[Bug 12603] New: firefox downloads hang on ext4; fine on ext3

[bugme-daemon@bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=12603

           Summary: firefox downloads hang on ext4; fine on ext3
           Product: File System
           Version: 2.5
     KernelVersion: 2.6.27.10
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext4
        AssignedTo: fs_ext4@kernel-bugs.osdl.org
        ReportedBy: avery@shadypixel.com


Distribution:

Debian testing/unstable

Software Environment:

Kernel is actually from http://wiki.debian.org/DebianKernel. Version is
2.6.27-1~experimental.1~snapshot.12516, which appears to be based on 2.6.27.10.

Problem Description:

I mentioned this in my last bug report
(http://bugzilla.kernel.org/show_bug.cgi?id=12424), but it seems that was
something unrelated (I think). My firefox downloads have been hanging off and
on since reformatting ext3->ext4. I've finally found a way to reproduce this
100% of the time.

Steps:
1.) download large file to folder on ext4 fs
2.) close all firefox windows except the download manager before download
completes
3.) download will hang at nearly 100%

This happens every single time. If I keep another firefox window open (beside
the downloads mini-window), the download always completes successfully. If I do
the same steps except save the file to an ext3 fs, it always works.


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