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Jiucheng Xu
2308de27c0
On 32-bit architectures, when GFP_NOFS is used, the file cache for write operations cannot be allocated from the highmem and CMA. Since mapping->gfp_mask is set to GFP_HIGHUSER_MOVABLE during inode allocation, using mapping_gfp_mask(mapping) as the GFP flag of getting file cache for writing is more efficient for 32-bit architectures. Additionally, use FGP_NOFS to avoid potential deadlock issues caused by GFP_FS in GFP_HIGHUSER_MOVABLE Signed-off-by: Jiucheng Xu <jiucheng.xu@amlogic.com> Reviewed-by: Chao Yu <chao@kernel.org> 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 reStructuredText 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.