment to optimise the layout of struct zone.
struct zone goes from ~270 bytes (UP) to 768 bytes (SMP, x86). This is
not a trick which should be generally used.
<rddunlap@osdl.org>
I've been using gcml2 from Greg Banks to look at CONFIG_
variable dependencies in config.in files.
By moving drivers/input/config.in before drivers/char/Config.in
and drivers/usb/Config.in for arch/alpha and arch/mips(64),
several (7) instances of this message:
forward declared symbol "CONFIG_INPUT" used in dependency list
and (6) instances of this one:
forward declared symbol "CONFIG_SOUND_GAMEPORT" used in
dependency list
can be removed. (Yes, the latter one is for OSS drivers,
so it's not so important.)
It also adds one forward dependency for a USB joystick
in the input subsystem [still only for alpha and mips(64)].
Most other arches are already like this.
<james@cobaltmountain.com>
[PATCH] arch_i386_kernel_smpboot.c, typo: wierd
[ It's strange how many of us can't spell weird ]
<james@cobaltmountain.com>
[PATCH] include_asm-alpha_mmzone.h, typo: the the
<james@cobaltmountain.com>
[PATCH] drivers_scsi_sym53c8xx_comm.h, typo: the the
<james@cobaltmountain.com>
[PATCH] arch_sh_kernel_irq_intc2.c, typo: the the
<james@cobaltmountain.com>
[PATCH] drivers_scsi_sym53c8xx_2_sym_glue.c, typo: the the
<bhards@bigpond.net.au>
[PATCH] header cleanup - drivers_mtd_devices_blkmtd.c
<linux/pagemap.h> has the normal idempotent construction.
The attached file removes the second #include.
<james@cobaltmountain.com>
[PATCH] include_asm-ia64_sn_alenlist.h, typo: the the
<james@cobaltmountain.com>
[PATCH] Documentation_networking_bonding.txt, typo: the the
<james@cobaltmountain.com>
[PATCH] drivers_net_wan_sdla_x25.c, typo: the the
<james@cobaltmountain.com>
[PATCH] Documentation_watchdog-api.txt, typo: the the
<johnpol@2ka.mipt.ru>
[PATCH] drivers_scsi_NCR53C9x_c synchronize_irq() fix
<james@cobaltmountain.com>
[PATCH] drivers_net_bonding.c, typo: the the
<james@cobaltmountain.com>
[PATCH] arch_ia64_sn_io_sn1_pcibr.c, typo: the the
<colpatch@us.ibm.com>
[PATCH] i386 ksyms cleanup
<james@cobaltmountain.com>
[PATCH] drivers_scsi_sym53c8xx_2_sym_fw1.h, typo: the the
<james@cobaltmountain.com>
[PATCH] drivers_message_i2o_README.ioctl, typo: the the
<james@cobaltmountain.com>
[PATCH] drivers_scsi_sym53c8xx_2_sym_fw2.h, typo: the the
<bhards@bigpond.net.au>
[PATCH] header cleanup - drivers_bluetooth_hci_ldisc.c
<linux/config.h> has the normal idempotent construction.
The attached file removes the second #include.
<ahaas@neosoft.com>
[PATCH] designated initializer patches for include_asm-i386
Here are a couple of patches for files in include/asm-i386. Patches
are against 2.5.31.
<trini@kernel.crashing.org>
[PATCH] Make CONFIG_VIDEO_RPOC_FS depend on CONFIG_PROC_FS
This makes the CONFIG_VIDEO_PROC_FS question depend on CONFIG_PROC_FS.
Additionally, this changes all tests/comments about CONFIG_PROC_FS &&
CONFIG_VIDEO_PROC_FS to be just CONFIG_VIDEO_PROC_FS.
<alan@redhat.com>
[PATCH] Re: Make CONFIG_VIDEO_RPOC_FS depend on CONFIG_PROC_FS
For 2.5 Gerd Knorr is the video4linux/v4l2 maintainer not me
kraxel@bytesex.org or the list video4linux-list@redhat.com - which is
hosted at but not an RH specific list.
