)]}'
{
  "commit": "f2b20d436534f22ccc3f5ad172499fcb013bb315",
  "tree": "5c5df70a252ea14da6063d2c6c3de4a4e769ecae",
  "parents": [
    "609f6ea1c9cdfe0c43a927e13205a57d0c266d5a"
  ],
  "author": {
    "name": "Dan Williams",
    "email": "dan.j.williams@intel.com",
    "time": "Thu Dec 29 09:16:28 2011 +0100"
  },
  "committer": {
    "name": "Jens Axboe",
    "email": "axboe@kernel.dk",
    "time": "Thu Dec 29 09:16:28 2011 +0100"
  },
  "message": "block: fix blk_queue_end_tag()\n\nCommit 5e081591 \"block: warn if tag is greater than real_max_depth\"\ncleaned up blk_queue_end_tag() to warn when the tag is truly invalid\n(greater than real_max_depth).  However, it changed behavior in the tag \u003c\nmax_depth case to not end the request.  Leading to triggering of\nBUG_ON(blk_queued_rq(rq)) in the request completion path:\n\n  http://marc.info/?l\u003dlinux-kernel\u0026m\u003d132204370518629\u0026w\u003d2\n\nIn order to allow blk_queue_resize_tags() to shrink the tag space\nblk_queue_end_tag() must always complete tags with a value less than\nreal_max_depth regardless of the current max_depth.  The comment about\n\"handling the shrink case\" seems to be what prompted changes in this\nspace, so remove it and BUG on all invalid tags (made even simpler by\nMatthew\u0027s suggestion to use an unsigned compare).\n\nSigned-off-by: Dan Williams \u003cdan.j.williams@intel.com\u003e\nCc: Tao Ma \u003cboyu.mt@taobao.com\u003e\nCc: Matthew Wilcox \u003cmatthew@wil.cx\u003e\nReported-by: Meelis Roos \u003cmroos@ut.ee\u003e\nReported-by: Ed Nadolski \u003cedmund.nadolski@intel.com\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "e74d6d13838f3ae9f717911a38d21885623029c7",
      "old_mode": 33188,
      "old_path": "block/blk-tag.c",
      "new_id": "4af6f5cc1167a65494dc52b39cd3f1dfd1271087",
      "new_mode": 33188,
      "new_path": "block/blk-tag.c"
    }
  ]
}