)]}'
{
  "commit": "03668b3ceb0c7a95e09f1b6169f5270ffc1a19f6",
  "tree": "755ea207b968af12e195f6fb3e3b52b4d68e8630",
  "parents": [
    "ad915c432eccb482427c1bbd77c74e6f7bfe60b3"
  ],
  "author": {
    "name": "David Rientjes",
    "email": "rientjes@google.com",
    "time": "Mon Aug 09 17:18:54 2010 -0700"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@linux-foundation.org",
    "time": "Mon Aug 09 20:44:56 2010 -0700"
  },
  "message": "oom: avoid oom killer for lowmem allocations\n\nIf memory has been depleted in lowmem zones even with the protection\nafforded to it by /proc/sys/vm/lowmem_reserve_ratio, it is unlikely that\nkilling current users will help.  The memory is either reclaimable (or\nmigratable) already, in which case we should not invoke the oom killer at\nall, or it is pinned by an application for I/O.  Killing such an\napplication may leave the hardware in an unspecified state and there is no\nguarantee that it will be able to make a timely exit.\n\nLowmem allocations are now failed in oom conditions when __GFP_NOFAIL is\nnot used so that the task can perhaps recover or try again later.\n\nPreviously, the heuristic provided some protection for those tasks with\nCAP_SYS_RAWIO, but this is no longer necessary since we will not be\nkilling tasks for the purposes of ISA allocations.\n\nhigh_zoneidx is gfp_zone(gfp_flags), meaning that ZONE_NORMAL will be the\ndefault for all allocations that are not __GFP_DMA, __GFP_DMA32,\n__GFP_HIGHMEM, and __GFP_MOVABLE on kernels configured to support those\nflags.  Testing for high_zoneidx being less than ZONE_NORMAL will only\nreturn true for allocations that have either __GFP_DMA or __GFP_DMA32.\n\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.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": "9bd339eb04c6c84691232bc7e499947fe9d13942",
      "old_mode": 33188,
      "old_path": "mm/page_alloc.c",
      "new_id": "527f73e4c63fcbc130d751d180e612d0c0b32b72",
      "new_mode": 33188,
      "new_path": "mm/page_alloc.c"
    }
  ]
}