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* net: Remove unnecessary returns from void function()sJoe Perches2010-05-18
| | | | | | | | | | | | | | | | This patch removes from net/ (but not any netfilter files) all the unnecessary return; statements that precede the last closing brace of void functions. It does not remove the returns that are immediately preceded by a label as gcc doesn't like that. Done via: $ grep -rP --include=*.[ch] -l "return;\n}" net/ | \ xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }' Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* icmp: Account for ICMP out errorsEric Dumazet2010-04-03
| | | | | | | | | | | | | | | | | | When ip_append() fails because of socket limit or memory shortage, increment ICMP_MIB_OUTERRORS counter, so that "netstat -s" can report these errors. LANG=C netstat -s | grep "ICMP messages failed" 0 ICMP messages failed For IPV6, implement ICMP6_MIB_OUTERRORS counter as well. # grep Icmp6OutErrors /proc/net/dev_snmp6/* /proc/net/dev_snmp6/eth0:Icmp6OutErrors 0 /proc/net/dev_snmp6/lo:Icmp6OutErrors 0 Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* percpu: add __percpu sparse annotations to netTejun Heo2010-02-17
| | | | | | | | | | | | | | | | | | | | | | Add __percpu sparse annotations to net. These annotations are to make sparse consider percpu variables to be in a different address space and warn if accessed without going through percpu accessors. This patch doesn't affect normal builds. The macro and type tricks around snmp stats make things a bit interesting. DEFINE/DECLARE_SNMP_STAT() macros mark the target field as __percpu and SNMP_UPD_PO_STATS() macro is updated accordingly. All snmp_mib_*() users which used to cast the argument to (void **) are updated to cast it to (void __percpu **). Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Vlad Yasevich <vladislav.yasevich@hp.com> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
* net: constify MIB name tablesAlexey Dobriyan2010-01-23
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: spread __net_init, __net_exitAlexey Dobriyan2010-01-17
| | | | | | | | | | | __net_init/__net_exit are apparently not going away, so use them to full extent. In some cases __net_init was removed, because it was called from __net_exit code. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* NET: ipv6, remove unnecessary checkJiri Slaby2010-01-10
| | | | | | | | | | | | | | | | | Stanse found a potential null dereference in snmp6_unregister_dev. There is a check for idev being NULL, but it is dereferenced earlier. But idev cannot be NULL when passed to snmp6_unregister_dev, so remove the test. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: "Pekka Savola (ipv6)" <pekkas@netcore.fi> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
* net: mark read-only arrays as constJan Engelhardt2009-08-05
| | | | | | | | String literals are constant, and usually, we can also tag the array of pointers const too, moving it to the .rodata section. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* snmp: add missing counters for RFC 4293Neil Horman2009-04-27
| | | | | | | | | | | | | | The IP MIB (RFC 4293) defines stats for InOctets, OutOctets, InMcastOctets and OutMcastOctets: http://tools.ietf.org/html/rfc4293 But it seems we don't track those in any way that easy to separate from other protocols. This patch adds those missing counters to the stats file. Tested successfully by me With help from Eric Dumazet. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fix tiny output corruption of /proc/net/snmp6Alexey Dobriyan2008-11-20
| | | | | | | | | | | Because "name" is static, it can be occasionally be filled with somewhat garbage if two processes read /proc/net/snmp6. Also, remove useless casts and "-1" -- snprintf() correctly terminates it's output. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: making ip and icmp statistics per/namespaceDenis V. Lunev2008-10-08
| | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: make uplitev6 mib per/namespaceDenis V. Lunev2008-10-07
| | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: make udpv6 mib per/namespaceDenis V. Lunev2008-10-07
| | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: allow per device ipv6 snmp statistics in non-initial namespaceDenis V. Lunev2008-10-07
| | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: register global ipv6 mibs statistics in each namespaceDenis V. Lunev2008-10-07
| | | | | | | Unused net variable will become used very soon. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: separate seq_ops for global & per/device ipv6 statisticsDenis V. Lunev2008-10-07