<davids@youknow.youwant.to>
[PATCH] Trivial Patch to SonyCD535 documentation
Update my email address and fix an ancient miscalculation. One could argue
that this driver should just be removed. I sent these changes to the
maintainer a few years ago and got no reply.
<james@cobaltmountain.com>
[PATCH] drivers_scsi_sym53c8xx.c, typo: the the
<paulus@samba.org>
[PATCH] Fix mesh config
We need this small change to drivers/scsi/Config.in. It only affects
people using powermacs since the MESH hardware only exists on
powermacs and clones.
<james@cobaltmountain.com>
[PATCH] fs_reiserfs_fix_node.c, typo: resourses
<james@cobaltmountain.com>
[PATCH] drivers_scsi_ppa.c, typo: the the
<james@cobaltmountain.com>
[PATCH] Documentation_cciss.txt, typo: the the
<james@cobaltmountain.com>
[PATCH] include_asm-mips64_sn_sn0_hubio.h, typo: the the
<johnpol@2ka.mipt.ru>
[PATCH] drivers_net_sb1250-mac_c synchronize_irq() fix
<james@cobaltmountain.com>
[PATCH] drivers_net_tulip_interrupt.c, typo: the the
<sandeen@sgi.com>
[PATCH] warning cleanup for drivers_scsi_dpt_i2o.c
<rusty@rustcorp.com.au>
[PATCH] Designated initializers for sound_ppc
The old form of designated initializers are obsolete: we need to
replace them with the ISO C forms before 2.6. Gcc has always supported
both forms anyway.
<david@gibson.dropbear.id.au>
[PATCH] Fix for magic sysrq when CONFIG_VT=n
The "unRaw" option for the magic sysrq key fails to compile if
CONFIG_VT is false. This patch fixes that:
<bart.de.schuymer@pandora.be>
[PATCH] update comments in ip_tables.c
I believe the comments about locking in net/ipv4/netfilter/ip_tables.c
are outdated/misleading. Please consider the following comments instead
(or something similar).
<ahaas@neosoft.com>
[PATCH] designated initializer patches for fs_nls
Here are a few C99 initializer patches for files in fs/nls.
<bhards@bigpond.net.au>
[PATCH] Re: header cleanup - drivers_macintosh_via-pmu.c
<bhards@bigpond.net.au>
[PATCH] header cleanup - drivers_char_drm_mga_state.c
drivers/char/drm/drm.h has the normal idempotent construction.
The attached file removes the second #include.
<sam@ravnborg.org>
[PATCH] kerneldoc: In kernel-hacking describe designated initialisers
Designated initialisers as per ISO C99
<james@cobaltmountain.com>
[PATCH] arch_ppc_mm_tlb.c, typo: the the
<james@cobaltmountain.com>
[PATCH] net_ipv4_netfilter_ip_nat_core.c, typo: wierd
<james@cobaltmountain.com>
[PATCH] arch_ppc64_kernel_iSeries_IoMmTable.c, typos: the the, resourses
<james@cobaltmountain.com>
[PATCH] drivers_scsi_imm.c, typo: the the
<james@cobaltmountain.com>
[PATCH] drivers_s390_block_dasd_3990_erp.c, typo: becaus(e), capitalization
<ahaas@neosoft.com>
[PATCH] designated initializer patches for kernel_dma.c
Here's a patch for kernel/dma.c that switches it to use
C99 designated initializers.
<sandeen@sgi.com>
[PATCH] warning cleanup for drivers_scsi_fdomain.c
<james@cobaltmountain.com>
[PATCH] arch_mips_kernel_setup.c, typo: wierd
<manik@cisco.com>
[PATCH] [TRIVIAL PATCH] { 2.5.30 } : removing redundant variable frominit_main.c
<james@cobaltmountain.com>
[PATCH] include_asm-ia64_sal.h, typo: the the
<sandeen@sgi.com>
[PATCH] warning cleanup for drivers_char_mxser.c
<james@cobaltmountain.com>
[PATCH] net_irda_irlmp_event.c, typos: the the, whish
<gerg@snapgear.com>
[PATCH] : trivial mtdblock.c fix
The logical sense of the command check is wrong.
