On 9/12/13 10:29 AM, Calvin Walton wrote:
...
> Having this all integrated into the filesystem itself is quite a nice
> change for the better - the old way was definitely a hack! I suppose
> this was added sometime in the 2011 timeframe?
commit 367a51a339020ba4d9edb0ce0f21d65bd50b00c9
Author: Lukas Czerner <lczerner@xxxxxxxxxx>
Date: Wed Oct 27 21:30:11 2010 -0400
fs: Add FITRIM ioctl
Adds an filesystem independent ioctl to allow implementation of file
system batched discard support.
the userspace tool came around that time as well.
-Eric
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