)]}'
{
  "log": [
    {
      "commit": "e1ad7468c77ddb94b0615d5f50fa255525fde0f0",
      "tree": "856be1a028fece7e1fa10b7b585096839913fe2e",
      "parents": [
        "83f5d1266926c75890f1bc4678e49d79483cb573"
      ],
      "author": {
        "name": "Davide Libenzi",
        "email": "davidel@xmailserver.org",
        "time": "Thu May 10 22:23:19 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri May 11 08:29:36 2007 -0700"
      },
      "message": "signal/timer/event: eventfd core\n\nThis is a very simple and light file descriptor, that can be used as event\nwait/dispatch by userspace (both wait and dispatch) and by the kernel\n(dispatch only).  It can be used instead of pipe(2) in all cases where those\nwould simply be used to signal events.  Their kernel overhead is much lower\nthan pipes, and they do not consume two fds.  When used in the kernel, it can\noffer an fd-bridge to enable, for example, functionalities like KAIO or\nsyslets/threadlets to signal to an fd the completion of certain operations.\nBut more in general, an eventfd can be used by the kernel to signal readiness,\nin a POSIX poll/select way, of interfaces that would otherwise be incompatible\nwith it.  The API is:\n\nint eventfd(unsigned int count);\n\nThe eventfd API accepts an initial \"count\" parameter, and returns an eventfd\nfd.  It supports poll(2) (POLLIN, POLLOUT, POLLERR), read(2) and write(2).\n\nThe POLLIN flag is raised when the internal counter is greater than zero.\n\nThe POLLOUT flag is raised when at least a value of \"1\" can be written to the\ninternal counter.\n\nThe POLLERR flag is raised when an overflow in the counter value is detected.\n\nThe write(2) operation can never overflow the counter, since it blocks (unless\nO_NONBLOCK is set, in which case -EAGAIN is returned).\n\nBut the eventfd_signal() function can do it, since it\u0027s supposed to not sleep\nduring its operation.\n\nThe read(2) function reads the __u64 counter value, and reset the internal\nvalue to zero.  If the value read is equal to (__u64) -1, an overflow happened\non the internal counter (due to 2^64 eventfd_signal() posts that has never\nbeen retired - unlickely, but possible).\n\nThe write(2) call writes an __u64 count value, and adds it to the current\ncounter.  The eventfd fd supports O_NONBLOCK also.\n\nOn the kernel side, we have:\n\nstruct file *eventfd_fget(int fd);\nint eventfd_signal(struct file *file, unsigned int n);\n\nThe eventfd_fget() should be called to get a struct file* from an eventfd fd\n(this is an fget() + check of f_op being an eventfd fops pointer).\n\nThe kernel can then call eventfd_signal() every time it wants to post an event\nto userspace.  The eventfd_signal() function can be called from any context.\nAn eventfd() simple test and bench is available here:\n\nhttp://www.xmailserver.org/eventfd-bench.c\n\nThis is the eventfd-based version of pipetest-4 (pipe(2) based):\n\nhttp://www.xmailserver.org/pipetest-4.c\n\nNot that performance matters much in the eventfd case, but eventfd-bench\nshows almost as double as performance than pipetest-4.\n\n[akpm@linux-foundation.org: fix i386 build]\n[akpm@linux-foundation.org: add sys_eventfd to sys_ni.c]\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b215e283992899650c4271e7385c79e26fb9a88e",
      "tree": "3f950814510422606821f1b0b373d65e4d9ed303",
      "parents": [
        "6d18c9220965b437287c3a7e803725c24992ceac"
      ],
      "author": {
        "name": "Davide Libenzi",
        "email": "davidel@xmailserver.org",
        "time": "Thu May 10 22:23:16 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri May 11 08:29:36 2007 -0700"
      },
      "message": "signal/timer/event: timerfd core\n\nThis patch introduces a new system call for timers events delivered though\nfile descriptors.  This allows timer event to be used with standard POSIX\npoll(2), select(2) and read(2).  As a consequence of supporting the Linux\nf_op-\u003epoll subsystem, they can be used with epoll(2) too.\n\nThe system call is defined as:\n\nint timerfd(int ufd, int clockid, int flags, const struct itimerspec *utmr);\n\nThe \"ufd\" parameter allows for re-use (re-programming) of an existing timerfd\nw/out going through the close/open cycle (same as signalfd).  If \"ufd\" is -1,\ns new file descriptor will be created, otherwise the existing \"ufd\" will be\nre-programmed.\n\nThe \"clockid\" parameter is either CLOCK_MONOTONIC or CLOCK_REALTIME.  The time\nspecified in the \"utmr-\u003eit_value\" parameter is the expiry time for the timer.\n\nIf the TFD_TIMER_ABSTIME flag is set in \"flags\", this is an absolute time,\notherwise it\u0027s a relative time.\n\nIf the time specified in the \"utmr-\u003eit_interval\" is not zero (.tv_sec \u003d\u003d 0,\ntv_nsec \u003d\u003d 0), this is the period at which the following ticks should be\ngenerated.\n\nThe \"utmr-\u003eit_interval\" should be set to zero if only one tick is requested.\nSetting the \"utmr-\u003eit_value\" to zero will disable the timer, or will create a\ntimerfd without the timer enabled.\n\nThe function returns the new (or same, in case \"ufd\" is a valid timerfd\ndescriptor) file, or -1 in case of error.\n\nAs stated before, the timerfd file descriptor supports poll(2), select(2) and\nepoll(2).  When a timer event happened on the timerfd, a POLLIN mask will be\nreturned.\n\nThe read(2) call can be used, and it will return a u32 variable holding the\nnumber of \"ticks\" that happened on the interface since the last call to\nread(2).  The read(2) call supportes the O_NONBLOCK flag too, and EAGAIN will\nbe returned if no ticks happened.\n\nA quick test program, shows timerfd working correctly on my amd64 box:\n\nhttp://www.xmailserver.org/timerfd-test.c\n\n[akpm@linux-foundation.org: add sys_timerfd to sys_ni.c]\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "fba2afaaec790dc5ab4ae8827972f342211bbb86",
      "tree": "2694d4cd8c6b7d69a5569b92151d61a3d4af39b7",
      "parents": [
        "5dc8bf8132d59c03fe2562bce165c2f03f021687"
      ],
      "author": {
        "name": "Davide Libenzi",
        "email": "davidel@xmailserver.org",
        "time": "Thu May 10 22:23:13 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri May 11 08:29:36 2007 -0700"
      },
