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btrfs: replace barriers with explicit flush / FUA usage

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Switch to the WRITE_FLUSH_FUA flag for log writes, remove the EOPNOTSUPP
detection for barriers and stop setting the barrier flag for discards.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Christoph Hellwig
2010-08-18 05:29:12 -04:00
committed by Jens Axboe
parent 80f6c29d8a
commit c3b9a62c8f
4 changed files with 5 additions and 21 deletions
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fs/btrfs/volumes.h
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@@ -42,7 +42,6 @@ struct btrfs_device {
int running_pending;
u64 generation;
int barriers;
int writeable;
int in_fs_metadata;