Make ZONE_DMA32 optional
- Add #ifdefs around ZONE_DMA32 specific code and definitions.
- Add CONFIG_ZONE_DMA32 config option and use that for x86_64
that alone needs this zone.
- Remove the use of CONFIG_DMA_IS_DMA32 and CONFIG_DMA_IS_NORMAL
for ia64 and fix up the way per node ZVCs are calculated.
- Fall back to prior GFP_ZONEMASK of 0x03 if there is no
DMA32 zone.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use enum for zones and reformat zones dependent information
Add comments explaning the use of zones and add a zones_t type for zone
numbers.
Line up information that will be #ifdefd by the following patches.
[akpm@osdl.org: comment cleanups]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Move totalhigh_pages and nr_free_highpages() into highmem.c/.h
Move the totalhigh_pages definition into highmem.c/.h. Move the
nr_free_highpages function into highmem.c
[yoichi_yuasa@tripeaks.co.jp: build fix]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It fixes various coding style issues, specially when spaces are useless. For
example '*' go next to the function name.
Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
__init in headers is pretty useless because the compiler doesn't check it, and
they get out of sync relatively frequently. So if you see an __init in a
header file, it's quite unreliable and you need to check the definition
anyway.
Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Address a long standing issue of booting with an initrd on an i386 numa
system. Currently (and always) the numa kva area is mapped into low memory
by finding the end of low memory and moving that mark down (thus creating
space for the kva). The issue with this is that Grub loads initrds into
this similar space so when the kernel check the initrd it finds it outside
max_low_pfn and disables it (it thinks the initrd is not mapped into usable
memory) thus initrd enabled kernels can't boot i386 numa :(
My solution to the problem just converts the numa kva area to use the
bootmem allocator to save it's area (instead of moving the end of low
memory). Using bootmem allows the kva area to be mapped into more diverse
addresses (not just the end of low memory) and enables the kva area to be
mapped below the initrd if present.
I have tested this patch on numaq(no initrd) and summit(initrd) i386 numa
based systems.
[akpm@osdl.org: cleanups]
Signed-off-by: Keith Mannthey <kmannth@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch makes the following needlessly global functions static:
- slab.c: kmem_find_general_cachep()
- swap.c: __page_cache_release()
- vmalloc.c: __vmalloc_node()
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Now that we can detect writers of shared mappings, throttle them. Avoids OOM
by surprise.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Tracking of dirty pages in shared writeable mmap()s.
The idea is simple: write protect clean shared writeable pages, catch the
write-fault, make writeable and set dirty. On page write-back clean all the
PTE dirty bits and write protect them once again.
The implementation is a tad harder, mainly because the default
backing_dev_info capabilities were too loosely maintained. Hence it is not
enough to test the backing_dev_info for cap_account_dirty.
The current heuristic is as follows, a VMA is eligible when:
- its shared writeable
(vm_flags & (VM_WRITE|VM_SHARED)) == (VM_WRITE|VM_SHARED)
- it is not a 'special' mapping
(vm_flags & (VM_PFNMAP|VM_INSERTPAGE)) == 0
- the backing_dev_info is cap_account_dirty
mapping_cap_account_dirty(vma->vm_file->f_mapping)
- f_op->mmap() didn't change the default page protection
Page from remap_pfn_range() are explicitly excluded because their COW
semantics are already horrid enough (see vm_normal_page() in do_wp_page()) and
because they don't have a backing store anyway.
mprotect() is taught about the new behaviour as well. However it overrides
the last condition.
Cleaning the pages on write-back is done with page_mkclean() a new rmap call.
It can be called on any page, but is currently only implemented for mapped
pages, if the page is found the be of a VMA that accounts dirty pages it will
also wrprotect the PTE.
Finally, in fs/buffers.c:try_to_free_buffers(); remove clear_page_dirty() from
under ->private_lock. This seems to be safe, since ->private_lock is used to
serialize access to the buffers, not the page itself. This is needed because
clear_page_dirty() will call into page_mkclean() and would thereby violate
locking order.
