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f6df8f234e
This patch introduces a sysfs interface readdir_ra to enable/disable readaheading inode block in f2fs_readdir. When readdir_ra is enabled, it improves the performance of "readdir + stat". For 300,000 files: time find /data/test > /dev/null disable readdir_ra: 1m25.69s real 0m01.94s user 0m50.80s system enable readdir_ra: 0m18.55s real 0m00.44s user 0m15.39s system Signed-off-by: Sheng Yong <shengyong1@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.