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Restart to update codes to adapt the newest linux kernel.     Cheng Wu July 10, 2019
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update: 
July 11, 2019 --- v4.18 --- adapt to redhat 8.0 (kernel 4.18) and centos 7.4 (kernel 3.10 but using wait.h 3.17, bitops.h 3.16 etc. ). set version to v4.18 to correspond with linux kernel version.



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Fork from https://github.com/facebookarchive/flashcache on July 10, 2019
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This project is not actively maintained. Proceed at your own risk!_**
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License : Everything in flashcache components released under GPL v2.

Update : Added the flashcache-wt directory, which contains a
(separate) module for a write through flashcache. For more 
details, look at flashcache-wt/README.

Building Flashcache :
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Update : Vadim Tkachenko (with help from Mohan), ported 
Flashcache to later Linux releases. We now have built 
Flashcache on 2.6.18, 2.6.20 and 2.6.27-32. We have tested 
Flashcache on 2.6.18, 2.6.20, 2.6.27 and 2.6.32.

You'll need the entire kernel source tree in order to build
flashcache.

At the top directory, run

make KERNEL_TREE=<root of the kernel source tree>

This builds both the flashcache.ko and 3 utilities.

flascache-sa-guide.txt has details on how to create and load
flashcache volumes.

Mohan Srinivasan
Paul Saab

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