      "message": "signal/timer/event: signalfd core\n\nThis patch series implements the new signalfd() system call.\n\nI took part of the original Linus code (and you know how badly it can be\nbroken :), and I added even more breakage ;) Signals are fetched from the same\nsignal queue used by the process, so signalfd will compete with standard\nkernel delivery in dequeue_signal().  If you want to reliably fetch signals on\nthe signalfd file, you need to block them with sigprocmask(SIG_BLOCK).  This\nseems to be working fine on my Dual Opteron machine.  I made a quick test\nprogram for it:\n\nhttp://www.xmailserver.org/signafd-test.c\n\nThe signalfd() system call implements signal delivery into a file descriptor\nreceiver.  The signalfd file descriptor if created with the following API:\n\nint signalfd(int ufd, const sigset_t *mask, size_t masksize);\n\nThe \"ufd\" parameter allows to change an existing signalfd sigmask, w/out going\nto close/create cycle (Linus idea).  Use \"ufd\" \u003d\u003d -1 if you want a brand new\nsignalfd file.\n\nThe \"mask\" allows to specify the signal mask of signals that we are interested\nin.  The \"masksize\" parameter is the size of \"mask\".\n\nThe signalfd fd supports the poll(2) and read(2) system calls.  The poll(2)\nwill return POLLIN when signals are available to be dequeued.  As a direct\nconsequence of supporting the Linux poll subsystem, the signalfd fd can use\nused together with epoll(2) too.\n\nThe read(2) system call will return a \"struct signalfd_siginfo\" structure in\nthe userspace supplied buffer.  The return value is the number of bytes copied\nin the supplied buffer, or -1 in case of error.  The read(2) call can also\nreturn 0, in case the sighand structure to which the signalfd was attached,\nhas been orphaned.  The O_NONBLOCK flag is also supported, and read(2) will\nreturn -EAGAIN in case no signal is available.\n\nIf the size of the buffer passed to read(2) is lower than sizeof(struct\nsignalfd_siginfo), -EINVAL is returned.  A read from the signalfd can also\nreturn -ERESTARTSYS in case a signal hits the process.  The format of the\nstruct signalfd_siginfo is, and the valid fields depends of the (-\u003ecode \u0026\n__SI_MASK) value, in the same way a struct siginfo would:\n\nstruct signalfd_siginfo {\n\t__u32 signo;\t/* si_signo */\n\t__s32 err;\t/* si_errno */\n\t__s32 code;\t/* si_code */\n\t__u32 pid;\t/* si_pid */\n\t__u32 uid;\t/* si_uid */\n\t__s32 fd;\t/* si_fd */\n\t__u32 tid;\t/* si_fd */\n\t__u32 band;\t/* si_band */\n\t__u32 overrun;\t/* si_overrun */\n\t__u32 trapno;\t/* si_trapno */\n\t__s32 status;\t/* si_status */\n\t__s32 svint;\t/* si_int */\n\t__u64 svptr;\t/* si_ptr */\n\t__u64 utime;\t/* si_utime */\n\t__u64 stime;\t/* si_stime */\n\t__u64 addr;\t/* si_addr */\n};\n\n[akpm@linux-foundation.org: fix signalfd_copyinfo() on i386]\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "97416ce82e20a9511ec369822098a8d20998398a",
      "tree": "a8ecca47df90e5844853b3578aac6e72ba2694f8",
      "parents": [
        "01f41ec7b36e14da18a4e162ef697ae358f36e37"
      ],
      "author": {
        "name": "Stephen Rothwell",
        "email": "sfr@canb.auug.org.au",
        "time": "Wed May 09 02:32:35 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Wed May 09 12:30:44 2007 -0700"
      },
      "message": "Declare {compat_}sys_utimensat\n\nThis is needed before Powerpc can wire up the syscall.\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b611967de4dc5c52049676c4369dcac622a7cdfe",
      "tree": "8c19038c8bbaa4851dcb99bed33707deaf5170d1",
      "parents": [
        "0f836e5fecf59d0d0353e9af11fd14a32a3001ae"
      ],
      "author": {
        "name": "Davide Libenzi",
        "email": "davidel@xmailserver.org",
        "time": "Wed Oct 11 01:21:44 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Oct 11 11:14:21 2006 -0700"
      },
      "message": "[PATCH] epoll_pwait()\n\nImplement the epoll_pwait system call, that extend the event wait mechanism\nwith the same logic ppoll and pselect do.  The definition of epoll_pwait\nis:\n\nint epoll_pwait(int epfd, struct epoll_event *events, int maxevents,\n                 int timeout, const sigset_t *sigmask, size_t sigsetsize);\n\nThe difference between the vanilla epoll_wait and epoll_pwait is that the\nlatter allows the caller to specify a signal mask to be set while waiting\nfor events.  Hence epoll_pwait will wait until either one monitored event,\nor an unmasked signal happen.  If sigmask is NULL, the epoll_pwait system\ncall will act exactly like epoll_wait.  For the POSIX definition of\npselect, information is available here:\n\nhttp://www.opengroup.org/onlinepubs/009695399/functions/select.html\n\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Michael Kerrisk \u003cmtk-manpages@gmx.net\u003e\nCc: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "ba46df984b8e8114c3cf19c51670fab084bd4196",
      "tree": "ed41e3a2278dfc22bd7fda59e99d8c74af8f429d",
      "parents": [
        "28c4dadd3a7221f5b9cd5c7d03c499788b193353"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@ftp.linux.org.uk",
        "time": "Tue Oct 10 22:46:07 2006 +0100"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Oct 10 15:37:22 2006 -0700"
      },
      "message": "[PATCH] __user annotations: futex\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "3db03b4afb3ecd66a0399b8ba57742ca953b0ecd",
      "tree": "fe0bd5c3663c58583f0181e2673d569c2df664e7",
      "parents": [
        "6760856791c6e527da678021ee6a67896549d4da"
      ],
      "author": {
        "name": "Arnd Bergmann",
        "email": "arnd@arndb.de",
        "time": "Mon Oct 02 02:18:31 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Oct 02 07:57:23 2006 -0700"
      },
      "message": "[PATCH] rename the provided execve functions to kernel_execve\n\nSome architectures provide an execve function that does not set errno, but\ninstead returns the result code directly.  Rename these to kernel_execve to\nget the right semantics there.  Moreover, there is no reasone for any of these\narchitectures to still provide __KERNEL_SYSCALLS__ or _syscallN macros, so\nremove these right away.\n\n[akpm@osdl.org: build fix]\n[bunk@stusta.de: build fix]\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nAcked-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Ian Molton \u003cspyro@f2s.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: Hirokazu Takata \u003ctakata.hirokazu@renesas.com\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Kazumoto Kojima \u003ckkojima@rr.iij4u.or.jp\u003e\nCc: Richard Curnow \u003crc@rc0.org.uk\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Paolo \u0027Blaisorblade\u0027 Giarrusso \u003cblaisorblade@yahoo.it\u003e\nCc: Miles Bader \u003cuclinux-v850@lsi.nec.co.jp\u003e\nCc: Chris Zankel \u003cchris@zankel.net\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "e04da1dfd9041e306cb33d1b40b6005c23c5b325",
      "tree": "2e9c1a183d9cde4e9a3dfae5591f203fedb7b32b",
      "parents": [
        "0891a8d706d6e6838a926b6dec42f95581747d0e"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@ftp.linux.org.uk",
        "time": "Fri Sep 29 01:58:35 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Sep 29 09:18:03 2006 -0700"
      },
      "message": "[PATCH] sys_getcpu() prototype annotated\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "3cfc348bf90ffaa777c188652aa297f04eb94de8",
      "tree": "8908d6a5a61e54ab422ec7f4800d6ac591695423",
      "parents": [
        "c08c820508233b424deab3302bc404bbecc6493a"
      ],
      "author": {
        "name": "Andi Kleen",
        "email": "ak@suse.de",
        "time": "Tue Sep 26 10:52:28 2006 +0200"
      },
      "committer": {
        "name": "Andi Kleen",
        "email": "andi@basil.nowhere.org",
        "time": "Tue Sep 26 10:52:28 2006 +0200"
      },
