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I am wondering if the lag fix proposed by xda-developers could harm the device in anyway. Quote from Google Code "Original use was for 'One Click Lag Fix' for the Samsung Galaxy S series, to create a loopback EXT2 device on top of Samsung's RFS in order to improve response time for applications."

Link to forum page about this: here.

How does it work exactly? What does "create loopback EXT2" mean?

I know the forum post clearly states it's been tested on a huge number of devices and it's working, but I want to understand what it does exactly and if there is any compromise by installing it? Thank you.

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Basically, it tricks the Android OS by using symbolic links and a large file formatted as ext2, rather than partitioning or formatting your device storage. In this way it's very safe. I've used it several times on several ROMs on my Galaxy S with no problems.

  • Thank you, Matthew. I'll give it a try then. Out of curiosity, if it's such a great solution why isn't it adopted by Google for future releases? This is me trying to understand if there are no strings attached / compromises and only good will come of it. :) – Francisc Jan 13 '11 at 20:43
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    @Francisc: because it is basically a hack to allow you to use ext2 without repartitioning the device. This means there is two file system drivers to manage a single partition, the ext2 driver and rfs driver. Even though there are two drivers in play, the hack is a still gain since ext2 driver is much more efficient at managing files than rfs. Google would never adopt such a hack, they instead would simply partition the flash storage using ext4, which they did in Nexus S. – Lie Ryan Jan 14 '11 at 14:46

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