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| author | Theodore Ts'o <tytso@mit.edu> | 2008-10-16 20:00:24 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-10-16 20:00:24 -0400 |
| commit | 3e624fc72fba09b6f999a9fbb87b64efccd38036 (patch) | |
| tree | f0a1feac377788b27ea704519a33f367a6d415f9 /include/linux/jbd2.h | |
| parent | 22359f5745eb26bd3205a1ede7968c8944398220 (diff) | |
| download | lwn-3e624fc72fba09b6f999a9fbb87b64efccd38036.tar.gz lwn-3e624fc72fba09b6f999a9fbb87b64efccd38036.zip | |
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>
Diffstat (limited to 'include/linux/jbd2.h')
| -rw-r--r-- | include/linux/jbd2.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 463d6f10b64f..c7d106ef22e2 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -641,6 +641,11 @@ struct transaction_s */ int t_handle_count; + /* + * For use by the filesystem to store fs-specific data + * structures associated with the transaction + */ + struct list_head t_private_list; }; struct transaction_run_stats_s { @@ -935,6 +940,10 @@ struct journal_s pid_t j_last_sync_writer; + /* This function is called when a transaction is closed */ + void (*j_commit_callback)(journal_t *, + transaction_t *); + /* * Journal statistics */ |