linux-ext4 - [Bug 15579] ext4 -o discard produces incorrect blocks of zeroes in newly created files under heavy read+truncate+append-new-file load

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Message-Id: <201003191813.o2JIDpA1030532@demeter.kernel.org>
Date:	Fri, 19 Mar 2010 18:13:51 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 15579] ext4 -o discard produces incorrect blocks of zeroes in
 newly created files under heavy read+truncate+append-new-file load

http://bugzilla.kernel.org/show_bug.cgi?id=15579





--- Comment #2 from Theodore Tso <tytso@....edu>  2010-03-19 18:13:46 ---
Created an attachment (id=25616)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=25616)
Proposed patch for this problem

Oh, sh*t.   If what I think is happening, is happening, this is definitely a
brown paper bag bug.

Does this fix it for you?

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