)]}'
{
  "commit": "3a23dfe9d1689b8f7627e3f6fa8f8bd4a79bd704",
  "tree": "0b3f7b3090b566a984274eee627caea0616a2469",
  "parents": [
    "4b37574edf921d1a6e2759f7373b93530168995b"
  ],
  "author": {
    "name": "Andreas Gruenbacher",
    "email": "agruenba@redhat.com",
    "time": "Wed Oct 27 18:47:42 2021 +0200"
  },
  "committer": {
    "name": "Andreas Gruenbacher",
    "email": "agruenba@redhat.com",
    "time": "Wed Oct 27 22:29:57 2021 +0200"
  },
  "message": "fs: Avoid predictable page faults for sys_write() user buffer pages\n\nIntroduce a new fault_in_iov_iter_slow_readable() helper for faulting in\nan iterator via get_user_pages() instead of triggering page faults.\nThis is slower than a simple memory read when the underlying pages are\nresident, but avoids the page fault overhead when the underlying pages\nneed to be faulted in.\n\nUse fault_in_iov_iter_slow_readable() in generic_perform_write and\niomap_write_iter when reading from the user buffer fails.\n\nSigned-off-by: Andreas Gruenbacher \u003cagruenba@redhat.com\u003e\n",
  "tree_diff": [
    {
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      "new_path": "fs/iomap/buffered-io.c"
    },
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}