[dhowells@redhat.com: Provide a page_mkclean() implementation for NOMMU]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Introduce a VM_BUG_ON, which is turned on with CONFIG_DEBUG_VM. Use this
in the lightweight, inline refcounting functions; PageLRU and PageActive
checks in vmscan, because they're pretty well confined to vmscan. And in
page allocate/free fastpaths which can be the hottest parts of the kernel
for kbuilds.
Unlike BUG_ON, VM_BUG_ON must not be used to execute statements with
side-effects, and should not be used outside core mm code.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Give non-highmem architectures access to the kmap API for the purposes of
overriding (this is what the attached patch does).
The proposal is that we should now require all architectures with coherence
issues to manage data coherence via the kmap/kunmap API. Thus driver
writers never have to write code like
kmap(page)
modify data in page
flush_kernel_dcache_page(page)
kunmap(page)
instead, kmap/kunmap will manage the coherence and driver (and filesystem)
writers don't need to worry about how to flush between kmap and kunmap.
For most architectures, the page only needs to be flushed if it was
actually written to *and* there are user mappings of it, so the best
implementation looks to be: clear the page dirty pte bit in the kernel page
tables on kmap and on kunmap, check page->mappings for user maps, and then
the dirty bit, and only flush if it both has user mappings and is dirty.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
get_cpu_var()/per_cpu()/__get_cpu_var() arguments must be simple
identifiers. Otherwise the arch dependent implementations might break.
This patch enforces the correct usage of the macros by producing a syntax
error if the variable is not a simple identifier.
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[NetLabel]: update docs with website information
[NetLabel]: rework the Netlink attribute handling (part 2)
[NetLabel]: rework the Netlink attribute handling (part 1)
[Netlink]: add nla_validate_nested()
[NETLINK]: add nla_for_each_nested() to the interface list
[NetLabel]: change the SELinux permissions
[NetLabel]: make the CIPSOv4 cache spinlocks bottom half safe
[NetLabel]: correct improper handling of non-NetLabel peer contexts
[TCP]: make cubic the default
[TCP]: default congestion control menu
[ATM] he: Fix __init/__devinit conflict
[NETFILTER]: Add dscp,DSCP headers to header-y
[DCCP]: Introduce dccp_probe
[DCCP]: Use constants for CCIDs
[DCCP]: Introduce constants for CCID numbers
[DCCP]: Allow default/fallback service code.
Assume that a cpu is *physically* offlined at boot time...
Because smpboot.c::smp_boot_cpu_map() canoot find cpu's sapicid,
numa.c::build_cpu_to_node_map() cannot build cpu<->node map for
offlined cpu.
For such cpus, cpu_to_node map should be fixed at cpu-hot-add.
This mapping should be done before cpu onlining.
This patch also handles cpu hotremove case.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
At the suggestion of Thomas Graf, rewrite NetLabel's use of Netlink attributes
to better follow the common Netlink attribute usage.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a new function, nla_validate_nested(), to validate nested Netlink
attributes.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
At the top of include/net/netlink.h is a list of Netlink interfaces, however,
the nla_for_each_nested() macro was not listed. This patch adds this interface
to the list at the top of the header file.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix a problem where NetLabel would always set the value of
sk_security_struct->peer_sid in selinux_netlbl_sock_graft() to the context of
the socket, causing problems when users would query the context of the
connection. This patch fixes this so that the value in
sk_security_struct->peer_sid is only set when the connection is NetLabel based,
otherwise the value is untouched.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
They all contain the same thing. Instead, have a single generic one in
include/asm-generic, and permit an arch to override as needed.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch adds xt_dscp.h and xt_DSCP.h to the kernel headers which are
exported via 'make headers_install'. These are necessary for userspace
to add rules using dscp match and DSCP target.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (28 commits)
ocfs2: Teach ocfs2_drop_lock() to use ->set_lvb() callback
ocfs2: Remove ->unblock lockres operation
ocfs2: move downconvert worker to lockres ops
ocfs2: Remove unused dlmglue functions
ocfs2: Have the metadata lock use generic dlmglue functions
ocfs2: Add ->set_lvb callback in dlmglue
ocfs2: Add ->check_downconvert callback in dlmglue
ocfs2: Check for refreshing locks in generic unblock function
ocfs2: don't unconditionally pass LVB flags
ocfs2: combine inode and generic blocking AST functions
ocfs2: Add ->get_osb() dlmglue locking operation
ocfs2: remove ->unlock_ast() callback from ocfs2_lock_res_ops
ocfs2: combine inode and generic AST functions
ocfs2: Clean up lock resource refresh flags
ocfs2: Remove i_generation from inode lock names
ocfs2: Encode i_generation in the meta data lvb
ocfs2: Free up some space in the lvb
ocfs2: Remove special casing for inode creation in ocfs2_dentry_attach_lock()
ocfs2: manually d_move() during ocfs2_rename()
[PATCH] Allow file systems to manually d_move() inside of ->rename()
...
