[PATCH 5/7] ext4: Refactor out ext4_da_write_inline_data_begin()

[Julian Sun <sunjunchao2870@gmail.com>]

Refactor ext4_da_write_inline_data_begin() to simplify its
implementation by directly invoking ext4_generic_write_inline_data().

Signed-off-by: Julian Sun <sunjunchao2870@gmail.com>
---
 fs/ext4/inline.c | 74 ++----------------------------------------------
 1 file changed, 2 insertions(+), 72 deletions(-)

diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index 7eaa578e1021..5dd91524b2ca 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -979,78 +979,8 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping,
 				    struct folio **foliop,
 				    void **fsdata)
 {
-	int ret;
-	handle_t *handle;
-	struct folio *folio;
-	struct ext4_iloc iloc;
-	int retries = 0;
-
-	ret = ext4_get_inode_loc(inode, &iloc);
-	if (ret)
-		return ret;
-
-retry_journal:
-	handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
-	if (IS_ERR(handle)) {
-		ret = PTR_ERR(handle);
-		goto out;
-	}
-
-	ret = ext4_prepare_inline_data(handle, inode, pos + len);
-	if (ret && ret != -ENOSPC)
-		goto out_journal;
-
-	if (ret == -ENOSPC) {
-		ext4_journal_stop(handle);
-		ret = ext4_da_convert_inline_data_to_extent(mapping,
-							    inode,
-							    fsdata);
-		if (ret == -ENOSPC &&
-		    ext4_should_retry_alloc(inode->i_sb, &retries))
-			goto retry_journal;
-		goto out;
-	}
-
-	/*
-	 * We cannot recurse into the filesystem as the transaction
-	 * is already started.
-	 */
-	folio = __filemap_get_folio(mapping, 0, FGP_WRITEBEGIN | FGP_NOFS,
-					mapping_gfp_mask(mapping));
-	if (IS_ERR(folio)) {
-		ret = PTR_ERR(folio);
-		goto out_journal;
-	}
-
-	down_read(&EXT4_I(inode)->xattr_sem);
-	if (!ext4_has_inline_data(inode)) {
-		ret = 0;
-		goto out_release_page;
-	}
-
-	if (!folio_test_uptodate(folio)) {
-		ret = ext4_read_inline_folio(inode, folio);
-		if (ret < 0)
-			goto out_release_page;
-	}
-	ret = ext4_journal_get_write_access(handle, inode->i_sb, iloc.bh,
-					    EXT4_JTR_NONE);
-	if (ret)
-		goto out_release_page;
-
-	up_read(&EXT4_I(inode)->xattr_sem);
-	*foliop = folio;
-	brelse(iloc.bh);
-	return 1;
-out_release_page:
-	up_read(&EXT4_I(inode)->xattr_sem);
-	folio_unlock(folio);
-	folio_put(folio);
-out_journal:
-	ext4_journal_stop(handle);
-out:
-	brelse(iloc.bh);
-	return ret;
+	return ext4_generic_write_inline_data(mapping, inode, pos, len,
+					      foliop, fsdata, true);
 }
 
 #ifdef INLINE_DIR_DEBUG
-- 
2.39.5