jbd2,ocfs2: move jbd2_journal_submit_inode_data_buffers to ocfs2

jbd2_journal_submit_inode_data_buffers is only used by ocfs2, so move it
there to prepare for removing generic_writepages.

Link: https://lkml.kernel.org/r/20221229161031.391878-5-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

fs/jbd2/commit.c

@@ -177,31 +177,6 @@ static int journal_wait_on_commit_record(journal_t *journal,
 	return ret;
 }
 
-/*
- * write the filemap data using writepage() address_space_operations.
- * We don't do block allocation here even for delalloc. We don't
- * use writepages() because with delayed allocation we may be doing
- * block allocation in writepages().
- */
-int jbd2_journal_submit_inode_data_buffers(struct jbd2_inode *jinode)
-{
-	struct address_space *mapping = jinode->i_vfs_inode->i_mapping;
-	struct writeback_control wbc = {
-		.sync_mode =  WB_SYNC_ALL,
-		.nr_to_write = mapping->nrpages * 2,
-		.range_start = jinode->i_dirty_start,
-		.range_end = jinode->i_dirty_end,
-	};
-
-	/*
-	 * submit the inode data buffers. We use writepage
-	 * instead of writepages. Because writepages can do
-	 * block allocation with delalloc. We need to write
-	 * only allocated blocks here.
-	 */
-	return generic_writepages(mapping, &wbc);
-}
-
 /* Send all the data buffers related to an inode */
 int jbd2_submit_inode_data(journal_t *journal, struct jbd2_inode *jinode)
 {

fs/jbd2/journal.c

@@ -89,7 +89,6 @@ EXPORT_SYMBOL(jbd2_journal_try_to_free_buffers);
 EXPORT_SYMBOL(jbd2_journal_force_commit);
 EXPORT_SYMBOL(jbd2_journal_inode_ranged_write);
 EXPORT_SYMBOL(jbd2_journal_inode_ranged_wait);
-EXPORT_SYMBOL(jbd2_journal_submit_inode_data_buffers);
 EXPORT_SYMBOL(jbd2_journal_finish_inode_data_buffers);
 EXPORT_SYMBOL(jbd2_journal_init_jbd_inode);
 EXPORT_SYMBOL(jbd2_journal_release_jbd_inode);

fs/ocfs2/journal.c

@@ -15,6 +15,7 @@
 #include <linux/time.h>
 #include <linux/random.h>
 #include <linux/delay.h>
+#include <linux/writeback.h>
 
 #include <cluster/masklog.h>
 
@@ -841,6 +842,19 @@ bail:
 	return status;
 }
 
+static int ocfs2_journal_submit_inode_data_buffers(struct jbd2_inode *jinode)
+{
+	struct address_space *mapping = jinode->i_vfs_inode->i_mapping;
+	struct writeback_control wbc = {
+		.sync_mode =  WB_SYNC_ALL,
+		.nr_to_write = mapping->nrpages * 2,
+		.range_start = jinode->i_dirty_start,
+		.range_end = jinode->i_dirty_end,
+	};
+
+	return generic_writepages(mapping, &wbc);
+}
+
 int ocfs2_journal_init(struct ocfs2_super *osb, int *dirty)
 {
 	int status = -1;
@@ -910,7 +924,7 @@ int ocfs2_journal_init(struct ocfs2_super *osb, int *dirty)
 
 	journal->j_journal = j_journal;
 	journal->j_journal->j_submit_inode_data_buffers =
-		jbd2_journal_submit_inode_data_buffers;
+		ocfs2_journal_submit_inode_data_buffers;
 	journal->j_journal->j_finish_inode_data_buffers =
 		jbd2_journal_finish_inode_data_buffers;
 	journal->j_inode = inode;

include/linux/jbd2.h

@@ -1570,8 +1570,6 @@ extern int	   jbd2_journal_inode_ranged_write(handle_t *handle,
 extern int	   jbd2_journal_inode_ranged_wait(handle_t *handle,
 			struct jbd2_inode *inode, loff_t start_byte,
 			loff_t length);
-extern int	   jbd2_journal_submit_inode_data_buffers(
-			struct jbd2_inode *jinode);
 extern int	   jbd2_journal_finish_inode_data_buffers(
 			struct jbd2_inode *jinode);
 extern int	   jbd2_journal_begin_ordered_truncate(journal_t *journal,