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commit1f0d5c911bupstream. We expect 64-bit calculation result from below statement, however in 32-bit machine, looped left shift operation on pgoff_t type variable may cause overflow issue, fix it by forcing type cast. page->index << PAGE_SHIFT; Fixes:26de9b1171("f2fs: avoid unnecessary updating inode during fsync") Fixes:0a2aa8fbb9("f2fs: refactor __exchange_data_block for speed up") Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.