<vojtech@suse.cz>
Don't allow CONFIG_INPUT_MOUSEDEV_PSAUX without CONFIG_INPUT_MOUSEDEV.
<vojtech@suse.cz>
Start keyboard_bh only after registering the keyboard handler.
<vojtech@suse.cz>
Support the 0xff ps/2 mouse reset command in mousedev.c, XFree
needs it for mouse autodetection.
<torvalds@penguin.transmeta.com>
Don't paste __FUNCTION__, that's deprecated.
<torvalds@penguin.transmeta.com>
Make e100 driver compile (e100_force_speed_duplex() cannot be
static, as it is needed by e100_test.c too)
<torvalds@penguin.transmeta.com>
Add some fascist code to trap __FUNCTION__ pasting, fix up
some more pasters..
<greg@kroah.com>
USB: belkin serial driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: cyberjack driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: pl2303 driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: omninet driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: mct_u232 driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: kl5usb105 driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: digi_acceleport driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: empeg driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: io_edgeport driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: ir-usb driver: gcc3 warning fix
<greg@kroah.com>
USB: keyspan driver: minor formatting fixes.
<greg@kroah.com>
USB: added break support for 2 port keyspan devices.
<david-b@pacbell.net>
[PATCH] USB dma and scatterlists
This patch (almost all from DaveM) wraps up the DMA API work
by adding the scatterlist map/sync/unmap support. And removes
the corresponding FIXME.
<david-b@pacbell.net>
[PATCH] ehci, registers to driverfs (for debug)
When debugging, it's useful to see what the registers are
saying is up without needing to poke around in the kernel.
This patch exposes them.
<david-b@pacbell.net>
[PATCH] ohci on sparc64
DaveM noticed he needed a pci_dma_sync_single() after the
DMA conversion late in 32 ; here's the patch.
FYI this driver was previously having to unmap/remap in
that location, this is an improvement! :)
<greg@kroah.com>
USB: fix debugging code to allow USB_NO_DMA_MAP.
Thanks to Oliver Neukum for finding this
<torvalds@home.transmeta.com>
Merge with dri CVS tree:
- update some incorrect version checks
- update radeon driver from 1.4.0 to 1.5.0
- use C99 named initializers
<greg@kroah.com>
USB: io_ti driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: safe_serial driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: serial drivers: fixed __FUNCTION__ usages that I missed before.
<greg@kroah.com>
USB: bluetty driver: fixed __FUNCTION__ usages.
<greg@kroah.com>
USB: brlvger driver: fixed __FUNCTION__ usage
<davem@nuts.ninka.net>
[SCTP]: Whitespace/codingstyle fixups, plus a bug fix or two.
<davem@nuts.ninka.net>
net/sctp/sctp_sm_statefuns.c: Remove bogus use of unused attribute with a label.
<davem@nuts.ninka.net>
net/sctp/sctp_protocol.c: Fix typo from cleanups.
<davem@nuts.ninka.net>
net/sctp/sctp_sm_sideeffect.c: Kill unusued variable in sctp_side_effects.
<davem@nuts.ninka.net>
net/sctp/sctp_tsnmap.c: Fix typo from cleanups.
<davem@nuts.ninka.net>
net/sctp/sctp_sm_make_chunk.c: Kill unused variable in sctp_make_data_empty.
<davem@nuts.ninka.net>
net/sctp/sctp_socket.c: Fix printf string for size_t.
- also fix sctp.h declaration type of sctp_get_port
<davem@nuts.ninka.net>
net/sctp/sctp_socket.c: Fix sctp_get_port types, static private funcs.
<davem@nuts.ninka.net>
net/sctp/sctp_socket.c: Mark sctp_skb_recv_datagram static.
