)]}'
{
  "commit": "208d54e5513c0c02d85af0990901354c74364d5c",
  "tree": "83922f1d4a83f19bffcbff299044f421bd7e9c73",
  "parents": [
    "c6a57e19e464db118dc4ab9cfe9e9748c6d630a0"
  ],
  "author": {
    "name": "Dave Hansen",
    "email": "haveblue@us.ibm.com",
    "time": "Sat Oct 29 18:16:52 2005 -0700"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@g5.osdl.org",
    "time": "Sat Oct 29 21:40:44 2005 -0700"
  },
  "message": "[PATCH] memory hotplug locking: node_size_lock\n\npgdat-\u003enode_size_lock is basically only neeeded in one place in the normal\ncode: show_mem(), which is the arch-specific sysrq-m printing function.\n\nStrictly speaking, the architectures not doing memory hotplug do no need this\nlocking in show_mem().  However, they are all included for completeness.  This\nshould also make any future consolidation of all of the implementations a\nlittle more straightforward.\n\nThis lock is also held in the sparsemem code during a memory removal, as\nsections are invalidated.  This is the place there pfn_valid() is made false\nfor a memory area that\u0027s being removed.  The lock is only required when doing\npfn_valid() operations on memory which the user does not already have a\nreference on the page, such as in show_mem().\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n",
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