tree e66c57f34cdb28c45c34dfc63a93c72791316fe0
parent a1aebc1e2da9a7bee4ff8cce510b08f469d1929e
author Theodore Ts'o <tytso@mit.edu> 1224165987 -0400
committer Theodore Ts'o <tytso@mit.edu> 1224165987 -0400

ext4: let the block device know when unused blocks can be discarded

Let the block device know when unused blocks can be discarded, using
the new sb_issue_discard() interface.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>