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Yan, Zheng 12b69d5f6f ceph: abort osd requests on force umount
This avoid force umount waiting on page writeback:

  io_schedule+0xd/0x30
  wait_on_page_bit_common+0xc6/0x130
  __filemap_fdatawait_range+0xbd/0x100
  filemap_fdatawait_keep_errors+0x15/0x40
  sync_inodes_sb+0x1cf/0x240
  sync_filesystem+0x52/0x90
  generic_shutdown_super+0x1d/0x110
  ceph_kill_sb+0x28/0x80 [ceph]
  deactivate_locked_super+0x35/0x60
  cleanup_mnt+0x36/0x70
  task_work_run+0x79/0xa0
  exit_to_usermode_loop+0x62/0x70
  do_syscall_64+0xdb/0xf0
  entry_SYSCALL_64_after_hwframe+0x44/0xa9
  0xffffffffffffffff

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2018-06-04 20:45:57 +02:00
2018-04-26 09:02:01 -06:00
2018-01-06 10:59:44 -07:00
2018-05-24 20:16:47 +02:00
2018-06-03 14:15:21 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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