Btrfs: add btrfs_trim_fs() to handle FITRIM
We take an free extent out from allocator, trim it, then put it back, but before we trim the block group, we should make sure the block group is cached, so plus a little change to make cache_block_group() run without a transaction. Signed-off-by:Li Dongyang <lidongyang@novell.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
parent
5378e607
Please register or sign in to comment