From: Christoph Hellwig <hch@lst.de>
Date: Wed, 14 Oct 2009 13:24:59 +0000 (-0400)
Subject: Btrfs: add -o discard option
X-Git-Tag: v2.6.32-rc5~8^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e244a0aeb6a599c19a7c802cda6e2d67c847b154;p=pandora-kernel.git

Btrfs: add -o discard option

Enable discard by default is not a good idea given the the trim speed
of SSD prototypes we've seen, and the carecteristics for many high-end
arrays.  Turn of discards by default and require the -o discard option
to enable them on.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

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