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b11fb56468
There are controlled by f2fs_freeze(). This fixes xfstests/generic/068 which is stuck at task:f2fs_ckpt-252:3 state:D stack: 0 pid: 5761 ppid: 2 flags:0x00004000 Call Trace: __schedule+0x44c/0x8a0 schedule+0x4f/0xc0 percpu_rwsem_wait+0xd8/0x140 ? percpu_down_write+0xf0/0xf0 __percpu_down_read+0x56/0x70 issue_checkpoint_thread+0x12c/0x160 [f2fs] ? wait_woken+0x80/0x80 kthread+0x114/0x150 ? __checkpoint_and_complete_reqs+0x110/0x110 [f2fs] ? kthread_park+0x90/0x90 ret_from_fork+0x22/0x30 Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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.
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.