[PATCH] ocfs2: Revert "ocfs2: fix the la space leak when unmounting an ocfs2 volume"

[PATCH] ocfs2: Revert "ocfs2: fix the la space leak when unmounting an ocfs2 volume"

[Heming Zhao]

This reverts commit dfe6c5692fb5 ("ocfs2: fix the la space leak when
unmounting an ocfs2 volume").

In commit dfe6c5692fb5, the commit log "This bug has existed since the
initial OCFS2 code." is wrong. The correct introduction commit is
30dd3478c3cd ("ocfs2: correctly use ocfs2_find_next_zero_bit()").

The influence of commit dfe6c5692fb5 is that it provides a correct
fix for the latest kernel. however, it shouldn't be pushed to stable
branches. Let's use this commit to revert all branches that include
dfe6c5692fb5 and use a new fix method to fix commit 30dd3478c3cd.

Fixes: dfe6c5692fb5 ("ocfs2: fix the la space leak when unmounting an ocfs2 volume")
Signed-off-by: Heming Zhao <heming.zhao@suse.com>
Cc: <stable@vger.kernel.org>
---
 fs/ocfs2/localalloc.c | 19 -------------------
 1 file changed, 19 deletions(-)

diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index 8ac42ea81a17..5df34561c551 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -1002,25 +1002,6 @@ static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
 		start = bit_off + 1;
 	}
 
-	/* clear the contiguous bits until the end boundary */
-	if (count) {
-		blkno = la_start_blk +
-			ocfs2_clusters_to_blocks(osb->sb,
-					start - count);
-
-		trace_ocfs2_sync_local_to_main_free(
-				count, start - count,
-				(unsigned long long)la_start_blk,
-				(unsigned long long)blkno);
-
-		status = ocfs2_release_clusters(handle,
-				main_bm_inode,
-				main_bm_bh, blkno,
-				count);
-		if (status < 0)
-			mlog_errno(status);
-	}
-
 bail:
 	if (status)
 		mlog_errno(status);
-- 
2.43.0

Re: [PATCH] ocfs2: Revert "ocfs2: fix the la space leak when unmounting an ocfs2 volume"

[Heming Zhao]

Hi Greg,

The 4.19 branch also needs this patch.

- Heming

On 12/12/24 19:31, Heming Zhao wrote:
> This reverts commit dfe6c5692fb5 ("ocfs2: fix the la space leak when
> unmounting an ocfs2 volume").
> 
> In commit dfe6c5692fb5, the commit log "This bug has existed since the
> initial OCFS2 code." is wrong. The correct introduction commit is
> 30dd3478c3cd ("ocfs2: correctly use ocfs2_find_next_zero_bit()").
> 
> The influence of commit dfe6c5692fb5 is that it provides a correct
> fix for the latest kernel. however, it shouldn't be pushed to stable
> branches. Let's use this commit to revert all branches that include
> dfe6c5692fb5 and use a new fix method to fix commit 30dd3478c3cd.
> 
> Fixes: dfe6c5692fb5 ("ocfs2: fix the la space leak when unmounting an ocfs2 volume")
> Signed-off-by: Heming Zhao <heming.zhao@suse.com>
> Cc: <stable@vger.kernel.org>
> ---
>   fs/ocfs2/localalloc.c | 19 -------------------
>   1 file changed, 19 deletions(-)
> 
> diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
> index 8ac42ea81a17..5df34561c551 100644
> --- a/fs/ocfs2/localalloc.c
> +++ b/fs/ocfs2/localalloc.c
> @@ -1002,25 +1002,6 @@ static int ocfs2_sync_local_to_main(struct ocfs2_super *osb,
>   		start = bit_off + 1;
>   	}
>   
> -	/* clear the contiguous bits until the end boundary */
> -	if (count) {
> -		blkno = la_start_blk +
> -			ocfs2_clusters_to_blocks(osb->sb,
> -					start - count);
> -
> -		trace_ocfs2_sync_local_to_main_free(
> -				count, start - count,
> -				(unsigned long long)la_start_blk,
> -				(unsigned long long)blkno);
> -
> -		status = ocfs2_release_clusters(handle,
> -				main_bm_inode,
> -				main_bm_bh, blkno,
> -				count);
> -		if (status < 0)
> -			mlog_errno(status);
> -	}
> -
>   bail:
>   	if (status)
>   		mlog_errno(status);

Re: [PATCH] ocfs2: Revert "ocfs2: fix the la space leak when unmounting an ocfs2 volume"

[Greg KH]

On Thu, Dec 12, 2024 at 07:45:11PM +0800, Heming Zhao wrote:
> Hi Greg,
> 
> The 4.19 branch also needs this patch.

4.19.y is end-of-life, sorry (see the front page of kernel.org for the
current list.)

thanks,

greg k-h