      "message": "[PATCH] x86: Add portable getcpu call\n\nFor NUMA optimization and some other algorithms it is useful to have a fast\nto get the current CPU and node numbers in user space.\n\nx86-64 added a fast way to do this in a vsyscall. This adds a generic\nsyscall for other architectures to make it a generic portable facility.\n\nI expect some of them will also implement it as a faster vsyscall.\n\nThe cache is an optimization for the x86-64 vsyscall optimization. Since\nwhat the syscall returns is an approximation anyways and user space\noften wants very fast results it can be cached for some time.  The norma\nmethods to get this information in user space are relatively slow\n\nThe vsyscall is in a better position to manage the cache because it has direct\naccess to a fast time stamp (jiffies). For the generic syscall optimization\nit doesn\u0027t help much, but enforce a valid argument to keep programs\nportable\n\nI only added an i386 syscall entry for now. Other architectures can follow\nas needed.\n\nAK: Also added some cleanups from Andrew Morton\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\n"
    },
    {
      "commit": "e2970f2fb6950183a34e8545faa093eb49d186e1",
      "tree": "a4035274368d846488a3b0152925502c06b064b0",
      "parents": [
        "66e5393a78b3fcca63e7748e38221dcca61c4aab"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jun 27 02:54:47 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Jun 27 17:32:46 2006 -0700"
      },
      "message": "[PATCH] pi-futex: futex code cleanups\n\nWe are pleased to announce \"lightweight userspace priority inheritance\" (PI)\nsupport for futexes.  The following patchset and glibc patch implements it,\nontop of the robust-futexes patchset which is included in 2.6.16-mm1.\n\nWe are calling it lightweight for 3 reasons:\n\n - in the user-space fastpath a PI-enabled futex involves no kernel work\n   (or any other PI complexity) at all.  No registration, no extra kernel\n   calls - just pure fast atomic ops in userspace.\n\n - in the slowpath (in the lock-contention case), the system call and\n   scheduling pattern is in fact better than that of normal futexes, due to\n   the \u0027integrated\u0027 nature of FUTEX_LOCK_PI.  [more about that further down]\n\n - the in-kernel PI implementation is streamlined around the mutex\n   abstraction, with strict rules that keep the implementation relatively\n   simple: only a single owner may own a lock (i.e.  no read-write lock\n   support), only the owner may unlock a lock, no recursive locking, etc.\n\n  Priority Inheritance - why, oh why???\n  -------------------------------------\n\nMany of you heard the horror stories about the evil PI code circling Linux for\nyears, which makes no real sense at all and is only used by buggy applications\nand which has horrible overhead.  Some of you have dreaded this very moment,\nwhen someone actually submits working PI code ;-)\n\nSo why would we like to see PI support for futexes?\n\nWe\u0027d like to see it done purely for technological reasons.  We dont think it\u0027s\na buggy concept, we think it\u0027s useful functionality to offer to applications,\nwhich functionality cannot be achieved in other ways.  We also think it\u0027s the\nright thing to do, and we think we\u0027ve got the right arguments and the right\nnumbers to prove that.  We also believe that we can address all the\ncounter-arguments as well.  For these reasons (and the reasons outlined below)\nwe are submitting this patch-set for upstream kernel inclusion.\n\nWhat are the benefits of PI?\n\n  The short reply:\n  ----------------\n\nUser-space PI helps achieving/improving determinism for user-space\napplications.  In the best-case, it can help achieve determinism and\nwell-bound latencies.  Even in the worst-case, PI will improve the statistical\ndistribution of locking related application delays.\n\n  The longer reply:\n  -----------------\n\nFirstly, sharing locks between multiple tasks is a common programming\ntechnique that often cannot be replaced with lockless algorithms.  As we can\nsee it in the kernel [which is a quite complex program in itself], lockless\nstructures are rather the exception than the norm - the current ratio of\nlockless vs.  locky code for shared data structures is somewhere between 1:10\nand 1:100.  Lockless is hard, and the complexity of lockless algorithms often\nendangers to ability to do robust reviews of said code.  I.e.  critical RT\napps often choose lock structures to protect critical data structures, instead\nof lockless algorithms.  Furthermore, there are cases (like shared hardware,\nor other resource limits) where lockless access is mathematically impossible.\n\nMedia players (such as Jack) are an example of reasonable application design\nwith multiple tasks (with multiple priority levels) sharing short-held locks:\nfor example, a highprio audio playback thread is combined with medium-prio\nconstruct-audio-data threads and low-prio display-colory-stuff threads.  Add\nvideo and decoding to the mix and we\u0027ve got even more priority levels.\n\nSo once we accept that synchronization objects (locks) are an unavoidable fact\nof life, and once we accept that multi-task userspace apps have a very fair\nexpectation of being able to use locks, we\u0027ve got to think about how to offer\nthe option of a deterministic locking implementation to user-space.\n\nMost of the technical counter-arguments against doing priority inheritance\nonly apply to kernel-space locks.  But user-space locks are different, there\nwe cannot disable interrupts or make the task non-preemptible in a critical\nsection, so the \u0027use spinlocks\u0027 argument does not apply (user-space spinlocks\nhave the same priority inversion problems as other user-space locking\nconstructs).  Fact is, pretty much the only technique that currently enables\ngood determinism for userspace locks (such as futex-based pthread mutexes) is\npriority inheritance:\n\nCurrently (without PI), if a high-prio and a low-prio task shares a lock [this\nis a quite common scenario for most non-trivial RT applications], even if all\ncritical sections are coded carefully to be deterministic (i.e.  all critical\nsections are short in duration and only execute a limited number of\ninstructions), the kernel cannot guarantee any deterministic execution of the\nhigh-prio task: any medium-priority task could preempt the low-prio task while\nit holds the shared lock and executes the critical section, and could delay it\nindefinitely.\n\n  Implementation:\n  ---------------\n\nAs mentioned before, the userspace fastpath of PI-enabled pthread mutexes\ninvolves no kernel work at all - they behave quite similarly to normal\nfutex-based locks: a 0 value means unlocked, and a value\u003d\u003dTID means locked.\n(This is the same method as used by list-based robust futexes.) Userspace uses\natomic ops to lock/unlock these mutexes without entering the kernel.\n\nTo handle the slowpath, we have added two new futex ops:\n\n  FUTEX_LOCK_PI\n  FUTEX_UNLOCK_PI\n\nIf the lock-acquire fastpath fails, [i.e.  an atomic transition from 0 to TID\nfails], then FUTEX_LOCK_PI is called.  