ubifs: Fix wrong orphan node deletion in ubifs_jnl_update|rename

There a wrong orphan node deleting in error handling path in
ubifs_jnl_update() and ubifs_jnl_rename(), which may cause
following error msg:

  UBIFS error (ubi0:0 pid 1522): ubifs_delete_orphan [ubifs]:
  missing orphan ino 65

Fix this by checking whether the node has been operated for
adding to orphan list before being deleted,

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Fixes: 823838a486888cf484e ("ubifs: Add hashes to the tree node cache")
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index e5ec1af..2cf05f8 100644 (file)
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -539,7 +539,7 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
                     const struct fscrypt_name *nm, const struct inode *inode,
                     int deletion, int xent)
 {
-       int err, dlen, ilen, len, lnum, ino_offs, dent_offs;
+       int err, dlen, ilen, len, lnum, ino_offs, dent_offs, orphan_added = 0;
        int aligned_dlen, aligned_ilen, sync = IS_DIRSYNC(dir);
        int last_reference = !!(deletion && inode->i_nlink == 0);
        struct ubifs_inode *ui = ubifs_inode(inode);
@@ -630,6 +630,7 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
                        goto out_finish;
                }
                ui->del_cmtno = c->cmt_no;
+               orphan_added = 1;
        }
 
        err = write_head(c, BASEHD, dent, len, &lnum, &dent_offs, sync);
@@ -702,7 +703,7 @@ out_release:
        kfree(dent);
 out_ro:
        ubifs_ro_mode(c, err);
-       if (last_reference)
+       if (orphan_added)
                ubifs_delete_orphan(c, inode->i_ino);
        finish_reservation(c);
        return err;
@@ -1218,7 +1219,7 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
        void *p;
        union ubifs_key key;
        struct ubifs_dent_node *dent, *dent2;
-       int err, dlen1, dlen2, ilen, lnum, offs, len;
+       int err, dlen1, dlen2, ilen, lnum, offs, len, orphan_added = 0;
        int aligned_dlen1, aligned_dlen2, plen = UBIFS_INO_NODE_SZ;
        int last_reference = !!(new_inode && new_inode->i_nlink == 0);
        int move = (old_dir != new_dir);
@@ -1334,6 +1335,7 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
                        goto out_finish;
                }
                new_ui->del_cmtno = c->cmt_no;
+               orphan_added = 1;
        }
 
        err = write_head(c, BASEHD, dent, len, &lnum, &offs, sync);
@@ -1415,7 +1417,7 @@ out_release:
        release_head(c, BASEHD);
 out_ro:
        ubifs_ro_mode(c, err);
-       if (last_reference)
+       if (orphan_added)
                ubifs_delete_orphan(c, new_inode->i_ino);
 out_finish:
        finish_reservation(c);