btrfs: Add nodiscard mount option.
authorQu Wenruo <quwenruo@cn.fujitsu.com>
Mon, 6 Jan 2014 01:58:27 +0000 (09:58 +0800)
committerChris Mason <clm@fb.com>
Tue, 28 Jan 2014 21:20:17 +0000 (13:20 -0800)
commite07a2ade4426a2cbafae4018aa7b6944bb627a6e
tree7aebc7d70571ee40fb545dd8e85b492ad3b2da27
parentfc0ca9af180b91aad2fbf2fe3b16a12e1e05a760
btrfs: Add nodiscard mount option.

Add nodiscard mount option to disable discard with remount option.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
Documentation/filesystems/btrfs.txt
fs/btrfs/super.c