The kernel does all the remaining work:\nif there is no futex-queue attached to the futex address yet then the code\nlooks up the task that owns the futex [it has put its own TID into the futex\nvalue], and attaches a \u0027PI state\u0027 structure to the futex-queue.  The pi_state\nincludes an rt-mutex, which is a PI-aware, kernel-based synchronization\nobject.  The \u0027other\u0027 task is made the owner of the rt-mutex, and the\nFUTEX_WAITERS bit is atomically set in the futex value.  Then this task tries\nto lock the rt-mutex, on which it blocks.  Once it returns, it has the mutex\nacquired, and it sets the futex value to its own TID and returns.  Userspace\nhas no other work to perform - it now owns the lock, and futex value contains\nFUTEX_WAITERS|TID.\n\nIf the unlock side fastpath succeeds, [i.e.  userspace manages to do a TID -\u003e\n0 atomic transition of the futex value], then no kernel work is triggered.\n\nIf the unlock fastpath fails (because the FUTEX_WAITERS bit is set), then\nFUTEX_UNLOCK_PI is called, and the kernel unlocks the futex on the behalf of\nuserspace - and it also unlocks the attached pi_state-\u003ert_mutex and thus wakes\nup any potential waiters.\n\nNote that under this approach, contrary to other PI-futex approaches, there is\nno prior \u0027registration\u0027 of a PI-futex.  [which is not quite possible anyway,\ndue to existing ABI properties of pthread mutexes.]\n\nAlso, under this scheme, \u0027robustness\u0027 and \u0027PI\u0027 are two orthogonal properties\nof futexes, and all four combinations are possible: futex, robust-futex,\nPI-futex, robust+PI-futex.\n\n  glibc support:\n  --------------\n\nUlrich Drepper and Jakub Jelinek have written glibc support for PI-futexes\n(and robust futexes), enabling robust and PI (PTHREAD_PRIO_INHERIT) POSIX\nmutexes.  (PTHREAD_PRIO_PROTECT support will be added later on too, no\nadditional kernel changes are needed for that).  [NOTE: The glibc patch is\nobviously inofficial and unsupported without matching upstream kernel\nfunctionality.]\n\nthe patch-queue and the glibc patch can also be downloaded from:\n\n  http://redhat.com/~mingo/PI-futex-patches/\n\nMany thanks go to the people who helped us create this kernel feature: Steven\nRostedt, Esben Nielsen, Benedikt Spranger, Daniel Walker, John Cooper, Arjan\nvan de Ven, Oleg Nesterov and others.  Credits for related prior projects goes\nto Dirk Grambow, Inaky Perez-Gonzalez, Bill Huey and many others.\n\nClean up the futex code, before adding more features to it:\n\n - use u32 as the futex field type - that\u0027s the ABI\n - use __user and pointers to u32 instead of unsigned long\n - code style / comment style cleanups\n - rename hash-bucket name from \u0027bh\u0027 to \u0027hb\u0027.\n\nI checked the pre and post futex.o object files to make sure this\npatch has no code effects.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nCc: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nCc: Jakub Jelinek \u003cjakub@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "9216dfad4fc97ab639ef0885efc713f3d7a20d5b",
      "tree": "546e301f3181f56133509327f9c5ed035dd4b50d",
      "parents": [
        "1b2db9fb7adc4d67d9ce7d16ce79c41ee84730fe"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:57 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:53 2006 -0700"
      },
      "message": "[PATCH] move_pages: fix 32 -\u003e 64 bit compat function\n\nThe definition of the third parameter is a pointer to an array of virtual\naddresses which give us some trouble.  The existing code calculated the\nwrong address in the array since I used void to avoid having to specify a\ntype.\n\nI now use the correct type \"compat_uptr_t __user *\" in the definition of\nthe function in kernel/compat.c.\n\nHowever, I used __u32 in syscalls.h.  Would have to include compat.h there\nin order to provide the same definition which would generate an ugly\ninclude situation.\n\nOn both ia64 and x86_64 compat_uptr_t is u32. So this works although\nparameter declarations differ.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1b2db9fb7adc4d67d9ce7d16ce79c41ee84730fe",
      "tree": "d3fc0962ada099d741717d36a3f658c15b20c65a",
      "parents": [
        "b63d64a324056cf3c2f7a1a1fe8134100edbb058"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:56 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:53 2006 -0700"
      },
      "message": "[PATCH] sys_move_pages: 32bit support (i386, x86_64)\n\nsys_move_pages() support for 32bit (i386 plus x86_64 compat layer)\n\nAdd support for move_pages() on i386 and also add the compat functions\nnecessary to run 32 bit binaries on x86_64.\n\nAdd compat_sys_move_pages to the x86_64 32bit binary layer.  Note that it is\nnot up to date so I added the missing pieces.  Not sure if this is done the\nright way.\n\n[akpm@osdl.org: compile fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "742755a1d8ce2b548428f7aacf1758b4bba50080",
      "tree": "53426657e14dc19a694d418274c9a6f4dcb8a997",
      "parents": [
        "95a402c3847cc16f4ba03013cd01404fa0f14c2e"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:55 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:53 2006 -0700"
      },
      "message": "[PATCH] page migration: sys_move_pages(): support moving of individual pages\n\nmove_pages() is used to move individual pages of a process. The function can\nbe used to determine the location of pages and to move them onto the desired\nnode. move_pages() returns status information for each page.\n\nlong move_pages(pid, number_of_pages_to_move,\n\t\taddresses_of_pages[],\n\t\tnodes[] or NULL,\n\t\tstatus[],\n\t\tflags);\n\nThe addresses of pages is an array of void * pointing to the\npages to be moved.\n\nThe nodes array contains the node numbers that the pages should be moved\nto. If a NULL is passed instead of an array then no pages are moved but\nthe status array is updated. The status request may be used to determine\nthe page state before issuing another move_pages() to move pages.\n\nThe status array will contain the state of all individual page migration\nattempts when the function terminates. The status array is only valid if\nmove_pages() completed successfullly.\n\nPossible page states in status[]:\n\n0..MAX_NUMNODES\tThe page is now on the indicated node.\n\n-ENOENT\t\tPage is not present\n\n-EACCES\t\tPage is mapped by multiple processes and can only\n\t\tbe moved if MPOL_MF_MOVE_ALL is specified.\n\n-EPERM\t\tThe page has been mlocked by a process/driver and\n\t\tcannot be moved.\n\n-EBUSY\t\tPage is busy and cannot be moved. Try again later.\n\n-EFAULT\t\tInvalid address (no VMA or zero page).\n\n-ENOMEM\t\tUnable to allocate memory on target node.\n\n-EIO\t\tUnable to write back page. The page must be written\n\t\tback in order to move it since the page is dirty and the\n\t\tfilesystem does not provide a migration function that\n\t\twould allow the moving of dirty pages.