f2fs: clean up commit_inmem_pages()

This patch moves error handling from commit_inmem_pages() into
__commit_inmem_page() for cleanup, no logic change.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 7843089..1dc7a3d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -343,8 +343,7 @@
 	trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE);
 }
 
-static int __commit_inmem_pages(struct inode *inode,
-					struct list_head *revoke_list)
+static int __commit_inmem_pages(struct inode *inode)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	struct f2fs_inode_info *fi = F2FS_I(inode);
@@ -357,9 +356,12 @@
 		.op_flags = REQ_SYNC | REQ_PRIO,
 		.io_type = FS_DATA_IO,
 	};
+	struct list_head revoke_list;
 	pgoff_t last_idx = ULONG_MAX;
 	int err = 0;
 
+	INIT_LIST_HEAD(&revoke_list);
+
 	list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
 		struct page *page = cur->page;
 
@@ -393,35 +395,13 @@
 			last_idx = page->index;
 		}
 		unlock_page(page);
-		list_move_tail(&cur->list, revoke_list);
+		list_move_tail(&cur->list, &revoke_list);
 	}
 
 	if (last_idx != ULONG_MAX)
 		f2fs_submit_merged_write_cond(sbi, inode, 0, last_idx, DATA);
 
-	if (!err)
-		__revoke_inmem_pages(inode, revoke_list, false, false);
-
-	return err;
-}
-
-int commit_inmem_pages(struct inode *inode)
-{
-	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
-	struct f2fs_inode_info *fi = F2FS_I(inode);
-	struct list_head revoke_list;
-	int err;
-
-	INIT_LIST_HEAD(&revoke_list);
-	f2fs_balance_fs(sbi, true);
-	f2fs_lock_op(sbi);
-
-	set_inode_flag(inode, FI_ATOMIC_COMMIT);
-
-	mutex_lock(&fi->inmem_lock);
-	err = __commit_inmem_pages(inode, &revoke_list);
 	if (err) {
-		int ret;
 		/*
 		 * try to revoke all committed pages, but still we could fail
 		 * due to no memory or other reason, if that happened, EAGAIN
@@ -430,13 +410,31 @@
 		 * recovery or rewrite & commit last transaction. For other
 		 * error number, revoking was done by filesystem itself.
 		 */
-		ret = __revoke_inmem_pages(inode, &revoke_list, false, true);
-		if (ret)
-			err = ret;
+		err = __revoke_inmem_pages(inode, &revoke_list, false, true);
 
 		/* drop all uncommitted pages */
 		__revoke_inmem_pages(inode, &fi->inmem_pages, true, false);
+	} else {
+		__revoke_inmem_pages(inode, &revoke_list, false, false);
 	}
+
+	return err;
+}
+
+int commit_inmem_pages(struct inode *inode)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+	struct f2fs_inode_info *fi = F2FS_I(inode);
+	int err;
+
+	f2fs_balance_fs(sbi, true);
+	f2fs_lock_op(sbi);
+
+	set_inode_flag(inode, FI_ATOMIC_COMMIT);
+
+	mutex_lock(&fi->inmem_lock);
+	err = __commit_inmem_pages(inode);
+
 	spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
 	if (!list_empty(&fi->inmem_ilist))
 		list_del_init(&fi->inmem_ilist);