<kuznet@ms2.inr.ac.ru>
[NET]: Add TCP segmentation offload core infrastructure.
<kuznet@ms2.inr.ac.ru>
[NET]: Add TCP segmentation offload support to e1000.
<kuznet@ms2.inr.ac.ru>
[NET]: Add segmentation offload support to TCP.
<davem@nuts.ninka.net>
I8042: Add SPARC support.
<davem@nuts.ninka.net>
drivers/input/serio/i8042-sparcio.h: Add missing endef.
<davem@nuts.ninka.net>
drivers/input/serio/i8042-sparcio.h: Fix ioremap args.
<davem@nuts.ninka.net>
drivers/input/serio/i8042.c: Allow IRQs to be determined at runtime.
<davem@nuts.ninka.net>
drivers/scsi/sg.c: Include linux/vmalloc.h
<davem@nuts.ninka.net>
fs/binfmt_elf.c: Kill warnings introduced by stack-grows-up changes.
<davem@nuts.ninka.net>
fs/romfs/inode.c: Kill warning on 64-bit systems.
<davem@nuts.ninka.net>
drivers/input/serio/i8042-sparcio.h: Define I8042_{COMMAND,DATA}_REG.
<davem@nuts.ninka.net>
arch/sparc64/defconfig: Update.
<vandrove@vc.cvut.cz>
Add a missing EXPORT_SYMBOL(input_devclass); into input.c
<vojtech@suse.cz>
Remove user configurable I8042_BASE/I8042_IRQs.
Archs can define i8042 access in i8042-io*.h
<agrover@groveronline.com>
ACPI interpreter update
<torvalds@penguin.transmeta.com>
Avoid unused variable warning when kmap() ends up being a no-op.
<rml@tech9.net>
[PATCH] have lockd and rpciod drop locks on exit
Neither lockd nor rpciod properly drop the BKL on exit.
Yes, the BKL is automatically relinquished on schedule but the failure
to drop the lock throws off the atomic accounting and results in a
preempt_count warning on exit.
This makes them play fair - it does not hurt.
<rml@tech9.net>
[PATCH] make raid5 checksums preempt-safe, take two
The raid5 xor checksums use MMX/SSE state and are not preempt-safe.
Attached patch disables preemption in FPU_SAVE and XMMS_SAVE and
restores it in FPU_RESTORE and XMMS_RESTORE - preventing preemption
while in fp mode.
<rml@tech9.net>
[PATCH] misc. kernel preemption bits
Misc. kernel preemption-related bits. Specifically,
- update to Documentation/preempt-locking.txt (me)
- preempt-safe arch/i386/kernel/ioport.c :: sys_ioperm()
(George Anzinger)
- remove "kernel_lock()" cruft in include/linux/smp.h
(Andrew Morton)
- we have a debug check in preempt_schedule that, even
on detecting a schedule with irqs disabled, still goes
ahead and reschedules. We should return. (me)
- preempt-safe net/core/dev.c :: netif_rx() (George Anzinger)
<vojtech@suse.cz>
In mousedev.c, don't send a zero mouse movement after a command if
requested, also fix a possible race with two processes using the same
file descriptor.
<shaggy@kleikamp.austin.ibm.com>
JFS: rework extent invalidation
All callers of invalidate_metapages() actually have a dxd_t or pxd_t to
invalidate, so add invalidate_pxd_metapages() and invalidate_dxd_metapages()
routines with a common __invalidate_metapages() backend instead.
Start to invalidate the EA/ACL extents, we'll need that soon.
Submitted by Christoph Hellwig
<pwaechtler@mac.com>
[PATCH] oss/maestro3.c - convert cli to spinlocks
This is the first of a series of patches against 2.5.32
converting almost all remaining OSS sound drivers to use
spin_lock_irqsave&co instead of cli() which is nowadays
gone when compiling for SMP.
The more complicated ones were:
dmabuf.c
maestro3.c
ad1848.c
I hope I haven't broken anything - but I think some of the
drivers are simply not SMP safe.