\n\n-EINVAL\t\tA dirty page cannot be moved. The filesystem does not provide\n\t\ta migration function and has no ability to write back pages.\n\nThe flags parameter indicates what types of pages to move:\n\nMPOL_MF_MOVE\tMove pages that are only mapped by the process.\n\nMPOL_MF_MOVE_ALL Also move pages that are mapped by multiple processes.\n\t\tRequires sufficient capabilities.\n\nPossible return codes from move_pages()\n\n-ENOENT\t\tNo pages found that would require moving. All pages\n\t\tare either already on the target node, not present, had an\n\t\tinvalid address or could not be moved because they were\n\t\tmapped by multiple processes.\n\n-EINVAL\t\tFlags other than MPOL_MF_MOVE(_ALL) specified or an attempt\n\t\tto migrate pages in a kernel thread.\n\n-EPERM\t\tMPOL_MF_MOVE_ALL specified without sufficient priviledges.\n\t\tor an attempt to move a process belonging to another user.\n\n-EACCES\t\tOne of the target nodes is not allowed by the current cpuset.\n\n-ENODEV\t\tOne of the target nodes is not online.\n\n-ESRCH\t\tProcess does not exist.\n\n-E2BIG\t\tToo many pages to move.\n\n-ENOMEM\t\tNot enough memory to allocate control array.\n\n-EFAULT\t\tParameters could not be accessed.\n\nA test program for move_pages() may be found with the patches\non ftp.kernel.org:/pub/linux/kernel/people/christoph/pmig/patches-2.6.17-rc4-mm3\n\nFrom: Christoph Lameter \u003cclameter@sgi.com\u003e\n\n  Detailed results for sys_move_pages()\n\n  Pass a pointer to an integer to get_new_page() that may be used to\n  indicate where the completion status of a migration operation should be\n  placed.  This allows sys_move_pags() to report back exactly what happened to\n  each page.\n\n  Wish there would be a better way to do this. Looks a bit hacky.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Jes Sorensen \u003cjes@trained-monkey.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Michael Kerrisk \u003cmtk-manpages@gmx.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "66643de455c27973ac31ad6de9f859d399916842",
      "tree": "7ebed7f051879007d4b11d6aaa9e65a1bcb0b08f",
      "parents": [
        "2c23d62abb820e19c54012520f08a198c2233a85",
        "387e2b0439026aa738a9edca15a57e5c0bcb4dfc"
      ],
      "author": {
        "name": "David Woodhouse",
        "email": "dwmw2@infradead.org",
        "time": "Wed May 24 09:22:21 2006 +0100"
      },
      "committer": {
        "name": "David Woodhouse",
        "email": "dwmw2@infradead.org",
        "time": "Wed May 24 09:22:21 2006 +0100"
      },
      "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6\n\nConflicts:\n\n\tinclude/asm-powerpc/unistd.h\n\tinclude/asm-sparc/unistd.h\n\tinclude/asm-sparc64/unistd.h\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\n"
    },
    {
      "commit": "0f0410823792ae0ecb45f2578598b115835ffdbb",
      "tree": "b20f362f34757b8d612d8f1c2740fca5f329d93e",
      "parents": [
        "b471f55427ee94d6de2b33b88a7409f8cbc6b5dc"
      ],
      "author": {
        "name": "David Woodhouse",
        "email": "dwmw2@infradead.org",
        "time": "Tue May 23 07:46:40 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue May 23 10:35:32 2006 -0700"
      },
      "message": "[PATCH] powerpc: wire up sys_[gs]et_robust_list\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nAcked-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "d6754b401a15eaa16492ea5dbaa4826361d3f411",
      "tree": "032f067d3af458527d903a7653885404ed82431e",
      "parents": [
        "acc429a517bd11fdcac9bea97d082d26231beb92",
        "693f7d362055261882659475d2ef022e32edbff1"
      ],
      "author": {
        "name": "David Woodhouse",
        "email": "dwmw2@shinybook.infradead.org",
        "time": "Sat Apr 29 01:42:26 2006 +0100"
      },
      "committer": {
        "name": "David Woodhouse",
        "email": "dwmw2@infradead.org",
        "time": "Sat Apr 29 01:42:26 2006 +0100"
      },
      "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6\n"
    },
    {
      "commit": "62c4f0a2d5a188f73a94f2cb8ea0dba3e7cf0a7f",
      "tree": "e85ca2d0dd43f90dccf758338764c3caa55f333f",
      "parents": [
        "089f26d5e31b7bf42a9a8fefec08b30cd27f4b0e"
      ],
      "author": {
        "name": "David Woodhouse",
        "email": "dwmw2@infradead.org",
        "time": "Wed Apr 26 12:56:16 2006 +0100"
      },
      "committer": {
        "name": "David Woodhouse",
        "email": "dwmw2@infradead.org",
        "time": "Wed Apr 26 12:56:16 2006 +0100"
      },
      "message": "Don\u0027t include linux/config.h from anywhere else in include/\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\n"
    },
    {
      "commit": "912d35f86781e64d73be1ef358f703c08905ac37",
      "tree": "5863ad70f5cdccba0c1cd28f83d173deaf71fb83",
      "parents": [
        "016b661e2f717168e600f3c85f29e1a49f88e004"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "axboe@suse.de",
        "time": "Wed Apr 26 10:59:21 2006 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "axboe@suse.de",
        "time": "Wed Apr 26 10:59:21 2006 +0200"
      },
      "message": "[PATCH] Add support for the sys_vmsplice syscall\n\nsys_splice() moves data to/from pipes with a file input/output. sys_vmsplice()\nmoves data to a pipe, with the input being a user address range instead.\n\nThis uses an approach suggested by Linus, where we can hold partial ranges\ninside the pages[] map. Hopefully this will be useful for network\nreceive support as well.\n\nSigned-off-by: Jens Axboe \u003caxboe@suse.de\u003e\n"
    },
    {
      "commit": "70524490ee2ea1bbf6cee6c106597b3ac25a3fc2",
      "tree": "c61dd500035bc3e0dea364777de1b7a58b41a75c",
      "parents": [
        "cbb7e577e732f576b9f399bc2600bdc0626c68dc"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "axboe@suse.de",
        "time": "Tue Apr 11 15:51:17 2006 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "axboe@suse.de",
        "time": "Tue Apr 11 15:51:17 2006 +0200"
      },
      "message": "[PATCH] splice: add support for sys_tee()\n\nBasically an in-kernel implementation of tee, which uses splice and the\npipe buffers as an intelligent way to pass data around by reference.\n\nWhere the user space tee consumes the input and produces a stdout and\nfile output, this syscall merely duplicates the data inside a pipe to\nanother pipe. No data is copied, the output just grabs a reference to the\ninput pipe data.\n\nSigned-off-by: Jens Axboe \u003caxboe@suse.de\u003e\n"
    },
    {
      "commit": "88dd9c16cecbd105bbe7711b6120333f6f7b5474",
      "tree": "9632e5988abeaa7e4d20350305edc4e4652b56d1",
      "parents": [
        "6dde432553551ae036aae12c2b940677d36c9a5b",
        "d1195c516a9acd767cb541f914be2c6ddcafcfc1"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Apr 11 06:34:02 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Apr 11 06:34:02 2006 -0700"
      },
