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Bug 455452 - RFE: delalloc helpers for ext4
Summary: RFE: delalloc helpers for ext4
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.3
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Eric Sandeen
QA Contact: Martin Jenner
Depends On:
TreeView+ depends on / blocked
Reported: 2008-07-15 15:47 UTC by Eric Sandeen
Modified: 2009-01-20 20:22 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2009-01-20 20:22:30 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2009:0225 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 5.3 kernel security and bug fix update 2009-01-20 16:06:24 UTC

Description Eric Sandeen 2008-07-15 15:47:15 UTC
Although I don't currently plan to ship delalloc-enabled ext4 in the RHEL5.3
tech preview, it would be nice to have the minimal vfs/mm helpers in place in
the RHEL5.3 kernel for testing & future updates.

So this bug requests the addition of those changes for that support.

It's a minimal patch - current version is at:;f=delalloc-vfs.patch;h=2d06314d140f921fc93e32ce87c31cd56afba60b;hb=HEAD


Comment 1 RHEL Product and Program Management 2008-07-15 16:03:43 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update

Comment 3 Eric Sandeen 2008-08-11 20:44:38 UTC
Adding to ext4 tracker.

The patch is a bit bigger than the previous comment suggests, but it's not invasive.  5.3 may ship w/o delalloc support in ext4, but it would still be good, I think, to have the hooks in the kernel for further development and testing, and it would let us provide test ext4 kernel modules with delalloc, and still run on a stock RHEL5.3 kernel.


Comment 5 Don Zickus 2008-09-15 14:18:10 UTC
in kernel-2.6.18-115.el5
You can download this test kernel from

Comment 9 errata-xmlrpc 2009-01-20 20:22:30 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

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