diff options
| author | Harshad Shirwadkar | 2020-10-15 13:37:55 -0700 |
|---|---|---|
| committer | Theodore Ts'o | 2020-10-21 23:22:26 -0400 |
| commit | 6866d7b3f2bb4f011041ba54c98b1584497fe2fd (patch) | |
| tree | 4ae01bbb3dc62134eaaea5e8324da97bcb117224 /include/linux | |
| parent | 995a3ed67fc8c0e3301a770016fb66f1bbf15ec8 (diff) | |
ext4 / jbd2: add fast commit initialization
This patch adds fast commit area trackers in the journal_t
structure. These are initialized via the jbd2_fc_init() routine that
this patch adds. This patch also adds ext4/fast_commit.c and
ext4/fast_commit.h files for fast commit code that will be added in
subsequent patches in this series.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20201015203802.3597742-4-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/jbd2.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 0685cc95e501..008629b4d615 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -919,6 +919,30 @@ struct journal_s unsigned long j_last; /** + * @j_fc_first: + * + * The block number of the first fast commit block in the journal + * [j_state_lock]. + */ + unsigned long j_fc_first; + + /** + * @j_fc_off: + * + * Number of fast commit blocks currently allocated. + * [j_state_lock]. + */ + unsigned long j_fc_off; + + /** + * @j_fc_last: + * + * The block number one beyond the last fast commit block in the journal + * [j_state_lock]. + */ + unsigned long j_fc_last; + + /** * @j_dev: Device where we store the journal. */ struct block_device *j_dev; @@ -1069,6 +1093,12 @@ struct journal_s struct buffer_head **j_wbuf; /** + * @j_fc_wbuf: Array of fast commit bhs for + * jbd2_journal_commit_transaction. + */ + struct buffer_head **j_fc_wbuf; + + /** * @j_wbufsize: * * Size of @j_wbuf array. @@ -1076,6 +1106,13 @@ struct journal_s int j_wbufsize; /** + * @j_fc_wbufsize: + * + * Size of @j_fc_wbuf array. + */ + int j_fc_wbufsize; + + /** * @j_last_sync_writer: * * The pid of the last person to run a synchronous operation @@ -1535,6 +1572,8 @@ void __jbd2_log_wait_for_space(journal_t *journal); extern void __jbd2_journal_drop_transaction(journal_t *, transaction_t *); extern int jbd2_cleanup_journal_tail(journal_t *); +/* Fast commit related APIs */ +int jbd2_fc_init(journal_t *journal, int num_fc_blks); /* * is_journal_abort * |