| | | | | | | | | | | | | | | idev has been stored on seq->private. NULL has been stored for global statistics. The situation is changed with net namespace. We need to store pointer to struct net and the only place is seq->private. So, we'll have for /proc/net/dev_snmp6/* and for /proc/net/snmp6 pointers of two different types stored in the same field. This effectively requires to separate seq_ops of these files. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: consolidate ipv6 sock_stat code at the beginning of net/ipv6/proc.cDenis V. Lunev2008-10-07
| | | | | | | | | Simple, comsolidate sockstat6 staff in one place, at the beginning of the file. Right now sockstat6_seq_open/sockstat6_seq_fops looks like an intrusion in the middle of snmp6 code. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: register /proc/net/dev_snmp6/* in each nsDenis V. Lunev2008-10-07
| | | | | | | Do the same for /proc/net/snmp6. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: move /proc/net/dev_snmp6 to struct netDenis V. Lunev2008-10-07
| | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: Fix useless proc net sockstat6 removalDaniel Lezcano2008-07-30
| | | | | | | | This call is no longer needed, sockstat6 is per namespace so it is removed at the namespace subsystem destruction. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: Use net_eq() to compare net-namespaces for optimization.YOSHIFUJI Hideaki2008-07-20
| | | | | | | | Without CONFIG_NET_NS, namespace is always &init_net. Compiler will be able to omit namespace comparisons with this patch. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* proc: consolidate per-net single-release callersPavel Emelyanov2008-07-18
| | | | | | | They are symmetrical to single_open ones :) Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* proc: consolidate per-net single_open callersPavel Emelyanov2008-07-18
| | | | | | | There are already 7 of them - time to kill some duplicate code. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: remove CVS keywordsAdrian Bunk2008-06-12
| | | | | | | | This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: assign PDE->data before gluing PDE into /proc treeDenis V. Lunev2008-05-02
| | | | | | | Simply replace proc_create and further data assigned with proc_create_data. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6][NETNS]: Display per-net info in sockstat6 file.Pavel Emelyanov2008-03-31
| | | | | | | | Do with the sockstat6 file what we've already done for the sockstat. Same good side effect - ipv6 reassembling stats are now shown per-net. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SOCK][NETNS]: Register sockstat(6) files in each net.Pavel Emelyanov2008-03-31
| | | | | | | | Currently they live in init_net only, but now almost all the info they can provide is available per-net. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SOCK][NETNS]: Add a struct net argument to sock_prot_inuse_add and _get.Pavel Emelyanov2008-03-31
| | | | | | | | | | | | | | This counter is about to become per-proto-and-per-net, so we'll need two arguments to determine which cell in this "table" to work with. All the places, but proc already pass proper net to it - proc will be tuned a bit later. Some indentation with spaces in proc files is done to keep the file coding style consistent. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.YOSHIFUJI Hideaki2008-03-25
| | | | | | | | Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [UDP]: Revert udplite and code split.David S. Miller2008-03-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit db1ed684f6c430c4cdad67d058688b8a1b5e607c ("[IPV6] UDP: Rename IPv6 UDP files."), commit 8be8af8fa4405652e6c0797db5465a4be8afb998 ("[IPV4] UDP: Move IPv4-specific bits to other file.") and commit e898d4db2749c6052072e9bc4448e396cbdeb06a ("[UDP]: Allow users to configure UDP-Lite."). First, udplite is of such small cost, and it is a core protocol just like TCP and normal UDP are. We spent enormous amounts of effort to make udplite share as much code with core UDP as possible. All of that work is less valuable if we're just going to slap a config option on udplite support. It is also causing build failures, as reported on linux-next, showing that the changeset was not tested very well. In fact, this is the second build failure resulting from the udplite change. Finally, the config options provided was a bool, instead of a modular option. Meaning the udplite code does not even get build tested by allmodconfig builds, and furthermore the user is not presented with a reasonable modular build option which is particularly needed by distribution vendors. Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS][IPV6] proc - protect snmp6 from non-init_net callsDaniel Lezcano2008-03-05
