tree f0a1feac377788b27ea704519a33f367a6d415f9
parent 22359f5745eb26bd3205a1ede7968c8944398220
author Theodore Ts'o <tytso@mit.edu> 1224201624 -0400
committer Theodore Ts'o <tytso@mit.edu> 1224201624 -0400

ext4: Replace hackish ext4_mb_poll_new_transaction with commit callback

The multiblock allocator needs to be able to release blocks (and issue
a blkdev discard request) when the transaction which freed those
blocks is committed.  Previously this was done via a polling mechanism
when blocks are allocated or freed.  A much better way of doing things
is to create a jbd2 callback function and attaching the list of blocks
to be freed directly to the transaction structure.

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