Some file systems want to manually d_move() the dentries involved in a
rename. We can do this by making use of the FS_ODD_RENAME flag if we just
have nfs_rename() unconditionally do the d_move(). While there, we rename
the flag to be more descriptive.
OCFS2 uses this to protect that part of the rename operation with a cluster
lock.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
This has been discussed on dccp@vger and removes the necessity for applications
to supply service codes in each and every case.
If an application does not want to provide a service code, that's fine, it will
be given 0. Otherwise, service codes can be set via socket options as before.
This patch has been tested using various client/server configurations
(including listening on multiple service codes).
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (50 commits)
[libata] Delete pata_it8172 driver
[PATCH] libata: improve handling of diagostic fail (and hardware that misreports it)
[PATCH] libata: fix non-uniform ports handling
Fix libata resource conflict for legacy mode
[libata] ata_piix: build fix
[PATCH] pata_amd: Check enable bits on Nvidia
[PATCH] Update SiS PATA
[libata] Add pata_jmicron driver to Kconfig, Makefile
[libata #pata-drivers] Trim trailing whitespace.
[libata] Trim trailing whitespace.
[libata] Add a bunch of PATA drivers.
Rename libata-bmdma.c to libata-sff.c.
libata: Grand renaming.
Clean up drivers/ata/Kconfig a bit.
[PATCH] CONFIG_PM=n slim: drivers/scsi/sata_sil*
[PATCH] sata_via: Add SATA support for vt8237a
[PATCH] libata: change path to libata in libata.tmpl
[PATCH] libata: s/CONFIG_SCSI_SATA/CONFIG_[S]ATA/g in pci/quirks.c
libata: Make sure drivers/ata is a separate Kconfig menu
[libata] ata_piix: add missing kfree()
...
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (217 commits)
net/ieee80211: fix more crypto-related build breakage
[PATCH] Spidernet: add ethtool -S (show statistics)
[NET] GT96100: Delete bitrotting ethernet driver
[PATCH] mv643xx_eth: restrict to 32-bit PPC_MULTIPLATFORM
[PATCH] Cirrus Logic ep93xx ethernet driver
r8169: the MMIO region of the 8167 stands behin BAR#1
e1000, ixgb: Remove pointless wrappers
[PATCH] Remove powerpc specific parts of 3c509 driver
[PATCH] s2io: Switch to pci_get_device
[PATCH] gt96100: move to pci_get_device API
[PATCH] ehea: bugfix for register access functions
[PATCH] e1000 disable device on PCI error
drivers/net/phy/fixed: #if 0 some incomplete code
drivers/net: const-ify ethtool_ops declarations
[PATCH] ethtool: allow const ethtool_ops
[PATCH] sky2: big endian
[PATCH] sky2: fiber support
[PATCH] sky2: tx pause bug fix
drivers/net: Trim trailing whitespace
[PATCH] ehea: IBM eHEA Ethernet Device Driver
...