One day OSS and some of the older soundcards are obsolete - so what?
<pwaechtler@mac.com>
[PATCH] oss/dmabuf.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/ad1848.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/ad1816.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/sscape.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/pss.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/mpu401.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/sequencer.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/audio.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/midibuf.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/pas2_pcm.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/nm256_audio.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/pas2_midi.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/uart6850.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/uart401.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/v_midi.c - convert cli to spinlocks
<davidm@tiger.hpl.hp.com>
ia64: Sync with 2.5.32 to get a working kernel.
<davem@nuts.ninka.net>
[SCTP]: Rename sctp_foo.[ch] to foo.[ch] and kill CVS tags on authors request.
<davidm@tiger.hpl.hp.com>
Create dummy file include/asm-ia64/mc146818rtc.h since ide-geometry.c continues to
insist on it.
<vojtech@suse.cz>
Ignore error 0xff - 'general error' in AUX wire test in i8042.c,
some mainboards (Andrew Morton's Dell) report that even everything
is okay with AUX. Also remove a check for very old AMI i8042's, which
could generate false positives on modern buggy mainboards.
<shaggy@kleikamp.austin.ibm.com>
JFS extended attributes
<shaggy@kleikamp.austin.ibm.com>
JFS: Add write_super_lockfs() and unlock_fs() for snapshot.
Submitted by Steve Best.
<shaggy@kleikamp.austin.ibm.com>
Proper implementation of jfs_get_blocks
jfs_get_blocks should return up to the number of blocks in the
extent rather than limiting itself to one block, as the initial,
trivial implementation did. This greatly reduces the overhead of
O_DIRECT reads and writes.
Submitted by Badari Pulavarty (pbadari@us.ibm.com)
<colpatch@us.ibm.com>
[PATCH] PCI Cleanup
The patch removes the pci_confN_(read|write)_config_(byte|word|dword) mess and
pares it down to pci_confN_(read|write). This change is reflected in the
pci_ops structure, which only has read and write function pointers rather than
the byte, word, and dword versions. These changes happen in the pci_conf(1|2)
and pci_bios read and write calls.
This patch also removes the pci_config_(read|write) function pointers. People
shouldn't be using these (I don't think) and should be using the pci_ops
structure linked through the pci_dev structure. These end up calling the same
functions that the pci_config_(read|write) pointers refer to anyway.
<greg@kroah.com>
[PATCH] PCI: add pci_bus_* functions to replace the pci_read_* and pci_write_* functions.
add pci_bus_* functions to replace the pci_read_* and pci_write_* functions.
<greg@kroah.com>
[PATCH] PCI Hotplug: removed the pci_*_nodev functions
removed the pci_*_nodev functions, as the pci_bus_* functions should be used instead.
<greg@kroah.com>
[PATCH] PCI: x86-64 pci_ops changes
x86-64 pci changes
<greg@kroah.com>
[PATCH] PCI: alpha pci_ops changes
pci_ops update for most of the alpha ports.
<hannal@us.ibm.com>
[PATCH] PCI: ia64 pci_ops changes
ia64 pci ops changes
<hannal@us.ibm.com>
[PATCH] PCI: mips pci_ops changes
mips pci ops changes
<hannal@us.ibm.com>
[PATCH] PCI: sh pci_ops changes
sh pci ops changes
<colpatch@us.ibm.com>
[PATCH] Fixed NUMA-Q PCI patch
This patch fixes a bug in NUMA-Q PCI code where the kernel can't find PCI
devices on any node other than the first.
<david-b@pacbell.net>
[PATCH] show pci_pool stats in driverfs]
This patch exposes basic allocation statistics for pci pools,
very much like /proc/slabinfo but applying to DMA-consistent
memory. A file "pools" is created in the driverfs directory
for the relevant pci device when the first pool is created, and
removed when the last pool is destroyed.
Please merge to 2.5.latest. If it matters, DaveM said it
looks fine. It produces sane output for all the 2.5.30
USB host controller drivers.
