[PATCH 4/7] f2fs: report unwritten status in fsync_node_pages

[Jaegeuk Kim]

The fsync_node_pages should return pass or failure so that user could know
fsync is completed or not.

Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/file.c |  4 +++-
 fs/f2fs/node.c | 13 ++++++-------
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 3d53ee0..60fd64c 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -256,7 +256,9 @@ go_write:
                goto out;
        }
 sync_nodes:
-       fsync_node_pages(sbi, ino, &wbc);
+       ret = fsync_node_pages(sbi, ino, &wbc);
+       if (ret)
+               goto out;
 
        /* if cp_error was enabled, we should avoid infinite loop */
        if (unlikely(f2fs_cp_error(sbi))) {
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 675b730..8a1e211 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1227,7 +1227,7 @@ int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
 {
        pgoff_t index, end;
        struct pagevec pvec;
-       int nwritten = 0;
+       int ret = 0;
 
        pagevec_init(&pvec, 0);
        index = 0;
@@ -1278,21 +1278,20 @@ continue_unlock:
                        if (IS_INODE(page))
                                set_dentry_mark(page,
                                                need_dentry_mark(sbi, ino));
-                       nwritten++;
 
-                       if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc))
+                       ret = NODE_MAPPING(sbi)->a_ops->writepage(page, wbc);
+                       if (ret) {
                                unlock_page(page);
-
-                       if (--wbc->nr_to_write == 0)
                                break;
+                       }
                }
                pagevec_release(&pvec);
                cond_resched();
 
-               if (wbc->nr_to_write == 0)
+               if (ret)
                        break;
        }
-       return nwritten;
+       return ret ? -EIO: 0;
 }
 
 int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc)
-- 
2.6.3