)]}'
{
  "commit": "e8a03feb54ca7f1768bbdc2b491f9ef654e6d01d",
  "tree": "1ce113d18057e0870e0816f272e21b6716ef321f",
  "parents": [
    "9b030e2006546366c832911ca5eb9e785408795b"
  ],
  "author": {
    "name": "Rik van Riel",
    "email": "riel@redhat.com",
    "time": "Wed Apr 14 17:59:28 2010 -0400"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@linux-foundation.org",
    "time": "Mon Apr 19 16:28:20 2010 -0700"
  },
  "message": "rmap: add exclusively owned pages to the newest anon_vma\n\nThe recent anon_vma fixes cause many anonymous pages to end up\nin the parent process anon_vma, even when the page is exclusively\nowned by the current process.\n\nAdding exclusively owned anonymous pages to the top anon_vma\nreduces rmap scanning overhead, especially in workloads with\nforking servers.\n\nThis patch adds a parameter to __page_set_anon_rmap that can\nbe used to indicate whether or not the added page is exclusively\nowned by the current process.\n\nPages added through page_add_new_anon_rmap are exclusively\nowned by the current process, and can be added to the top\nanon_vma.\n\nPages added through page_add_anon_rmap can be either shared\nor exclusively owned, so we do the conservative thing and\nadd it to the oldest anon_vma.\n\nA next step would be to add the exclusive parameter to\npage_add_anon_rmap, to be used from functions where we do\nknow for sure whether a page is exclusively owned.\n\nSigned-off-by: Rik van Riel \u003criel@redhat.com\u003e\nReviewed-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nLightly-tested-by: Borislav Petkov \u003cbp@alien8.de\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\n[ Edited to look nicer  - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "4bad3267537a8c7826d313afa661a03f51b2df26",
      "old_mode": 33188,
      "old_path": "mm/rmap.c",
      "new_id": "526704e8215d0f3124769083bc0f14e2817cab3a",
      "new_mode": 33188,
      "new_path": "mm/rmap.c"
    }
  ]
}