)]}'
{
  "commit": "dfe195fb79e88c334481f1362fef52f6d2e30b2d",
  "tree": "4e7c30eabca8e5d8f30f8bf3d45e046281677ac4",
  "parents": [
    "bf1db69fbf4ff511e88736ce2e6318846f34492b"
  ],
  "author": {
    "name": "Benny Halevy",
    "email": "bhalevy@panasas.com",
    "time": "Tue Aug 05 13:01:41 2008 -0700"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@linux-foundation.org",
    "time": "Tue Aug 05 14:33:50 2008 -0700"
  },
  "message": "mm: fix uninitialized variables for find_vma_prepare callers\n\ngcc 4.3.0 correctly emits the following warnings.\nWhen a vma covering addr is found, find_vma_prepare indeed returns without\nsetting pprev, rb_link, and rb_parent.\n\n  mm/mmap.c: In function `insert_vm_struct\u0027:\n  mm/mmap.c:2085: warning: `rb_parent\u0027 may be used uninitialized in this function\n  mm/mmap.c:2085: warning: `rb_link\u0027 may be used uninitialized in this function\n  mm/mmap.c:2084: warning: `prev\u0027 may be used uninitialized in this function\n  mm/mmap.c: In function `copy_vma\u0027:\n  mm/mmap.c:2124: warning: `rb_parent\u0027 may be used uninitialized in this function\n  mm/mmap.c:2124: warning: `rb_link\u0027 may be used uninitialized in this function\n  mm/mmap.c:2123: warning: `prev\u0027 may be used uninitialized in this function\n  mm/mmap.c: In function `do_brk\u0027:\n  mm/mmap.c:1951: warning: `rb_parent\u0027 may be used uninitialized in this function\n  mm/mmap.c:1951: warning: `rb_link\u0027 may be used uninitialized in this function\n  mm/mmap.c:1949: warning: `prev\u0027 may be used uninitialized in this function\n  mm/mmap.c: In function `mmap_region\u0027:\n  mm/mmap.c:1092: warning: `rb_parent\u0027 may be used uninitialized in this function\n  mm/mmap.c:1092: warning: `rb_link\u0027 may be used uninitialized in this function\n  mm/mmap.c:1089: warning: `prev\u0027 may be used uninitialized in this function\n\nHugh adds: in fact, none of find_vma_prepare\u0027s callers use those values\nwhen a vma is found to be already covering addr, it\u0027s either an error or\nan occasion to munmap and repeat.  Okay, let\u0027s quieten the compiler (but I\nwould prefer it if pprev, rb_link and rb_parent were meaningful in that\ncase, rather than whatever\u0027s in them from descending the tree).\n\nSigned-off-by: Benny Halevy \u003cbhalevy@panasas.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: \"Ryan Hope\" \u003crmh3093@gmail.com\u003e\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": "245c3d69067b7bc4c0b83ba2fa6a08df28bc7f9b",
      "old_mode": 33188,
      "old_path": "mm/mmap.c",
      "new_id": "971d0eda754a539d73d669fa8d91bd2459f10715",
      "new_mode": 33188,
      "new_path": "mm/mmap.c"
    }
  ]
}