f2fs: avoid inifinite loop to wait for flushing node pages at cp_error

Shutdown test is somtimes hung, since it keeps trying to flush dirty node pages
in an inifinite loop. Let's drop dirty pages at umount in that case.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index e632de1..e0bb0f7 100644 (file)
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1520,8 +1520,15 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted,
 
        trace_f2fs_writepage(page, NODE);
 
-       if (unlikely(f2fs_cp_error(sbi)))
+       if (unlikely(f2fs_cp_error(sbi))) {
+               if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) {
+                       ClearPageUptodate(page);
+                       dec_page_count(sbi, F2FS_DIRTY_NODES);
+                       unlock_page(page);
+                       return 0;
+               }
                goto redirty_out;
+       }
 
        if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
                goto redirty_out;