      "message": "Merge branch \u0027splice\u0027 of git://brick.kernel.dk/data/git/linux-2.6-block\n\n* \u0027splice\u0027 of git://brick.kernel.dk/data/git/linux-2.6-block:\n  [PATCH] vfs: add splice_write and splice_read to documentation\n  [PATCH] Remove sys_ prefix of new syscalls from __NR_sys_*\n  [PATCH] splice: warning fix\n  [PATCH] another round of fs/pipe.c cleanups\n  [PATCH] splice: comment styles\n  [PATCH] splice: add Ingo as addition copyright holder\n  [PATCH] splice: unlikely() optimizations\n  [PATCH] splice: speedups and optimizations\n  [PATCH] pipe.c/fifo.c code cleanups\n  [PATCH] get rid of the PIPE_*() macros\n  [PATCH] splice: speedup __generic_file_splice_read\n  [PATCH] splice: add direct fd \u003c-\u003e fd splicing support\n  [PATCH] splice: add optional input and output offsets\n  [PATCH] introduce a \"kernel-internal pipe object\" abstraction\n  [PATCH] splice: be smarter about calling do_page_cache_readahead()\n  [PATCH] splice: optimize the splice buffer mapping\n  [PATCH] splice: cleanup __generic_file_splice_read()\n  [PATCH] splice: only call wake_up_interruptible() when we really have to\n  [PATCH] splice: potential !page dereference\n  [PATCH] splice: mark the io page as accessed\n"
    },
    {
      "commit": "5246d0503130fa58904c8beb987fcf93b96d8ab6",
      "tree": "c807f1bba6a1d5abf0b3a9f221bc3e49ca5810c8",
      "parents": [
        "8833d328caf009f8da58337e17a2cf5d52993a7c"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@osdl.org",
        "time": "Mon Apr 10 22:53:57 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Apr 11 06:18:40 2006 -0700"
      },
      "message": "[PATCH] sync_file_range(): use unsigned for flags\n\nUlrich suggested that the `flags\u0027 arg to sync_file_range() become unsigned.\n\nCc: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "529565dcb1581c9a1e3f6df1c1763ca3e0f0d512",
      "tree": "e8069cc17f887ad86f8dee0d96640a2f19bf4112",
      "parents": [
        "3a326a2ce88e71d00ac0d133e314a3342a7709f8"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Mon Apr 10 15:18:58 2006 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "axboe@suse.de",
        "time": "Mon Apr 10 15:18:58 2006 +0200"
      },
      "message": "[PATCH] splice: add optional input and output offsets\n\nadd optional input and output offsets to sys_splice(), for seekable file\ndescriptors:\n\n asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,\n                            int fd_out, loff_t __user *off_out,\n                            size_t len, unsigned int flags);\n\nsemantics are straightforward: f_pos will be updated with the offset\nprovided by user-space, before the splice transfer is about to begin.\nProviding a NULL offset pointer means the existing f_pos will be used\n(and updated in situ).  Providing an offset for a pipe results in\n-ESPIPE. Providing an invalid offset pointer results in -EFAULT.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Jens Axboe \u003caxboe@suse.de\u003e\n"
    },
    {
      "commit": "f79e2abb9bd452d97295f34376dedbec9686b986",
      "tree": "56b9998caa11983556e842fb9a8143d86d765fa3",
      "parents": [
        "d6dfd1310d3562698fd7c3c086f6c239f96394ac"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@osdl.org",
        "time": "Fri Mar 31 02:30:42 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Mar 31 12:18:54 2006 -0800"
      },
      "message": "[PATCH] sys_sync_file_range()\n\nRemove the recently-added LINUX_FADV_ASYNC_WRITE and LINUX_FADV_WRITE_WAIT\nfadvise() additions, do it in a new sys_sync_file_range() syscall instead.\nReasons:\n\n- It\u0027s more flexible.  Things which would require two or three syscalls with\n  fadvise() can be done in a single syscall.\n\n- Using fadvise() in this manner is something not covered by POSIX.\n\nThe patch wires up the syscall for x86.\n\nThe sycall is implemented in the new fs/sync.c.  The intention is that we can\nmove sys_fsync(), sys_fdatasync() and perhaps sys_sync() into there later.\n\nDocumentation for the syscall is in fs/sync.c.\n\nA test app (sync_file_range.c) is in\nhttp://www.zip.com.au/~akpm/linux/patches/stuff/ext3-tools.tar.gz.\n\nThe available-to-GPL-modules do_sync_file_range() is for knfsd: \"A COMMIT can\nsay NFS_DATA_SYNC or NFS_FILE_SYNC.  I can skip the -\u003efsync call for\nNFS_DATA_SYNC which is hopefully the more common.\"\n\nNote: the `async\u0027 writeout mode SYNC_FILE_RANGE_WRITE will turn synchronous if\nthe queue is congested.  This is trivial to fix: add a new flag bit, set\nwbc-\u003enonblocking.  But I\u0027m not sure that we want to expose implementation\ndetails down to that level.\n\nNote: it\u0027s notable that we can sync an fd which wasn\u0027t opened for writing.\nSame with fsync() and fdatasync()).\n\nNote: the code takes some care to handle attempts to sync file contents\noutside the 16TB offset on 32-bit machines.  It makes such attempts appear to\nsucceed, for best 32-bit/64-bit compatibility.  Perhaps it should make such\nrequests fail...\n\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Michael Kerrisk \u003cmtk-manpages@gmx.net\u003e\nCc: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nCc: Neil Brown \u003cneilb@cse.unsw.edu.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "5274f052e7b3dbd81935772eb551dfd0325dfa9d",
      "tree": "c79f813ec513660edb6f1e4a75cb366c6b84f53f",
      "parents": [
        "5d4fe2c1ce83c3e967ccc1ba3d580c1a5603a866"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "axboe@suse.de",
        "time": "Thu Mar 30 15:15:30 2006 +0200"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Thu Mar 30 12:28:18 2006 -0800"
      },
      "message": "[PATCH] Introduce sys_splice() system call\n\nThis adds support for the sys_splice system call. Using a pipe as a\ntransport, it can connect to files or sockets (latter as output only).\n\nFrom the splice.c comments:\n\n   \"splice\": joining two ropes together by interweaving their strands.\n\n   This is the \"extended pipe\" functionality, where a pipe is used as\n   an arbitrary in-memory buffer. Think of a pipe as a small kernel\n   buffer that you can use to transfer data from one end to the other.\n\n   The traditional unix read/write is extended with a \"splice()\" operation\n   that transfers data buffers to or from a pipe buffer.\n\n   Named by Larry McVoy, original implementation from Linus, extended by\n   Jens to support splicing to files and fixing the initial implementation\n   bugs.\n\nSigned-off-by: Jens Axboe \u003caxboe@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "6961ec8267d08e21011457b05d2263ec06bdcfe1",
      "tree": "13accf5a4e93922abb66036f97a51a2ea76f1f6e",
      "parents": [
        "a72011567812cbd93788cc5facda160a3cba5905"
      ],
      "author": {
        "name": "Arnd Bergmann",
        "email": "abergman@de.ibm.com",
        "time": "Fri Mar 24 03:15:08 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Mar 24 07:33:15 2006 -0800"
      },
      "message": "[PATCH] add sys_unshare to syscalls.h\n\nAll architecture independent system calls should be declared\nin syscalls.h, add the one that is missing.\n\nSigned-off-by: Arnd Bergmann \u003carnd.bergmann@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "c04030e16dbea2f7581f82cc6688695927f6ac5b",
