One inode may be evicted without removing from global dirty list,
which will cause endless loop in funtion f2fs_sync_inode_meta.

Signed-off-by: Yunlei He <[email protected]>
---
 fs/f2fs/inode.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 9684d535..ce1f87d 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -532,6 +532,13 @@ void f2fs_evict_inode(struct inode *inode)
 
        if (err)
                update_inode_page(inode);
+
+       if (unlikely(is_inode_flag_set(inode, FI_DIRTY_INODE))) {
+               f2fs_inode_synced(inode);
+               f2fs_msg(sbi->sb, KERN_WARNING, "correct inode status to avoid "
+                               "endless loop, since inode writeback flow is 
broken");
+               f2fs_bug_on(sbi, 1);
+       }
        dquot_free_inode(inode);
        sb_end_intwrite(inode->i_sb);
 no_delete:
@@ -541,6 +548,19 @@ void f2fs_evict_inode(struct inode *inode)
        stat_dec_inline_dir(inode);
        stat_dec_inline_inode(inode);
 
+       if (unlikely(is_inode_flag_set(inode, FI_DIRTY_INODE))) {
+               sb_start_intwrite(inode->i_sb);
+               update_inode_page(inode);
+               if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
+                       f2fs_inode_synced(inode);
+                       f2fs_msg(sbi->sb, KERN_WARNING,
+                               "inode info is inconsistent since "
+                               "inode evicts before we writeback it");
+               }
+               sb_end_intwrite(inode->i_sb);
+               f2fs_bug_on(sbi, 1);
+       }
+
        if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG)))
                f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
        else
-- 
1.9.1


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