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36e4d95891
If the swapfile isn't created by pin and fallocate, it can't be guaranteed section-aligned, so it may be selected by f2fs gc. When gc_pin_file_threshold is reached, the address of swapfile may change, but won't be synchronized to swap_extent, so swap will write to wrong address, which will cause data corruption. Signed-off-by: Huang Jianan <huangjianan@oppo.com> Signed-off-by: Guo Weichao <guoweichao@oppo.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> 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.