linux-ext4 - [PATCH v4 09/13] jbd2: Switch jbd2_submit_inode_data() to use fs-provided hook for data writeout

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Date:   Wed,  7 Dec 2022 12:27:12 +0100
From:   Jan Kara <jack@...e.cz>
To:     Ted Tso <tytso@....edu>
Cc:     <linux-ext4@...r.kernel.org>,
        Christoph Hellwig <hch@...radead.org>,
        "Ritesh Harjani (IBM)" <ritesh.list@...il.com>,
        Jan Kara <jack@...e.cz>
Subject: [PATCH v4 09/13] jbd2: Switch jbd2_submit_inode_data() to use fs-provided hook for data writeout

jbd2_submit_inode_data() hardcoded use of
jbd2_journal_submit_inode_data_buffers() for submission of data pages.
Make it use j_submit_inode_data_buffers hook instead. This effectively
switches ext4 fastcommits to use ext4_writepages() for data writeout
instead of generic_writepages().

Signed-off-by: Jan Kara <jack@...e.cz>
---
 fs/ext4/fast_commit.c | 2 +-
 fs/jbd2/commit.c      | 5 ++---
 include/linux/jbd2.h  | 2 +-
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
index 0f6d0a80467d..7c6694593497 100644
--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -986,7 +986,7 @@ static int ext4_fc_submit_inode_data_all(journal_t *journal)
 			finish_wait(&ei->i_fc_wait, &wait);
 		}
 		spin_unlock(&sbi->s_fc_lock);
-		ret = jbd2_submit_inode_data(ei->jinode);
+		ret = jbd2_submit_inode_data(journal, ei->jinode);
 		if (ret)
 			return ret;
 		spin_lock(&sbi->s_fc_lock);
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 885a7a6cc53e..4810438b7856 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -207,14 +207,13 @@ int jbd2_journal_submit_inode_data_buffers(struct jbd2_inode *jinode)
 }
 
 /* Send all the data buffers related to an inode */
-int jbd2_submit_inode_data(struct jbd2_inode *jinode)
+int jbd2_submit_inode_data(journal_t *journal, struct jbd2_inode *jinode)
 {
-
 	if (!jinode || !(jinode->i_flags & JI_WRITE_DATA))
 		return 0;
 
 	trace_jbd2_submit_inode_data(jinode->i_vfs_inode);
-	return jbd2_journal_submit_inode_data_buffers(jinode);
+	return journal->j_submit_inode_data_buffers(jinode);
 
 }
 EXPORT_SYMBOL(jbd2_submit_inode_data);
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 0b7242370b56..2170e0cc279d 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -1662,7 +1662,7 @@ int jbd2_fc_begin_commit(journal_t *journal, tid_t tid);
 int jbd2_fc_end_commit(journal_t *journal);
 int jbd2_fc_end_commit_fallback(journal_t *journal);
 int jbd2_fc_get_buf(journal_t *journal, struct buffer_head **bh_out);
-int jbd2_submit_inode_data(struct jbd2_inode *jinode);
+int jbd2_submit_inode_data(journal_t *journal, struct jbd2_inode *jinode);
 int jbd2_wait_inode_data(journal_t *journal, struct jbd2_inode *jinode);
 int jbd2_fc_wait_bufs(journal_t *journal, int num_blks);
 int jbd2_fc_release_bufs(journal_t *journal);
-- 
2.35.3