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由 Wang Xiaoguang 提交于
This patch divides btrfs_update_reserved_bytes() into btrfs_add_reserved_bytes() and btrfs_free_reserved_bytes(), and next patch will extend btrfs_add_reserved_bytes()to fix some false ENOSPC error, please see later patch for detailed info. Signed-off-by: NWang Xiaoguang <wangxg.fnst@cn.fujitsu.com> Reviewed-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NChris Mason <clm@fb.com>
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