)]}'
{
  "commit": "b678626289708f1a3b1f2a46671bf3e0f00282e5",
  "tree": "408531c5a85d37174a7a53a6155e3c08de68dab4",
  "parents": [
    "92c61645d8b305557e25a7e9394be00b84efe623"
  ],
  "author": {
    "name": "David Howells",
    "email": "dhowells@redhat.com",
    "time": "Fri Feb 17 22:49:09 2023 +0000"
  },
  "committer": {
    "name": "David Howells",
    "email": "dhowells@redhat.com",
    "time": "Thu Mar 16 13:57:47 2023 +0000"
  },
  "message": "pipe: Use a linked-list instead of a ring buffer\n\nUse a linked-list of pipe_buffers rather than a ring, allocating them as we\nneed them.  We cache one on pipe_inode_info struct for fast use by ordinary\npipe writes, just as we can cache a spare page.\n\nDoing this will allow the pipe_buffer to have an integral variable-sized\nbio_vec array pointing to the content of the buffer, allowing a buffer to\npoint to multiple folios.\n\nHaving a pipe_buffer that can point to multiple pages then allows splice to\nappend an entire splice segment consisting of multipe pages in a single\npipe buffer.\n\nThe pipe buffer bvec can then be passed directly to, say, sendmsg() with\nMSG_SPLICE_PAGES when splicing from the pipe, allowing the socket to be a\nbit more efficient.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n",
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