)]}'
{
  "commit": "9e4a5bda89034502fb144331e71a0efdfd5fae97",
  "tree": "89706c956da4b6cddf04d60be736e8a05f3f2679",
  "parents": [
    "8713e01295140f674a41f2199b0f7ca99dfb69d5"
  ],
  "author": {
    "name": "Andrea Righi",
    "email": "righi.andrea@gmail.com",
    "time": "Thu Apr 30 15:08:57 2009 -0700"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@linux-foundation.org",
    "time": "Sat May 02 15:36:10 2009 -0700"
  },
  "message": "mm: prevent divide error for small values of vm_dirty_bytes\n\nAvoid setting less than two pages for vm_dirty_bytes: this is necessary to\navoid potential division by 0 (like the following) in get_dirty_limits().\n\n[   49.951610] divide error: 0000 [#1] PREEMPT SMP\n[   49.952195] last sysfs file: /sys/devices/pci0000:00/0000:00:01.1/host0/target0:0:0/0:0:0:0/block/sda/uevent\n[   49.952195] CPU 1\n[   49.952195] Modules linked in: pcspkr\n[   49.952195] Pid: 3064, comm: dd Not tainted 2.6.30-rc3 #1\n[   49.952195] RIP: 0010:[\u003cffffffff802d39a9\u003e]  [\u003cffffffff802d39a9\u003e] get_dirty_limits+0xe9/0x2c0\n[   49.952195] RSP: 0018:ffff88001de03a98  EFLAGS: 00010202\n[   49.952195] RAX: 00000000000000c0 RBX: ffff88001de03b80 RCX: 28f5c28f5c28f5c3\n[   49.952195] RDX: 0000000000000000 RSI: 00000000000000c0 RDI: 0000000000000000\n[   49.952195] RBP: ffff88001de03ae8 R08: 0000000000000000 R09: 0000000000000000\n[   49.952195] R10: ffff88001ddda9a0 R11: 0000000000000001 R12: 0000000000000001\n[   49.952195] R13: ffff88001fbc8218 R14: ffff88001de03b70 R15: ffff88001de03b78\n[   49.952195] FS:  00007fe9a435b6f0(0000) GS:ffff8800025d9000(0000) knlGS:0000000000000000\n[   49.952195] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[   49.952195] CR2: 00007fe9a39ab000 CR3: 000000001de38000 CR4: 00000000000006e0\n[   49.952195] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[   49.952195] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400\n[   49.952195] Process dd (pid: 3064, threadinfo ffff88001de02000, task ffff88001ddda250)\n[   49.952195] Stack:\n[   49.952195]  ffff88001fa0de00 ffff88001f2dbd70 ffff88001f9fe800 000080b900000000\n[   49.952195]  00000000000000c0 ffff8800027a6100 0000000000000400 ffff88001fbc8218\n[   49.952195]  0000000000000000 0000000000000600 ffff88001de03bb8 ffffffff802d3ed7\n[   49.952195] Call Trace:\n[   49.952195]  [\u003cffffffff802d3ed7\u003e] balance_dirty_pages_ratelimited_nr+0x1d7/0x3f0\n[   49.952195]  [\u003cffffffff80368f8e\u003e] ? ext3_writeback_write_end+0x9e/0x120\n[   49.952195]  [\u003cffffffff802cc7df\u003e] generic_file_buffered_write+0x12f/0x330\n[   49.952195]  [\u003cffffffff802cce8d\u003e] __generic_file_aio_write_nolock+0x26d/0x460\n[   49.952195]  [\u003cffffffff802cda32\u003e] ? generic_file_aio_write+0x52/0xd0\n[   49.952195]  [\u003cffffffff802cda49\u003e] generic_file_aio_write+0x69/0xd0\n[   49.952195]  [\u003cffffffff80365fa6\u003e] ext3_file_write+0x26/0xc0\n[   49.952195]  [\u003cffffffff803034d1\u003e] do_sync_write+0xf1/0x140\n[   49.952195]  [\u003cffffffff80290d1a\u003e] ? get_lock_stats+0x2a/0x60\n[   49.952195]  [\u003cffffffff80280730\u003e] ? autoremove_wake_function+0x0/0x40\n[   49.952195]  [\u003cffffffff8030411b\u003e] vfs_write+0xcb/0x190\n[   49.952195]  [\u003cffffffff803042d0\u003e] sys_write+0x50/0x90\n[   49.952195]  [\u003cffffffff8022ff6b\u003e] system_call_fastpath+0x16/0x1b\n[   49.952195] Code: 00 00 00 2b 05 09 1c 17 01 48 89 c6 49 0f af f4 48 c1 ee 02 48 89 f0 48 f7 e1 48 89 d6 31 d2 48 c1 ee 02 48 0f af 75 d0 48 89 f0 \u003c48\u003e f7 f7 41 8b 95 ac 01 00 00 48 89 c7 49 0f af d4 48 c1 ea 02\n[   49.952195] RIP  [\u003cffffffff802d39a9\u003e] get_dirty_limits+0xe9/0x2c0\n[   49.952195]  RSP \u003cffff88001de03a98\u003e\n[   50.096523] ---[ end trace 008d7aa02f244d7b ]---\n\nSigned-off-by: Andrea Righi \u003crighi.andrea@gmail.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\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": "97c4b3284329bebc051ba43840571784652306f4",
      "old_mode": 33188,
      "old_path": "Documentation/sysctl/vm.txt",
      "new_id": "b716d33912d8a02b219b6c39e0270c01b7b733a4",
      "new_mode": 33188,
      "new_path": "Documentation/sysctl/vm.txt"
    },
    {
      "type": "modify",
      "old_id": "e3d2c7dd59b9791ad14c8b48e5fb804a38052ac8",
      "old_mode": 33188,
      "old_path": "kernel/sysctl.c",
      "new_id": "ea78fa101ad6a4325209f6bd9b3c350298d1e4e2",
      "new_mode": 33188,
      "new_path": "kernel/sysctl.c"
    }
  ]
}