<greg@kroah.com>
PCI: compile time fix for the pci pool patch.
<pwaechtler@mac.com>
[PATCH] oss/maestro.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/ite8172.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/es1370.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/msnd_pinnacle.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/sound_timer.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/nec_vrc5477.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/mad16.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/sys_timer.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/dev_table.h - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/opl3sa.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/opl3sa2.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/wavfront.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/soundcard.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/waveartist.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/cmpci.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/rme96xx.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/esssolo1.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/sonicvibes.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/midi_synth.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/trident.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/vwsnd.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/pas2_card.c - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/nm256.h - convert cli to spinlocks
<pwaechtler@mac.com>
[PATCH] oss/gus_card.c - convert cli to spinlocks
<mingo@elte.hu>
[PATCH] ldt-fix-2.5.32-A3
this is an updated version of the LDT fixes. It fixes the following kinds
of problems:
- fix a possible gcc optimization causing a race causing the loading of a
corrupt LDT descriptor upon context switch. [this fix got simplified
over previous versions.]
- remove an unconditional OOM printk, and there's no need to set ->size
in the OOM path.
- fix preemption bugs, load_LDT()/clear_LDT() was not preemption-safe,
when it was used outside of spinlocks.
the context-switch race is the following. 'LDT modification' is the
following operation: the seg->ldt pointer is modified, then seg->size is
modified. In theory gcc is free to reschedule the two modifications, and
first modify ->size, then ->ldt. Thus if this modification is not
synchronized with context-switches, another thread might see a temporary
state of the new ->size [which was increased], but still the old pointer.
Ie.:
CPU0 CPU1
pc->size = newsize;
load_LDT(); // (oldptr, newsize)
pc->ldt = newptr;
the corrupt LDT is loaded until the SMP cross-call is sent, leaving the
window open for many usecs.
the fix is to put a wmb() after ->ldt modifications. [this is also in
preparation of not-write-ordered SMP x86 designs.]
<mingo@elte.hu>
[PATCH] MAINTAINERS patch
please apply this patch (Robert ACK-ed it). While there is a preemptible
kernel entry already, i think listing this at the scheduler entry is
justfied, preemption has a number of scheduler interactions.
<akpm@zip.com.au>
[PATCH] debug check in put_page_testzero()
As suggested by Daniel - it's a bug to run put_page_testzero
against a zero-ref page.
<akpm@zip.com.au>
[PATCH] remove pagevec_lru_del()
it was only being used in invalidate_inode_pages(), and from there,
pagevec_release() does the same thing.
<akpm@zip.com.au>
[PATCH] put_page() consolidation
Clean up put_page() and page_cache_release(). It's pretty simple now:
#define page_cache_get(page) get_page(page)
#define page_cache_release(page) put_page(page)
<akpm@zip.com.au>
[PATCH] batched freeing of anon pages
A reworked version of the batched page freeing and lock amortisation
for VMA teardown.
It walks the existing 507-page list in the mmu_gather_t in 16-page
chunks, drops their refcounts in 16-page chunks, and de-LRUs and
frees any resulting zero-count pages in up-to-16 page chunks.
<akpm@zip.com.au>
[PATCH] writeback correctness and efficiency changes
This is a performance and correctness fix against the writeback paths.
The writeback code has competing requirements. Sometimes it is used
for "memory cleansing": kupdate, bdflush, writer throttling, page
allocator writeback, etc. And sometimes this same code is used for
data integrity pruposes: fsync, msync, fdatasync, sync, umount, various
other kernel-internal uses.
The problem is: how to handle a dirty buffer or page which is currently
under writeback.
For memory cleansing, we just want to skip that buffer/page and go onto
the next one. But for sync, we must wait on the old writeback and then
start new writeback.
mpage_writepages() is current correct for cleansing, but incorrect for
sync. block_write_full_page() is currently correct for sync, but
inefficient for cleansing.
The fix is fairly simple.
- In mpage_writepages(), don't skip the page is it's a sync
operation.