      "tree": "7ff5cd2494a133f1bf571f7af02e656bb01d124f",
      "parents": [
        "ee713059d4922e4ee17700496d9eb3b95b1ab836"
      ],
      "author": {
        "name": "Ulrich Drepper",
        "email": "drepper@redhat.com",
        "time": "Fri Feb 24 13:04:21 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Feb 24 14:31:39 2006 -0800"
      },
      "message": "[PATCH] flags parameter for linkat\n\nI\u0027m currently at the POSIX meeting and one thing covered was the\nincompatibility of Linux\u0027s link() with the POSIX definition.  The name.\nLinux does not follow symlinks, POSIX requires it does.\n\nEven if somebody thinks this is a good default behavior we cannot change this\nbecause it would break the ABI.  But the fact remains that some application\nmight want this behavior.\n\nWe have one chance to help implementing this without breaking the behavior.\n For this we could use the new linkat interface which would need a new\nflags parameter.  If the new parameter is AT_SYMLINK_FOLLOW the new\nbehavior could be invoked.\n\nI do not want to introduce such a patch now.  But we could add the\nparameter now, just don\u0027t use it.  The patch below would do this.  Can we\nget this late patch applied before the release more or less fixes the\nsyscall API?\n\nSigned-off-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nSigned-off-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "cff2b760096d1e6feaa31948e7af4abbefe47822",
      "tree": "9bd6d2796ffb8c6611ca06b74c6349f8f1289ce2",
      "parents": [
        "25bf368b3d98668c5d5f38e2201d8bca16e52680"
      ],
      "author": {
        "name": "Ulrich Drepper",
        "email": "drepper@redhat.com",
        "time": "Sat Feb 11 17:55:47 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sat Feb 11 21:41:10 2006 -0800"
      },
      "message": "[PATCH] fstatat64 support\n\nThe *at patches introduced fstatat and, due to inusfficient research, I\nused the newfstat functions generally as the guideline.  The result is that\non 32-bit platforms we don\u0027t have all the information needed to implement\nfstatat64.\n\nThis patch modifies the code to pass up 64-bit information if\n__ARCH_WANT_STAT64 is defined.  I renamed the syscall entry point to make\nthis clear.  Other archs will continue to use the existing code.  On x86-64\nthe compat code is implemented using a new sys32_ function.  this is what\nis done for the other stat syscalls as well.\n\nThis patch might break some other archs (those which define\n__ARCH_WANT_STAT64 and which already wired up the syscall).  Yet others\nmight need changes to accomodate the compatibility mode.  I really don\u0027t\nwant to do that work because all this stat handling is a mess (more so in\nglibc, but the kernel is also affected).  It should be done by the arch\nmaintainers.  I\u0027ll provide some stand-alone test shortly.  Those who are\neager could compile glibc and run \u0027make check\u0027 (no installation needed).\n\nThe patch below has been tested on x86 and x86-64.\n\nSigned-off-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "9ad11ab48b1ad618bf47076e9e579f267f5306c2",
      "tree": "b0b06f4455d9796fc5003add2067f2dbc225fc53",
      "parents": [
        "8aeba3c62a64e0f6527d1a0388b1a6a7060158ba"
      ],
      "author": {
        "name": "Stephen Rothwell",
        "email": "sfr@canb.auug.org.au",
        "time": "Thu Feb 02 16:11:51 2006 +1100"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Feb 01 22:04:33 2006 -0800"
      },
      "message": "[PATCH] compat: fix compat_sys_openat and friends\n\nMost of the 64 bit architectures will zero extend the first argument to\ncompat_sys_{openat,newfstatat,futimesat} which will fail if the 32 bit\nsyscall was passed AT_FDCWD (which is a small negative number).  Declare\nthe first argument to be an unsigned int which will force the correct\nsign extension when the internal functions are called in each case.\n\nAlso, do some small white space cleanups in fs/compat.c.\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "3a2ca64496cc1c9aeab1076e06d092b3ec74a43d",
      "tree": "e76fdb42c39184405bbe5c9dafdb04e9012c38c0",
      "parents": [
        "577bca9eff94193a06e426f8dbf6b3152247a209"
      ],
      "author": {
        "name": "Ulrich Drepper",
        "email": "drepper@redhat.com",
        "time": "Wed Feb 01 03:04:33 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Feb 01 08:53:09 2006 -0800"
      },
      "message": "[PATCH] prototypes for *at functions \u0026 typo fix\n\nHere\u0027s the follow-up patch which introduces the prototypes for the new\nsyscalls.  There was also a typo in one of the new symbols.\n\nSigned-off-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "5131cf154ad1c6e584efa58d17a469d0b80f49bd",
      "tree": "d9134f74d0b04c571407fd5fbf494f1714523211",
      "parents": [
        "c21761f168894b356626c847fe13be39605d76b4"
      ],
      "author": {
        "name": "Arnd Bergmann",
        "email": "arnd@arndb.de",
        "time": "Wed Jan 18 17:43:04 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Jan 18 19:20:22 2006 -0800"
      },
      "message": "[PATCH] add missing syscall declarations\n\nAll standard system calls should be declared in include/linux/syscalls.h.\n\nAdd some of the new additions that were previously missed.\n\nSigned-off-by: Arnd Bergmann \u003carndb@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "6150c32589d1976ca8a5c987df951088c05a7542",
      "tree": "94073696576323ff966e365d8c47b8ecd8372f97",
      "parents": [
        "44637a12f80b80157d9c1bc5b7d6ef09c9e05713",
        "be42d5fa3772241b8ecebd443f1fb36247959c54"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Jan 09 10:03:44 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Jan 09 10:03:44 2006 -0800"
      },
      "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge\n"
    },
    {
      "commit": "39743889aaf76725152f16aa90ca3c45f6d52da3",
      "tree": "2a6f658d03dbbd9428934c5e030230a4acb6d5e0",
      "parents": [
        "dc9aa5b9d65fd11b1f5246b46ec610ee8b83c6dd"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Sun Jan 08 01:00:51 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Jan 08 20:12:42 2006 -0800"
      },
