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Btrfs: add -o discard option
authorChristoph Hellwig <hch@lst.de>
Wed, 14 Oct 2009 13:24:59 +0000 (09:24 -0400)
committerChris Mason <chris.mason@oracle.com>
Wed, 14 Oct 2009 14:32:49 +0000 (10:32 -0400)
commite244a0aeb6a599c19a7c802cda6e2d67c847b154
tree392d8d48c4e6676a552230135ad448d522007ecetree
parent86df7eb921a009515285e7171363fa57dd2d7d31commit | diff
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>
fs/btrfs/ctree.h diff | blob | blame | history
fs/btrfs/extent-tree.c diff | blob | blame | history
fs/btrfs/super.c diff | blob | blame | history
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