EXT4 File-System Updated For Linux 3.9
Written by Michael Larabel in Linux Kernel on 26 February 2013 at 04:56 PM EST. 2 Comments
The EXT4 file-system in the forthcoming Linux 3.9 kernel will support using the previously-introduced punch hole functionality for inodes not using extent maps.

Hole punching as it pertains to file-systems is marking a portion of a file as being no longer needed and can then be reclaimed. With Linux 3.9, there's hole punching support for non-extent-mapped files. Hole punching support has also come to other Linux file-systems.

The EXT4 updates in Linux 3.9 also address some race conditions, take care of some potential null pointer dereferences, memory leaks, and an optimization in the JDB2 layer. There's also some enhancements to the extent status tree.

More details on the EXT4 file-system updates can be found with the Ted Ts'o pull request.

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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