)]}'
{
  "commit": "e67f88dd12f610da98ca838822f2c9b4e7c6100e",
  "tree": "6cf01b794984aaad97b6e6ff6e5103bc48d68191",
  "parents": [
    "dcfd9cdc1222f14d6180514e533289493a0716fb"
  ],
  "author": {
    "name": "Eric Dumazet",
    "email": "eric.dumazet@gmail.com",
    "time": "Wed Apr 27 22:56:07 2011 +0000"
  },
  "committer": {
    "name": "David S. Miller",
    "email": "davem@davemloft.net",
    "time": "Mon May 02 15:26:28 2011 -0700"
  },
  "message": "net: dont hold rtnl mutex during netlink dump callbacks\n\nFour years ago, Patrick made a change to hold rtnl mutex during netlink\ndump callbacks.\n\nI believe it was a wrong move. This slows down concurrent dumps, making\ngood old /proc/net/ files faster than rtnetlink in some situations.\n\nThis occurred to me because one \"ip link show dev ...\" was _very_ slow\non a workload adding/removing network devices in background.\n\nAll dump callbacks are able to use RCU locking now, so this patch does\nroughly a revert of commits :\n\n1c2d670f366 : [RTNETLINK]: Hold rtnl_mutex during netlink dump callbacks\n6313c1e0992 : [RTNETLINK]: Remove unnecessary locking in dump callbacks\n\nThis let writers fight for rtnl mutex and readers going full speed.\n\nIt also takes care of phonet : phonet_route_get() is now called from rcu\nread section. I renamed it to phonet_route_get_rcu()\n\nSigned-off-by: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nCc: Patrick McHardy \u003ckaber@trash.net\u003e\nCc: Remi Denis-Courmont \u003cremi.denis-courmont@nokia.com\u003e\nAcked-by: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
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      "old_mode": 33188,
      "old_path": "include/net/phonet/pn_dev.h",
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      "new_path": "include/net/phonet/pn_dev.h"
    },
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      "old_mode": 33188,
      "old_path": "net/bridge/br_netlink.c",
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      "new_mode": 33188,
      "new_path": "net/bridge/br_netlink.c"
    },
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      "type": "modify",
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      "old_mode": 33188,
      "old_path": "net/core/fib_rules.c",
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      "new_mode": 33188,
      "new_path": "net/core/fib_rules.c"
    },
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      "old_path": "net/core/rtnetlink.c",
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      "new_path": "net/core/rtnetlink.c"
    },
    {
      "type": "modify",
      "old_id": "0dcaa903e00e0f4ce4eb53ebfe150878f7d26e06",
      "old_mode": 33188,
      "old_path": "net/decnet/dn_dev.c",
      "new_id": "404fa15910274f65f13298d546e323578805229e",
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      "new_path": "net/decnet/dn_dev.c"
    },
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      "old_path": "net/ipv6/ip6_fib.c",
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      "new_mode": 33188,
      "new_path": "net/ipv6/ip6_fib.c"
    },
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      "type": "modify",
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      "new_path": "net/phonet/pn_netlink.c"
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}