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EXT4 File-System Updated For Linux 3.9

Linux Kernel

Published on 26 February 2013 04:56 PM EST
Written by Michael Larabel in Linux Kernel
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.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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