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


Dmitry Monakhov <dmonakhov@xxxxxxxxxx> changed:

           What    |Removed                     |Added
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                 CC|                            |dmonakhov@xxxxxxxxxx




--- Comment #1 from Dmitry Monakhov <dmonakhov@xxxxxxxxxx>  2010-03-19 12:40:57 ---
Some time ago i've posted comat discard support which simulate 
discard by generating simple zero filled request 
http://lkml.org/lkml/2010/2/11/74
Many changes was requested so i'm still working on new version (it will be
ready
soon).
But it may be useful for debugging needs with conjunction with blktrace.

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