)]}'
{
  "log": [
    {
      "commit": "cef0184c115e5e4e10498f6548d9526465e72478",
      "tree": "752c4116e0f93328239db9ff2c2ed730fef3ce0e",
      "parents": [
        "fd1f87d24d492fda464bedf10a5dd5174ff9b065"
      ],
      "author": {
        "name": "KOSAKI Motohiro",
        "email": "kosaki.motohiro@jp.fujitsu.com",
        "time": "Thu May 31 16:26:33 2012 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 31 17:49:31 2012 -0700"
      },
      "message": "mqueue: separate mqueue default value from maximum value\n\nCommit b231cca4381e (\"message queues: increase range limits\") changed\nmqueue default value when attr parameter is specified NULL from hard\ncoded value to fs.mqueue.{msg,msgsize}_max sysctl value.\n\nThis made large side effect.  When user need to use two mqueue\napplications 1) using !NULL attr parameter and it require big message\nsize and 2) using NULL attr parameter and only need small size message,\napp (1) require to raise fs.mqueue.msgsize_max and app (2) consume large\nmemory size even though it doesn\u0027t need.\n\nDoug Ledford propsed to switch back it to static hard coded value.\nHowever it also has a compatibility problem.  Some applications might\nstarted depend on the default value is tunable.\n\nThe solution is to separate default value from maximum value.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Doug Ledford \u003cdledford@redhat.com\u003e\nAcked-by: Doug Ledford \u003cdledford@redhat.com\u003e\nAcked-by: Joe Korty \u003cjoe.korty@ccur.com\u003e\nCc: Amerigo Wang \u003camwang@redhat.com\u003e\nAcked-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nCc: Jiri Slaby \u003cjslaby@suse.cz\u003e\nCc: Manfred Spraul \u003cmanfred@colorfullife.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "93e6f119c0ce8a1bba6e81dc8dd97d67be360844",
      "tree": "6d5131b4134d7aa6ba680a6a55f016bd6e03f319",
      "parents": [
        "29a5c67e7a78815fda0567a867adce467f6e6e5a"
      ],
      "author": {
        "name": "Doug Ledford",
        "email": "dledford@redhat.com",
        "time": "Thu May 31 16:26:28 2012 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 31 17:49:30 2012 -0700"
      },
      "message": "ipc/mqueue: cleanup definition names and locations\n\nSince commit b231cca4381e (\"message queues: increase range limits\") on\nOct 18, 2008, calls to mq_open() that did not pass in an attribute\nstruct and expected to get default values for the size of the queue and\nthe max message size now get the system wide maximums instead of\nhardwired defaults like they used to get.\n\nThis was uncovered when one of the earlier patches in this patch set\nincreased the default system wide maximums at the same time it increased\nthe hard ceiling on the system wide maximums (a customer specifically\nneeded the hard ceiling brought back up, the new ceiling that commit\nb231cca4381e introduced was too low for their production systems).  By\nincreasing the default maximums and not realising they were tied to any\nattempt to create a message queue without an attribute struct, I had\ninadvertently made it such that all message queue creation attempts\nwithout an attribute struct were failing because the new default\nmaximums would create a queue that exceeded the default rlimit for\nmessage queue bytes.\n\nAs a result, the system wide defaults were brought back down to their\nprevious levels, and the system wide ceilings on the maximums were\nraised to meet the customer\u0027s needs.  However, the fact that the no\nattribute struct behavior of mq_open() could be broken by changing the\nsystem wide maximums for message queues was seen as fundamentally broken\nitself.  So we hardwired the no attribute case back like it used to be.\nBut, then we realized that on the very off chance that some piece of\nsoftware in the wild depended on that behavior, we could work around\nthat issue by adding two new knobs to /proc that allowed setting the\ndefaults for message queues created without an attr struct separately\nfrom the system wide maximums.\n\nWhat is not an option IMO is to leave the current behavior in place.  