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Subject: Re: [Ocfs2-devel] [PATCH 1/2] ocfs2: use jbd2_inode dirty range
 scoping
From:   Joseph Qi <joseph.qi@linux.alibaba.com>
To:     akpm@linux-foundation.org
Cc:     Ross Zwisler <zwisler@google.com>, linux-ext4@vger.kernel.org,
        Theodore Ts'o <tytso@mit.edu>, ocfs2-devel@oss.oracle.com
References: <1562977611-8412-1-git-send-email-joseph.qi@linux.alibaba.com>
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Message-ID: <aa1380c2-01d2-1142-b712-9f7ff01d0b2d@linux.alibaba.com>
Date:   Thu, 18 Jul 2019 08:54:35 +0800
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Ping...
If something else should be updated, please let me know.

Thanks,
Joseph

On 19/7/16 19:15, Joseph Qi wrote:
> Hi Andrew,
> Could you please pick up these 2 patches?
> 
> Thanks,
> Joseph
> 
> On 19/7/13 08:26, Joseph Qi wrote:
>> commit 6ba0e7dc64a5 ("jbd2: introduce jbd2_inode dirty range scoping")
>> allow us scoping each of the inode dirty ranges associated with a given
>> transaction, and ext4 already does this way.
>> Now let's also use the newly introduced jbd2_inode dirty range scoping
>> to prevent us from waiting forever when trying to complete a journal
>> transaction in ocfs2.
>>
>> Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
>> Reviewed-by: Ross Zwisler <zwisler@google.com>
>> ---
>> v1 -> v2:
>>   rename ocfs2_jbd2_file_inode() to ocfs2_jbd2_inode_add_write() to keep
>>   consistent with ext4.
>>   wrap several long lines.
>>
>>  fs/ocfs2/alloc.c   |  5 ++++-
>>  fs/ocfs2/aops.c    | 13 ++++++++++---
>>  fs/ocfs2/file.c    | 10 +++++++---
>>  fs/ocfs2/journal.h | 11 +++++++----
>>  4 files changed, 28 insertions(+), 11 deletions(-)
>>
>> diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
>> index d1348fc..54f72ad 100644
>> --- a/fs/ocfs2/alloc.c
>> +++ b/fs/ocfs2/alloc.c
>> @@ -6792,6 +6792,8 @@ void ocfs2_map_and_dirty_page(struct inode *inode, handle_t *handle,
>>  			      struct page *page, int zero, u64 *phys)
>>  {
>>  	int ret, partial = 0;
>> +	loff_t start_byte = ((loff_t)page->index << PAGE_SHIFT) + from;
>> +	loff_t length = to - from;
>>  
>>  	ret = ocfs2_map_page_blocks(page, phys, inode, from, to, 0);
>>  	if (ret)
>> @@ -6811,7 +6813,8 @@ void ocfs2_map_and_dirty_page(struct inode *inode, handle_t *handle,
>>  	if (ret < 0)
>>  		mlog_errno(ret);
>>  	else if (ocfs2_should_order_data(inode)) {
>> -		ret = ocfs2_jbd2_file_inode(handle, inode);
>> +		ret = ocfs2_jbd2_inode_add_write(handle, inode,
>> +						 start_byte, length);
>>  		if (ret < 0)
>>  			mlog_errno(ret);
>>  	}
>> diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
>> index a4c905d..8de1c9d 100644
>> --- a/fs/ocfs2/aops.c
>> +++ b/fs/ocfs2/aops.c
>> @@ -942,7 +942,8 @@ static void ocfs2_write_failure(struct inode *inode,
>>  
>>  		if (tmppage && page_has_buffers(tmppage)) {
>>  			if (ocfs2_should_order_data(inode))
>> -				ocfs2_jbd2_file_inode(wc->w_handle, inode);
>> +				ocfs2_jbd2_inode_add_write(wc->w_handle, inode,
>> +							   user_pos, user_len);
>>  
>>  			block_commit_write(tmppage, from, to);
>>  		}
>> @@ -2023,8 +2024,14 @@ int ocfs2_write_end_nolock(struct address_space *mapping,
>>  		}
>>  
>>  		if (page_has_buffers(tmppage)) {
>> -			if (handle && ocfs2_should_order_data(inode))
>> -				ocfs2_jbd2_file_inode(handle, inode);
>> +			if (handle && ocfs2_should_order_data(inode)) {
>> +				loff_t start_byte =
>> +					((loff_t)tmppage->index << PAGE_SHIFT) +
>> +					from;
>> +				loff_t length = to - from;
>> +				ocfs2_jbd2_inode_add_write(handle, inode,
>> +							   start_byte, length);
>> +			}
>>  			block_commit_write(tmppage, from, to);
>>  		}
>>  	}
>> diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
>> index 4435df3..efe9988 100644
>> --- a/fs/ocfs2/file.c
>> +++ b/fs/ocfs2/file.c
>> @@ -706,7 +706,9 @@ static int ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
>>   * Thus, we need to explicitly order the zeroed pages.