- In block_write_full_page(), skip the buffer if it is a sync
operation. And return -EAGAIN to tell the caller that the writeout
didn't work out. The caller must then set the page dirty again and
move it onto mapping->dirty_pages.
This is an extension of the writepage API: writepage can now return
EAGAIN. There are only three callers, and they have been updated.
fail_writepage() and ext3_writepage() were actually doing this by
hand. They have been changed to return -EAGAIN. NTFS will want to
be able to return -EAGAIN from its writepage as well.
- A sticky question is: how to tell the writeout code which mode it
is operating in? Cleansing or sync?
It's such a tiny code change that I didn't have the heart to go and
propagate a `mode' argument down every instance of writepages() and
writepage() in the kernel. So I passed it in via current->flags.
Incidentally, the occurrence of a locked-and-dirty buffer in
block_write_full_page() is fairly rare: normally the collision avoidance
happens at the address_space level, via PageWriteback. But some
mappings (blockdevs, ext3 files, etc) have their dirty buffers written
out via submit_bh(). It is these buffers which can stall
block_write_full_page().
This wart will be pretty intrusive to fix. ext3 needs to become fully
page-based (ugh. It's a block-based journalling filesystem, and pages
are unnatural). blockdev mappings are still written out by buffers
because that's how filesystems use them. Putting _all_ metadata
(indirects, inodes, superblocks, etc) into standalone address_spaces
would fix that up.
- filemap_fdatawrite() sets PF_SYNC. So filemap_fdatawrite() is the
kernel function which will start writeback against a mapping for
"data integrity" purposes, whereas the unexported, internal-only
do_writepages() is the writeback function which is used for memory
cleansing. This difference is the reason why I didn't consolidate
those functions ages ago...
- Lots of code paths had a bogus extra call to filemap_fdatawait(),
which I previously added in a moment of weak-headedness. They have
all been removed.
<akpm@zip.com.au>
[PATCH] fix an ext3 deadlock
mpage_writepages() does a lock_page() on pages to be written back, even
when it is being used for page reclaim writeback.
This is normally OK, because the page is unlocked quickly - pages are
unlocked during writeback and nobody should be performing __GFP_FS
allocations inside lock_page().
But it has introduced a ranking problem in ext3:
generic_file_write
->lock_page
->ext3_prepare_write
->journal_start (waits for a commit)
versus
ext3_create()
->journal_start()
->ext3_new_inode(GFP_KERNEL)
->page reclaim
->mpage_writepages
->lock_page (locks up, transaction is held open)
Maybe sometime, I'll have to turn mpage_writepages' lock_page into a
trylock if the caller is PF_MEMALLOC. But for now, let's make ext3's
inside-transaction allocations use GFP_NOFS. There is only one of them.
<akpm@zip.com.au>
[PATCH] O_DIRECT for ext3
O_DIRECT support for ext3.
It works OK in all journalling modes.
Updates to the file metadata and inode are journalled as usual.
If the system crashes during an appending O_DIRECT write then journal
recovery will truncate the written-to file back to the length which it
had on entry to that write.
If the system crashes during a file overwrite to existing blocks then
the file contents will be an unknown mixture of old and new.
If the system crashes during a file overwrite which instantiates new
blocks in the middle of the file then there is a possibility of
uninitialised disk blocks being present in the file post-recovery.
<akpm@zip.com.au>
[PATCH] ext3 __FUNCTION__ pasting fix
Fix a __FUNCTION__ paste in revoke.c
<davidm@napali.hpl.hp.com>
[PATCH] efi.h move
It makes no sense to keep efi.h as an ia64-specific header (there really
are x86 machines coming out with optional EFI BIOS support).
<devel@brodo.de>
[PATCH] include/asm-i386/msr.h
It would be helpful if these msr.h #defines could get in.
<mingo@elte.hu>
[PATCH] clone-cleanup 2.5.32-BK
This moves CLONE_SETTID and CLONE_CLEARTID handling into kernel/fork.c,
where it belongs. [the CLONE_SETTLS is x86-specific and thus remains in
the per-arch process.c] This makes support for these two new flags much
easier: architectures only have to pass in the user_tid pointer.