      "message": "[PATCH] Swap Migration V5: sys_migrate_pages interface\n\nsys_migrate_pages implementation using swap based page migration\n\nThis is the original API proposed by Ray Bryant in his posts during the first\nhalf of 2005 on linux-mm@kvack.org and linux-kernel@vger.kernel.org.\n\nThe intent of sys_migrate is to migrate memory of a process.  A process may\nhave migrated to another node.  Memory was allocated optimally for the prior\ncontext.  sys_migrate_pages allows to shift the memory to the new node.\n\nsys_migrate_pages is also useful if the processes available memory nodes have\nchanged through cpuset operations to manually move the processes memory.  Paul\nJackson is working on an automated mechanism that will allow an automatic\nmigration if the cpuset of a process is changed.  However, a user may decide\nto manually control the migration.\n\nThis implementation is put into the policy layer since it uses concepts and\nfunctions that are also needed for mbind and friends.  The patch also provides\na do_migrate_pages function that may be useful for cpusets to automatically\nmove memory.  sys_migrate_pages does not modify policies in contrast to Ray\u0027s\nimplementation.\n\nThe current code here is based on the swap based page migration capability and\nthus is not able to preserve the physical layout relative to it containing\nnodeset (which may be a cpuset).  When direct page migration becomes available\nthen the implementation needs to be changed to do a isomorphic move of pages\nbetween different nodesets.  The current implementation simply evicts all\npages in source nodeset that are not in the target nodeset.\n\nPatch supports ia64, i386 and x86_64.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "67207b9664a8d603138ef1556141e6d0a102bea7",
      "tree": "e98886778be65aeb6625a5f516873bbc5beeb978",
      "parents": [
        "d7a301033f1990188f65abf4fe8e5b90ef0e3888"
      ],
      "author": {
        "name": "Arnd Bergmann",
        "email": "arnd@arndb.de",
        "time": "Tue Nov 15 15:53:48 2005 -0500"
      },
      "committer": {
        "name": "Paul Mackerras",
        "email": "paulus@samba.org",
        "time": "Mon Jan 09 14:49:12 2006 +1100"
      },
      "message": "[PATCH] spufs: The SPU file system, base\n\nThis is the current version of the spu file system, used\nfor driving SPEs on the Cell Broadband Engine.\n\nThis release is almost identical to the version for the\n2.6.14 kernel posted earlier, which is available as part\nof the Cell BE Linux distribution from\nhttp://www.bsc.es/projects/deepcomputing/linuxoncell/.\n\nThe first patch provides all the interfaces for running\nspu application, but does not have any support for\ndebugging SPU tasks or for scheduling. Both these\nfunctionalities are added in the subsequent patches.\n\nSee Documentation/filesystems/spufs.txt on how to use\nspufs.\n\nSigned-off-by: Arnd Bergmann \u003carndb@de.ibm.com\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n"
    },
    {
      "commit": "dfb7dac3af623a68262536437af008ed6aba4d88",
      "tree": "fdc8a61c73257dcf8866cf7b9213ce78d2422e7f",
      "parents": [
        "7024a9b884ed7657fb873e655cd124d85ae792a4"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Sun Oct 30 15:02:22 2005 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Oct 30 17:37:20 2005 -0800"
      },
      "message": "[PATCH] unify sys_ptrace prototype\n\nMake sure we always return, as all syscalls should.  Also move the common\nprototype to \u003clinux/syscalls.h\u003e\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "7980cbbb30bf044e6f40912a3f6456204ddfc27e",
      "tree": "8bd1ccb91431f1c81ab5980a5cc8474f1d490136",
      "parents": [
        "4b1ac9ab15c1fc1e0b73d887a0c0cafe92991f97"
      ],
      "author": {
        "name": "Eric Dumazet",
        "email": "dada1@cosmosbay.com",
        "time": "Wed Sep 21 09:55:43 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Sep 21 10:12:18 2005 -0700"
      },
      "message": "[PATCH] Adds sys_set_mempolicy() in include/linux/syscalls.h\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "cf36680887d6d942d2119c1ff1dfb2428b0f21f4",
      "tree": "1290244377993179daabe5f2e0f3f636fbafbc47",
      "parents": [
        "8dc4fd87f229414fc38648508aad7def2275fe81"
      ],
      "author": {
        "name": "Anton Blanchard",
        "email": "anton@samba.org",
        "time": "Thu Jul 07 17:56:13 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Thu Jul 07 18:23:37 2005 -0700"
      },
      "message": "[PATCH] move ioprio syscalls into syscalls.h\n\n- Make ioprio syscalls return long, like set/getpriority syscalls.\n- Move function prototypes into syscalls.h so we can pick them up in the\n  32/64bit compat code.\n\nSigned-off-by: Anton Blanchard \u003canton@samba.org\u003e\nAcked-by: Jens Axboe \u003caxboe@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "72414d3f1d22fc3e311b162fca95c430048d38ce",
      "tree": "46850947c1602357dd3c51d8d6ebaa5805507f9f",
      "parents": [
        "4f339ecb30c759f94a29992d4635d9194132b6cf"
      ],
      "author": {
        "name": "Maneesh Soni",
        "email": "maneesh@in.ibm.com",
        "time": "Sat Jun 25 14:58:28 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Jun 25 16:24:55 2005 -0700"
      },
      "message": "[PATCH] kexec code cleanup\n\no Following patch provides purely cosmetic changes and corrects CodingStyle\n  guide lines related certain issues like below in kexec related files\n\n  o braces for one line \"if\" statements, \"for\" loops,\n  o more than 80 column wide lines,\n  o No space after \"while\", \"for\" and \"switch\" key words\n\no Changes:\n  o take-2: Removed the extra tab before \"case\" key words.\n  o take-3: Put operator at the end of line and space before \"*/\"\n\nSigned-off-by: Maneesh Soni \u003cmaneesh@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "dc009d92435f99498cbc579ce76bf28e837e2c14",
      "tree": "2ba8732b28225593d996b8faa079dc6ab4bbc9bc",
      "parents": [
        "d0537508a9921efced238b20967e50e519ac34af"
      ],
      "author": {
        "name": "Eric W. Biederman",
        "email": "ebiederm@xmission.com",
        "time": "Sat Jun 25 14:57:52 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Jun 25 16:24:48 2005 -0700"
      },
      "message": "[PATCH] kexec: add kexec syscalls\n\nThis patch introduces the architecture independent implementation the\nsys_kexec_load, the compat_sys_kexec_load system calls.\n\nKexec on panic support has been integrated into the core patch and is\nrelatively clean.\n\nIn addition the hopefully architecture independent option\ncrashkernel\u003dsize@location has been docuemented.  It\u0027s purpose is to reserve\nspace for the panic kernel to live, and where no DMA transfer will ever be\nsetup to access.\n\nSigned-off-by: Eric Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Alexander Nyberg \u003calexn@telia.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Vivek Goyal \u003cvgoyal@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "7d87e14c236d6c4cab66d87cf0bc1e0f0375d308",
      "tree": "0c0826cdc102286b541e3e56b59c81752d34c90d",
      "parents": [
        "434498d5323445b59167fd7aa5633b74ebbce901"
      ],
      "author": {
        "name": "Stephen Rothwell",
        "email": "sfr@canb.auug.org.au",
        "time": "Sun May 01 08:59:12 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sun May 01 08:59:12 2005 -0700"
      },
      "message": "[PATCH] consolidate sys_shmat\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
      "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d",
      "parents": [],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Apr 16 15:20:36 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Apr 16 15:20:36 2005 -0700"
      },
      "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n"
    }
  ]
}