| | | | | | | | This patchset avoids creation of the /proc entry for snmp6 when the call is made from a network namespace different from the init_net. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [UDP]: Allow users to configure UDP-Lite.YOSHIFUJI Hideaki2008-03-04
| | | | | | | | | | | | | | | | Let's give users an option for disabling UDP-Lite (~4K). old: | text data bss dec hex filename | 286498 12432 6072 305002 4a76a net/ipv4/built-in.o | 193830 8192 3204 205226 321aa net/ipv6/ipv6.o new (without UDP-Lite): | text data bss dec hex filename | 284086 12136 5432 301654 49a56 net/ipv4/built-in.o | 191835 7832 3076 202743 317f7 net/ipv6/ipv6.o Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [IPV6]: Use proc_create() to setup ->proc_fops firstWang Chen2008-02-28
| | | | | | | | Use proc_create() to make sure that ->proc_fops be setup before gluing PDE to main tree. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS][FRAGS]: Make the mem counter per-namespace.Pavel Emelyanov2008-01-28
| | | | | | | | This is also simple, but introduces more changes, since then mem counter is altered in more places. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS][FRAGS]: Make the nqueues counter per-namespace.Pavel Emelyanov2008-01-28
| | | | | | | | This is simple - just move the variable from struct inet_frags to struct netns_frags and adjust the usage appropriately. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: prot_inuse cleanups and optimizationsEric Dumazet2008-01-28
| | | | | | | | | | | | | | | | | | | | 1) Cleanups (all functions are prefixed by sock_prot_inuse) sock_prot_inc_use(prot) -> sock_prot_inuse_add(prot,-1) sock_prot_dec_use(prot) -> sock_prot_inuse_add(prot,-1) sock_prot_inuse() -> sock_prot_inuse_get() New functions : sock_prot_inuse_init() and sock_prot_inuse_free() to abstract pcounter use. 2) if CONFIG_PROC_FS=n, we can zap 'inuse' member from "struct proto", since nobody wants to read the inuse value. This saves 1372 bytes on i386/SMP and some cpu cycles. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [UDP]: Restore missing inDatagrams incrementsHerbert Xu2008-01-28
| | | | | | | | | | | The previous move of the the UDP inDatagrams counter caused the counting of encapsulated packets, SUNRPC data (as opposed to call) packets and RXRPC packets to go missing. This patch restores all of these. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: RFC 2011 compatibility brokenWang Chen2008-01-21
| | | | | | | | | The snmp6 entry name was changed, and it broke compatibility to RFC 2011. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Define infrastructure to keep 'inuse' changes in an efficent SMP/NUMA ↵Eric Dumazet2007-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | way. "struct proto" currently uses an array stats[NR_CPUS] to track change on 'inuse' sockets per protocol. If NR_CPUS is big, this means we use a big memory area for this. Moreover, all this memory area is located on a single node on NUMA machines, increasing memory pressure on the boot node. In this patch, I tried to : - Keep a fast !CONFIG_SMP implementation - Keep a fast CONFIG_SMP implementation for often used protocols (tcp,udp,raw,...) - Introduce a NUMA efficient implementation Some helper macros are defined in include/net/sock.h These macros take into account CONFIG_SMP If a "struct proto" is declared without using DEFINE_PROTO_INUSE / REF_PROTO_INUSE macros, it will automatically use a default implementation, using a dynamically allocated percpu zone. This default implementation will be NUMA efficient, but might use 32/64 bytes per possible cpu because of current alloc_percpu() implementation. However it still should be better than previous implementation based on stats[NR_CPUS] field. When a "struct proto" is changed to use the new macros, we use a single static "int" percpu variable, lowering the memory and cpu costs, still preserving NUMA efficiency. