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| author | Harshad Shirwadkar <harshadshirwadkar@gmail.com> | 2020-10-15 13:37:58 -0700 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-10-21 23:22:37 -0400 |
| commit | 5b849b5f96b47d82b5a432d8b91a8ad260e1de46 (patch) | |
| tree | ce8db17eb198b300b591bf088463781f690efcac /include/linux/jbd2.h | |
| parent | aa75f4d3daaeb1389b9cce9d6b84401eaf228d4e (diff) | |
| download | lwn-5b849b5f96b47d82b5a432d8b91a8ad260e1de46.tar.gz lwn-5b849b5f96b47d82b5a432d8b91a8ad260e1de46.zip | |
jbd2: fast commit recovery path
This patch adds fast commit recovery support in JBD2.
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20201015203802.3597742-7-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux/jbd2.h')
| -rw-r--r-- | include/linux/jbd2.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index a009d9b9c620..fb3d71ad6eea 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -751,6 +751,11 @@ jbd2_time_diff(unsigned long start, unsigned long end) #define JBD2_NR_BATCH 64 +enum passtype {PASS_SCAN, PASS_REVOKE, PASS_REPLAY}; + +#define JBD2_FC_REPLAY_STOP 0 +#define JBD2_FC_REPLAY_CONTINUE 1 + /** * struct journal_s - The journal_s type is the concrete type associated with * journal_t. @@ -1248,6 +1253,21 @@ struct journal_s */ void (*j_fc_cleanup_callback)(struct journal_s *journal, int); + /* + * @j_fc_replay_callback: + * + * File-system specific function that performs replay of a fast + * commit. JBD2 calls this function for each fast commit block found in + * the journal. This function should return JBD2_FC_REPLAY_CONTINUE + * to indicate that the block was processed correctly and more fast + * commit replay should continue. Return value of JBD2_FC_REPLAY_STOP + * indicates the end of replay (no more blocks remaining). A negative + * return value indicates error. + */ + int (*j_fc_replay_callback)(struct journal_s *journal, + struct buffer_head *bh, + enum passtype pass, int off, + tid_t expected_commit_id); }; #define jbd2_might_wait_for_commit(j) \ |