<mingo@elte.hu>
[PATCH] scheduler fixes, 2.5.32-BK
This adds two scheduler related fixes:
- changes the migration code to use struct completion. Andrew pointed out
that there might be a small window in where the up() touches the
semaphore while the waiting task goes on and frees its stack. And
completion is more suited for this kind of stuff anyway.
- removes two unneeded exports, pointed out by Andrew.
<mingo@elte.hu>
[PATCH] TLS boot-initialization bugfix on SMP, 2.5.32-BK
This fixes a bad TLS initialization bug found by Andi Kleen. x86/SMP
only worked due to luck.
<cel@citi.umich.edu>
[PATCH] prevent oops in xprt_lock_write, against 2.5.32
when several RPC requests want to reconnect a TCP transport socket at
once, xprt_lock_write serializes the tasks to prevent multiple socket
connects. however, TCP connects are always done by a RPC child task that
has no request slot. xprt_lock_write can oops if there is no request slot
allocated to the invoking RPC task. reviewed and accepted by Trond.
the xprt_lock_write changes are not yet in 2.4, so this patch does not
apply to 2.4.
<cel@citi.umich.edu>
[PATCH] sock_writeable not appropriate for TCP sockets, for 2.5.32
sock_writeable determines whether there is space in a socket's output
buffer. socket write_space callbacks use it to determine whether to wake
up those that are waiting for more output buffer space.
however, sock_writeable is not appropriate for TCP sockets. because the
RPC layer's write_space callback uses it for TCP sockets, the RPC layer
hammers on sock_sendmsg with dozens of write requests that are only a few
hundred bytes long when it is trying to send a large write RPC request.
this patch adds logic to the RPC layer's write_space callback that
properly handles TCP sockets.
patch reviewed by Trond and Alexey.
<neilb@cse.unsw.edu.au>
[PATCH] PATCH - kNFSd - More small fixes for TCP nfsd
sk_inuse should be bigger than "char" as we can
have more than 255 server threads. Due to the way the count
is used, this is unlikely to actually cause a problem, but it
should nonetheless be fixed.
Also, two printk generate more noise than we would like,
so turn them into dprintk (debugging printk).
<neilb@cse.unsw.edu.au>
[PATCH] PATCH - md - Fix a typo in a recent patchset for raid5
<torvalds@home.transmeta.com>
The SCSI layer should _not_ try to decide about non-existent
partitions. The higher layers do a better job of it.
<greg@kroah.com>
ACPI: fix needed due to previous pci_ops change
<dan@debian.org>
[PATCH] ptrace exit fix
Gotta ptrace_unlink before calling release_task, and instead of fiddling
with the real_parent directly.
<ldb@ldb.ods.org>
[PATCH] Fix panic if pnpbios is enabled and speed up its check in
This fixes the pnpbios CS check to check for the correct values (it
wasn't up to date with the various GDT reshuffles), moves it inside the
kernel mode check, modifies it so that it takes less instructions and
marks it with unlikely().
Note that the 2.5.32 version of this check will cause the kernel to
always panic since it checks for the kernel segments and will thus
decide to jump to the pnpbios fault handler without being in pnpbios.
pnpbios_core.c instead seems to use the correct values.
<torvalds@home.transmeta.com>
Call con_init_devfs() to initialize VT subsystem for devfs.
<torvalds@home.transmeta.com>
Make block device initialization initialize the request queue
pointer before the device is opened.
This should finally fix the 2.5.x floppy driver.
<torvalds@home.transmeta.com>
Clean up insane floppy driver CURRENT handling, make the
driver remove the ftont of the queue from the request list
and cache it in 'current_req'.
This simplifies the driver and should be a lot more robust.
Still, I'll probably go blind just for _looking_ at the dang
sources of this thing. Whee.
<torvalds@home.transmeta.com>
Linux v2.5.33
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