>>   */
>>  static handle_t *ocfs2_zero_start_ordered_transaction(struct inode *inode,
>> -						struct buffer_head *di_bh)
>> +						      struct buffer_head *di_bh,
>> +						      loff_t start_byte,
>> +						      loff_t length)
>>  {
>>  	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
>>  	handle_t *handle = NULL;
>> @@ -722,7 +724,7 @@ static handle_t *ocfs2_zero_start_ordered_transaction(struct inode *inode,
>>  		goto out;
>>  	}
>>  
>> -	ret = ocfs2_jbd2_file_inode(handle, inode);
>> +	ret = ocfs2_jbd2_inode_add_write(handle, inode, start_byte, length);
>>  	if (ret < 0) {
>>  		mlog_errno(ret);
>>  		goto out;
>> @@ -761,7 +763,9 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
>>  	BUG_ON(abs_to > (((u64)index + 1) << PAGE_SHIFT));
>>  	BUG_ON(abs_from & (inode->i_blkbits - 1));
>>  
>> -	handle = ocfs2_zero_start_ordered_transaction(inode, di_bh);
>> +	handle = ocfs2_zero_start_ordered_transaction(inode, di_bh,
>> +						      abs_from,
>> +						      abs_to - abs_from);
>>  	if (IS_ERR(handle)) {
>>  		ret = PTR_ERR(handle);
>>  		goto out;
>> diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
>> index c0fe6ed..f37473c 100644
>> --- a/fs/ocfs2/journal.h
>> +++ b/fs/ocfs2/journal.h
>> @@ -232,8 +232,8 @@ static inline void ocfs2_checkpoint_inode(struct inode *inode)
>>   *                          ocfs2_journal_access_*() unless you intend to
>>   *                          manage the checksum by hand.
>>   *  ocfs2_journal_dirty    - Mark a journalled buffer as having dirty data.
>> - *  ocfs2_jbd2_file_inode  - Mark an inode so that its data goes out before
>> - *                           the current handle commits.
>> + *  ocfs2_jbd2_inode_add_write  - Mark an inode with range so that its data goes
>> + *                                out before the current handle commits.
>>   */
>>  
>>  /* You must always start_trans with a number of buffs > 0, but it's
>> @@ -603,9 +603,12 @@ static inline int ocfs2_calc_tree_trunc_credits(struct super_block *sb,
>>  	return credits;
>>  }
>>  
>> -static inline int ocfs2_jbd2_file_inode(handle_t *handle, struct inode *inode)
>> +static inline int ocfs2_jbd2_inode_add_write(handle_t *handle, struct inode *inode,
>> +					     loff_t start_byte, loff_t length)
>>  {
>> -	return jbd2_journal_inode_add_write(handle, &OCFS2_I(inode)->ip_jinode);
>> +	return jbd2_journal_inode_ranged_write(handle,
>> +					       &OCFS2_I(inode)->ip_jinode,
>> +					       start_byte, length);
>>  }
>>  
>>  static inline int ocfs2_begin_ordered_truncate(struct inode *inode,
>>
> 
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