From 17c19120eb7fa94d95013243a8cced8cc9e107e1 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Fri, 29 Jan 2016 08:57:59 -0800 Subject: [PATCH] f2fs: flush bios to handle cp_error in put_super Sometimes, if cp_error is set, there remains under-writeback pages, resulting in kernel hang in put_super. Signed-off-by: Jaegeuk Kim --- fs/f2fs/super.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 58d9a55..9445a34 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); -- 2.7.4