)]}'
{
  "commit": "6d7779538f765963ced45a3fa4bed7ba8d2c277d",
  "tree": "07d47e6ff1ab30309004e2ba0674dcabd83945c1",
  "parents": [
    "d85f33855c303acfa87fa457157cef755b6087df"
  ],
  "author": {
    "name": "Christoph Lameter",
    "email": "clameter@sgi.com",
    "time": "Sun May 06 14:49:40 2007 -0700"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@woody.linux-foundation.org",
    "time": "Mon May 07 12:12:53 2007 -0700"
  },
  "message": "mm: optimize compound_head() by avoiding a shared page flag\n\nThe patch adds PageTail(page) and PageHead(page) to check if a page is the\nhead or the tail of a compound page.  This is done by masking the two bits\ndescribing the state of a compound page and then comparing them.  So one\ncomparision and a branch instead of two bit checks and two branches.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "8c149fa4491d751bd70997b024d220a5a139f8d4",
      "old_mode": 33188,
      "old_path": "include/linux/mm.h",
      "new_id": "695b90437bbc763bba0bb935793450d102f1dbf7",
      "new_mode": 33188,
      "new_path": "include/linux/mm.h"
    },
    {
      "type": "modify",
      "old_id": "a1e143634946f08128737148f53358550b356ec8",
      "old_mode": 33188,
      "old_path": "include/linux/page-flags.h",
      "new_id": "a3c8b60a9c3a72519ef2356a5bf4b2ecb9000c35",
      "new_mode": 33188,
      "new_path": "include/linux/page-flags.h"
    },
    {
      "type": "modify",
      "old_id": "fc241fe295abf21a9c015b66a21d0e1eb18ea7d8",
      "old_mode": 33188,
      "old_path": "mm/page_alloc.c",
      "new_id": "36d713e216e8d4dd22d42b3c1f72b570ff0965ea",
      "new_mode": 33188,
      "new_path": "mm/page_alloc.c"
    }
  ]
}