Manually resolved conflicts in drivers/net/ixgb/ixgb_main.c and
drivers/net/sky2.c related to CHECKSUM_HW/CHECKSUM_PARTIAL changes by
commit 84fa7933a3 that just happened to be
next to unrelated changes in this update.
Key more of the domain validation settings off the inquiry data from
the disk (in particular, don't try IU or DT unless the disk claims to
support them.
Also add a new dv_in_progress flag to prevent recursive DV.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa: (148 commits)
[ALSA] intel8x0m - Free irq in suspend
[ALSA] Move CONFIG_SND_AC97_POWER_SAVE to pci/Kconfig
[ALSA] usb-audio: add mixer control names for the Aureon 5.1 MkII
[ALSA] ES1938: remove duplicate field initialization
[ALSA] usb-audio: increase number of packets per URB
[ALSA] hda-codec - Fix headphone auto-toggle on sigmatel codec
[ALSA] hda-intel - A slight cleanup of timeout check in azx_get_response()
[ALSA] hda-codec - Fix mic input with STAC92xx codecs
[ALSA] mixart: Use SEEK_{SET,CUR,END} instead of hardcoded values
[ALSA] gus: Use SEEK_{SET,CUR,END} instead of hardcoded values
[ALSA] opl4: Use SEEK_{SET,CUR,END} instead of hardcoded values
[ALSA] sound core: Use SEEK_{SET,CUR,END} instead of hardcoded values
[ALSA] hda-codec - Support multiple headphone pins
[ALSA] hda_intel prefer 24bit instead of 20bit
[ALSA] hda-codec - Add vendor ids for Motorola and Conexant
[ALSA] hda-codec - Add device id for Motorola si3054-compatible codec
[ALSA] Add missing compat ioctls for ALSA control API
[ALSA] powermac - Fix Oops when conflicting with aoa driver
[ALSA] aoa: add locking to tas codec
[ALSA] hda-intel - Fix suspend/resume with MSI
...
* git://git.linux-nfs.org/pub/linux/nfs-2.6: (74 commits)
NFS: unmark NFS direct I/O as experimental
NFS: add comments clarifying the use of nfs_post_op_update()
NFSv4: rpc_mkpipe creating socket inodes w/out sk buffers
NFS: Use SEEK_END instead of hardcoded value
NFSv4: When mounting with a port=0 argument, substitute port=2049
NFSv4: Poll more aggressively when handling NFS4ERR_DELAY
NFSv4: Handle the condition NFS4ERR_FILE_OPEN
NFSv4: Retry lease recovery if it failed during a synchronous operation.
NFS: Don't invalidate the symlink we just stuffed into the cache
NFS: Make read() return an ESTALE if the file has been deleted
NFSv4: It's perfectly legal for clp to be NULL here....
NFS: nfs_lookup - don't hash dentry when optimising away the lookup
SUNRPC: Fix Oops in pmap_getport_done
SUNRPC: Add refcounting to the struct rpc_xprt
SUNRPC: Clean up soft task error handling
SUNRPC: Handle ENETUNREACH, EHOSTUNREACH and EHOSTDOWN socket errors
SUNRPC: rpc_delay() should not clobber the rpc_task->tk_status
Fix a referral error Oops
NFS: NFS_ROOT should use the new rpc_create API
NFS: Fix up compiler warnings on 64-bit platforms in client.c
...
Manually resolved conflict in net/sunrpc/xprtsock.c
Remove IPGA volume controls and merge the IPGA range to ADC volume
controls. These two volumes are not really independent but connected
simply in different ranges 0-0x7f and 0x80-max. It doesn't make sense
to provide two controls.
Since both 0x7f and 0x80 specify 0dB, a hack is needed for IPGA range
to skip 0x80 (increment one) for such controls.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This patch adds a new attribute, pcm_class, to each PCM sysfs entry.
It's useful to detect what kind of PCM stream is, for example, HAL
can check whether it's a modem or not.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Added the definition of TLV dB range compound. It contains one or
more dB-range or linear-volume TLV entries with min/max ranges.
Used for volume controls with non-linear curves.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Christoph Lameter