Re: [PATCH 1/2] ocfs2: use jbd2_inode dirty range scoping

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Looks good to me.

On 2019/7/13 8:26 上午, 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@xxxxxxxxxxxxxxxxx>
Reviewed-by: Ross Zwisler <zwisler@xxxxxxxxxx>
Reviewed-by: Changwei Ge <chge@xxxxxxxxxxxxxxxxx>
---
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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