No\npiece of software should ever rely on setting the system wide maximums\nin order to get a desired message queue.  Such a reliance would be so\nfundamentally multitasking OS unfriendly as to not really be tolerable.\nFortunately, we don\u0027t know of any software in the wild that uses this\nexcept for a regression test program that caught the issue in the first\nplace.  If there is though, we have made accommodations with the two new\n/proc knobs (and that\u0027s all the accommodations such fundamentally broken\nsoftware can be allowed)..\n\nThis patch:\n\nThe various defines for minimums and maximums of the sysctl controllable\nmqueue values are scattered amongst different files and named\ninconsistently.  Move them all into ipc_namespace.h and make them have\nconsistent names.  Additionally, make the number of queues per namespace\nalso have a minimum and maximum and use the same sysctl function as the\nother two settable variables.\n\nSigned-off-by: Doug Ledford \u003cdledford@redhat.com\u003e\nAcked-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nCc: Amerigo Wang \u003camwang@redhat.com\u003e\nCc: Joe Korty \u003cjoe.korty@ccur.com\u003e\nCc: Jiri Slaby \u003cjslaby@suse.cz\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Manfred Spraul \u003cmanfred@colorfullife.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2bc4657c15e4a33d9a192579c7627a397dbcbebc",
      "tree": "c226e2e567fa7c13b68aa3de16fb83f731d22aa5",
      "parents": [
        "a153cf9dd038244b7fd9adad3152b85deec5c4af"
      ],
      "author": {
        "name": "Eric W. Biederman",
        "email": "ebiederm@xmission.com",
        "time": "Fri Apr 03 02:51:10 2009 -0700"
      },
      "committer": {
        "name": "Eric W. Biederman",
        "email": "ebiederm@xmission.com",
        "time": "Thu Nov 12 02:04:54 2009 -0800"
      },
      "message": "sysctl ipc: Remove dead binary sysctl support code.\n\nNow that sys_sysctl is a generic wrapper around /proc/sys  .ctl_name\nand .strategy members of sysctl tables are dead code.  Remove them.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n"
    },
    {
      "commit": "8d65af789f3e2cf4cfbdbf71a0f7a61ebcd41d38",
      "tree": "121df3bfffc7853ac6d2c514ad514d4a748a0933",
      "parents": [
        "c0d0787b6d47d9f4d5e8bd321921104e854a9135"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Wed Sep 23 15:57:19 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Sep 24 07:21:04 2009 -0700"
      },
      "message": "sysctl: remove \"struct file *\" argument of -\u003eproc_handler\n\nIt\u0027s unused.\n\nIt isn\u0027t needed -- read or write flag is already passed and sysctl\nshouldn\u0027t care about the rest.\n\nIt _was_ used in two places at arch/frv for some reason.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f26ec5baa67524b00311b8ec4626efc0a95925e1",
      "tree": "9ab4040d918356204db0b0acc44648619c677699",
      "parents": [
        "17a5138d204014b00cb9c1d6e8ff311993041b5c"
      ],
      "author": {
        "name": "Geert Uytterhoeven",
        "email": "Geert.Uytterhoeven@sonycom.com",
        "time": "Mon Apr 13 14:39:48 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 13 15:04:29 2009 -0700"
      },
      "message": "namespaces: move get_mq() inside #ifdef CONFIG_SYSCTL\n\n| ipc/mq_sysctl.c:26: warning: \u0027get_mq\u0027 defined but not used\n\nSigned-off-by: Geert Uytterhoeven \u003cGeert.Uytterhoeven@sonycom.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bdc8e5f85f9abe2e7c78dcf39d81f9a97178788b",
      "tree": "a25a9d10f3686c4cb309d2477376ee585322ef43",
      "parents": [
        "7eafd7c74c3f2e67c27621b987b28397110d643f"
      ],
      "author": {
        "name": "Serge E. Hallyn",
        "email": "serue@us.ibm.com",
        "time": "Mon Apr 06 19:01:11 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:09 2009 -0700"
      },
      "message": "namespaces: mqueue namespace: adapt sysctl\n\nLargely inspired from ipc/ipc_sysctl.c.  This patch isolates the mqueue\nsysctl stuff in its own file.\n\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nSigned-off-by: Nadia Derbey \u003cNadia.Derbey@bull.net\u003e\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    }
  ]
}