f2fs: avoid to check PG_error flag

After below changes:
commit 14db0b3c ("fscrypt: stop using PG_error to track error status")
commit 98dc08ba ("fsverity: stop using PG_error to track error status")

There is no place in f2fs we will set PG_error flag in page, let's remove
other PG_error usage in f2fs, as a step towards freeing the PG_error flag
for other uses.

Cc: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/data.c

@@ -2701,7 +2701,6 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
 			goto out_writepage;
 
 		set_page_writeback(page);
-		ClearPageError(page);
 		f2fs_put_dnode(&dn);
 		if (fio->need_lock == LOCK_REQ)
 			f2fs_unlock_op(fio->sbi);
@@ -2737,7 +2736,6 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
 		goto out_writepage;
 
 	set_page_writeback(page);
-	ClearPageError(page);
 
 	if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR)
 		f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false);

fs/f2fs/gc.c

@@ -1364,7 +1364,6 @@ static int move_data_block(struct inode *inode, block_t bidx,
 		dec_page_count(fio.sbi, F2FS_DIRTY_META);
 
 	set_page_writeback(fio.encrypted_page);
-	ClearPageError(page);
 
 	fio.op = REQ_OP_WRITE;
 	fio.op_flags = REQ_SYNC;

fs/f2fs/inline.c

@@ -174,7 +174,6 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
 
 	/* write data page to try to make data consistent */
 	set_page_writeback(page);
-	ClearPageError(page);
 	fio.old_blkaddr = dn->data_blkaddr;
 	set_inode_flag(dn->inode, FI_HOT_DATA);
 	f2fs_outplace_write_data(dn, &fio);

fs/f2fs/node.c

@@ -1650,7 +1650,6 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted,
 	}
 
 	set_page_writeback(page);
-	ClearPageError(page);
 
 	fio.old_blkaddr = ni.blk_addr;
 	f2fs_do_write_node_page(nid, &fio);
@@ -2079,8 +2078,6 @@ int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
 		spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
 
 		f2fs_wait_on_page_writeback(page, NODE, true, false);
-		if (TestClearPageError(page))
-			ret = -EIO;
 
 		put_page(page);
 

fs/f2fs/segment.c

@@ -3422,7 +3422,6 @@ void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
 		fio.op_flags &= ~REQ_META;
 
 	set_page_writeback(page);
-	ClearPageError(page);
 	f2fs_submit_page_write(&fio);
 
 	stat_inc_meta_count(sbi, page->index);