EROFS Looking To Be Promoted Out Of Linux's Staging Area
Written by Michael Larabel in Linux Storage on 7 July 2019 at 12:02 AM EDT. 3 Comments
LINUX STORAGE --
Huawei's EROFS file-system has been part of the mainline Linux kernel for about one year albeit as part of the "staging" area until it's been proven stable and mature. Now with this file-system reportedly in use on "10+ millions of Huawei Android mobile phones", they are looking to have this file-system promoted out of staging.

EROFS as a reminder is a read-only Linux file-system developed by Huawei and optimized for delivering solid performance. EROFS supports in-place I/O and in-place decompression among other features designed to deliver a fast read-only file-system and Huawei engineers continue to work to improve its performance as well as tack on other features. Iomap and direct I/O support are among the other features being worked on along with support for more compression schemes.

From this kernel thread, it looks like the EROFS promotion out of staging will happen. However, it's too late to aim this change for the imminent Linux 5.3 merge window and as a result is a change we're likely to see happen later this year for Linux 5.4. By going out of staging they are also committing to a stable ABI and on-disk format.
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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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