KernelTrap: Adaptive Readahead

“Wu Fengguang has been maintaining an adaptive readahead
patchset for the Linux kernel. One of the patches from the set
includes a kconfig option to enable/disable the read-ahead logic
explaining:

“‘Readahead is a technique employed by the kernel in an attempt
to improve file reading performance. If the kernel has reason to
believe that a particular file is being read sequentially, it will
attempt to read blocks from the file into memory before the
application requests them…'”

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