Patchwork [08/29] jbd2: Remove outdated comment

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Submitter Jan Kara
Date April 8, 2013, 9:32 p.m.
Message ID <1365456754-29373-9-git-send-email-jack@suse.cz>
Download mbox | patch
Permalink /patch/234895/
State Superseded
Headers show

Comments

Jan Kara - April 8, 2013, 9:32 p.m.
The comment about credit estimates isn't true anymore. We do what the
comment describes now.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/jbd2/transaction.c |   10 ----------
 1 files changed, 0 insertions(+), 10 deletions(-)
Zheng Liu - May 3, 2013, 2:20 p.m.
On Mon, Apr 08, 2013 at 11:32:13PM +0200, Jan Kara wrote:
> The comment about credit estimates isn't true anymore. We do what the
> comment describes now.
> 
> Signed-off-by: Jan Kara <jack@suse.cz>

Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Regards,
                                                - Zheng

> ---
>  fs/jbd2/transaction.c |   10 ----------
>  1 files changed, 0 insertions(+), 10 deletions(-)
> 
> diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
> index 81df09c..74cfbd3 100644
> --- a/fs/jbd2/transaction.c
> +++ b/fs/jbd2/transaction.c
> @@ -283,16 +283,6 @@ repeat:
>  	 * reduce the free space arbitrarily.  Be careful to account for
>  	 * those buffers when checkpointing.
>  	 */
> -
> -	/*
> -	 * @@@ AKPM: This seems rather over-defensive.  We're giving commit
> -	 * a _lot_ of headroom: 1/4 of the journal plus the size of
> -	 * the committing transaction.  Really, we only need to give it
> -	 * committing_transaction->t_outstanding_credits plus "enough" for
> -	 * the log control blocks.
> -	 * Also, this test is inconsistent with the matching one in
> -	 * jbd2_journal_extend().
> -	 */
>  	if (__jbd2_log_space_left(journal) < jbd_space_needed(journal)) {
>  		jbd_debug(2, "Handle %p waiting for checkpoint...\n", handle);
>  		atomic_sub(nblocks, &transaction->t_outstanding_credits);
> -- 
> 1.7.1
> 
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Patch

diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 81df09c..74cfbd3 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -283,16 +283,6 @@  repeat:
 	 * reduce the free space arbitrarily.  Be careful to account for
 	 * those buffers when checkpointing.
 	 */
-
-	/*
-	 * @@@ AKPM: This seems rather over-defensive.  We're giving commit
-	 * a _lot_ of headroom: 1/4 of the journal plus the size of
-	 * the committing transaction.  Really, we only need to give it
-	 * committing_transaction->t_outstanding_credits plus "enough" for
-	 * the log control blocks.
-	 * Also, this test is inconsistent with the matching one in
-	 * jbd2_journal_extend().
-	 */
 	if (__jbd2_log_space_left(journal) < jbd_space_needed(journal)) {
 		jbd_debug(2, "Handle %p waiting for checkpoint...\n", handle);
 		atomic_sub(nblocks, &transaction->t_outstanding_credits);