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[2/3] f2fs: flush bios to handle cp_error in put_super

Message ID 1454115158-81227-2-git-send-email-jaegeuk@kernel.org (mailing list archive)
State New, archived
Headers show

Commit Message

Jaegeuk Kim Jan. 30, 2016, 12:52 a.m. UTC 
Sometimes, if cp_error is set, there remains under-writeback pages, resulting in
kernel hang in put_super.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/super.c | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 9962021..aa2d3d9 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -582,6 +582,13 @@  static void f2fs_put_super(struct super_block *sb)
 	f2fs_leave_shrinker(sbi);
 	mutex_unlock(&sbi->umount_mutex);
 
+	/* our cp_error case, we can wait for any writeback page */
+	if (get_pages(sbi, F2FS_WRITEBACK)) {
+		f2fs_submit_merged_bio(sbi, DATA, WRITE);
+		f2fs_submit_merged_bio(sbi, NODE, WRITE);
+		f2fs_submit_merged_bio(sbi, META, WRITE);
+	}
+
 	iput(sbi->node_inode);
 	iput(sbi->meta_inode);