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [INET]: Collect frag queues management objects togetherPavel Emelyanov2007-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | There are some objects that are common in all the places which are used to keep track of frag queues, they are: * hash table * LRU list * rw lock * rnd number for hash function * the number of queues * the amount of memory occupied by queues * secret timer Move all this stuff into one structure (struct inet_frags) to make it possible use them uniformly in the future. Like with the previous patch this mostly consists of hunks like - write_lock(&ipfrag_lock); + write_lock(&ip4_frags.lock); To address the issue with exporting the number of queues and the amount of memory occupied by queues outside the .c file they are declared in, I introduce a couple of helpers. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: Add ICMPMsgStats MIB (RFC 4293) [rev 2]David L Stevens2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Background: RFC 4293 deprecates existing individual, named ICMP type counters to be replaced with the ICMPMsgStatsTable. This table includes entries for both IPv4 and IPv6, and requires counting of all ICMP types, whether or not the machine implements the type. These patches "remove" (but not really) the existing counters, and replace them with the ICMPMsgStats tables for v4 and v6. It includes the named counters in the /proc places they were, but gets the values for them from the new tables. It also counts packets generated from raw socket output (e.g., OutEchoes, MLD queries, RA's from radvd, etc). Changes: 1) create icmpmsg_statistics mib 2) create icmpv6msg_statistics mib 3) modify existing counters to use these 4) modify /proc/net/snmp to add "IcmpMsg" with all ICMP types listed by number for easy SNMP parsing 5) modify /proc/net/snmp printing for "Icmp" to get the named data from new counters. [new to 2nd revision] 6) support per-interface ICMP stats 7) use common macro for per-device stat macros Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make /proc/net per network namespaceEric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | This patch makes /proc/net per network namespace. It modifies the global variables proc_net and proc_net_stat to be per network namespace. The proc_net file helpers are modified to take a network namespace argument, and all of their callers are fixed to pass &init_net for that argument. This ensures that all of the /proc/net files are only visible and usable in the initial network namespace until the code behind them has been updated to be handle multiple network namespaces. Making /proc/net per namespace is necessary as at least some files in /proc/net depend upon the set of network devices which is per network namespace, and even more files in /proc/net have contents that are relevant to a single network namespace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: Track device renames in snmp6.Stephen Hemminger2007-04-29
| | | | | | | | | | | When network device's are renamed, the IPV6 snmp6 code gets confused. It doesn't track name changes so it will OOPS when network device's are removed. The fix is trivial, just unregister/re-register in notify handler. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: Consolidate common SNMP codeHerbert Xu2007-04-26
| | | | | | | | | | | | | | | This patch moves the non-proc SNMP code into addrconf.c and reuses IPv4 SNMP code where applicable. As a result we can skip proc.o if /proc is disabled. Note that I've made a number of functions static since they're only used by addrconf.c for now. If they ever get used elsewhere we can always remove the static. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] SNMP: Use put_unaligned() instead of memcpy().YOSHIFUJI Hideaki2007-04-26
| | | | | | | Hint from David Miller <davem@davemloft.net>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] SNMP: Avoid unaligned accesses.YOSHIFUJI Hideaki2007-04-26
| | | | | | | | Because stats pointer may not be aligned for u64, use memcpy to fill u64 values. Issue reported by David Miller <davem@davemloft.net>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [IPV6] SNMP: Export statistics via netlink without CONFIG_PROC_FS.YOSHIFUJI Hideaki2007-04-26
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] SNMP: Move some statistic bits to net/ipv6/proc.c.YOSHIFUJI Hideaki2007-04-26
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] SNMP: Netlink interface.YOSHIFUJI Hideaki2007-04-26
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] remove many unneeded #includes of sched.hTim Schmielau2007-02-14
| | | | | | | | | | | | | | | | | | | | | | | | After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] mark struct file_operations const 7Arjan van de Ven2007-02-12
| | | | | | | | | | | Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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