[v3] Updated locking documentation for transaction_t
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Message ID 20190408083500.66759-1-alexander.lochmann@tu-dortmund.de
State New
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  • [v3] Updated locking documentation for transaction_t
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Commit Message

Alexander Lochmann April 8, 2019, 8:35 a.m. UTC
We used LockDoc to derive locking rules for each member
of struct transaction_t.
Based on those results, we extended the existing documentation
by more members of struct transaction_t, and updated the existing
documentation.

Signed-off-by: Alexander Lochmann <alexander.lochmann@tu-dortmund.de>
Signed-off-by: Horst Schirmeier <horst.schirmeier@tu-dortmund.de>
---
 include/linux/jbd2.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

Alexander Lochmann June 20, 2019, 8:45 p.m. UTC | #1
Hi Ted,

Have you had the chance to review the most recent version of the patch?
Does it look reasonable to you?

Cheers,
Alex

On 08.04.19 10:35, Alexander Lochmann wrote:
> We used LockDoc to derive locking rules for each member
> of struct transaction_t.
> Based on those results, we extended the existing documentation
> by more members of struct transaction_t, and updated the existing
> documentation.
> 
> Signed-off-by: Alexander Lochmann <alexander.lochmann@tu-dortmund.de>
> Signed-off-by: Horst Schirmeier <horst.schirmeier@tu-dortmund.de>
> ---
>  include/linux/jbd2.h | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
> index 0f919d5fe84f..34b728e2b702 100644
> --- a/include/linux/jbd2.h
> +++ b/include/linux/jbd2.h
> @@ -534,6 +534,7 @@ struct transaction_chp_stats_s {
>   * The transaction keeps track of all of the buffers modified by a
>   * running transaction, and all of the buffers committed but not yet
>   * flushed to home for finished transactions.
> + * (Locking Documentation improved by LockDoc)
>   */
>  
>  /*
> @@ -652,12 +653,12 @@ struct transaction_s
>  	unsigned long		t_start;
>  
>  	/*
> -	 * When commit was requested
> +	 * When commit was requested [journal_t.j_state_lock]
>  	 */
>  	unsigned long		t_requested;
>  
>  	/*
> -	 * Checkpointing stats [j_checkpoint_sem]
> +	 * Checkpointing stats [journal_t.j_list_lock]
>  	 */
>  	struct transaction_chp_stats_s t_chp_stats;
>  
>

Patch
diff mbox series

diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 0f919d5fe84f..34b728e2b702 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -534,6 +534,7 @@  struct transaction_chp_stats_s {
  * The transaction keeps track of all of the buffers modified by a
  * running transaction, and all of the buffers committed but not yet
  * flushed to home for finished transactions.
+ * (Locking Documentation improved by LockDoc)
  */
 
 /*
@@ -652,12 +653,12 @@  struct transaction_s
 	unsigned long		t_start;
 
 	/*
-	 * When commit was requested
+	 * When commit was requested [journal_t.j_state_lock]
 	 */
 	unsigned long		t_requested;
 
 	/*
-	 * Checkpointing stats [j_checkpoint_sem]
+	 * Checkpointing stats [journal_t.j_list_lock]
 	 */
 	struct transaction_chp_stats_s t_chp_stats;