)]}'
{
  "commit": "bfab36e81611e60573b84eb4e4b4c8d8545b2320",
  "tree": "acd151a4c85459dcd2f6575ceb385090ebaaf984",
  "parents": [
    "f26e51f67ae6a75ffc57b96cf5fe096f75e778cb"
  ],
  "author": {
    "name": "Anton Altaparmakov",
    "email": "aia21@cam.ac.uk",
    "time": "Fri Oct 12 09:37:15 2007 +0100"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@woody.linux-foundation.org",
    "time": "Fri Oct 12 09:16:30 2007 -0700"
  },
  "message": "NTFS: Fix a mount time deadlock.\n\nBig thanks go to Mathias Kolehmainen for reporting the bug, providing\ndebug output and testing the patches I sent him to get it working.\n\nThe fix was to stop calling ntfs_attr_set() at mount time as that causes\nbalance_dirty_pages_ratelimited() to be called which on systems with\nlittle memory actually tries to go and balance the dirty pages which tries\nto take the s_umount semaphore but because we are still in fill_super()\nacross which the VFS holds s_umount for writing this results in a\ndeadlock.\n\nWe now do the dirty work by hand by submitting individual buffers.  This\nhas the annoying \"feature\" that mounting can take a few seconds if the\njournal is large as we have clear it all.  One day someone should improve\non this by deferring the journal clearing to a helper kernel thread so it\ncan be done in the background but I don\u0027t have time for this at the moment\nand the current solution works fine so I am leaving it like this for now.\n\nSigned-off-by: Anton Altaparmakov \u003caia21@cantab.net\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n",
  "tree_diff": [
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