f2fs: handle newly created page when revoking inmem pages

When committing inmem pages is successful, we revoke already committed
blocks in __revoke_inmem_pages() and finally replace the committed
ones with the old blocks using f2fs_replace_block(). However, if
the committed block was newly created one, the address of the old
block is NEW_ADDR and __f2fs_replace_block() cannot handle NEW_ADDR
as new_blkaddr properly and a kernel panic occurrs.

Signed-off-by: Daeho Jeong <daeho.jeong@samsung.com>
Tested-by: Shu Tan <shu.tan@samsung.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 35009db..2e8e054 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -248,7 +248,11 @@ retry:
                                goto next;
                        }
                        get_node_info(sbi, dn.nid, &ni);
-                       f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
+                       if (cur->old_addr == NEW_ADDR) {
+                               invalidate_blocks(sbi, dn.data_blkaddr);
+                               f2fs_update_data_blkaddr(&dn, NEW_ADDR);
+                       } else
+                               f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
                                        cur->old_addr, ni.version, true, true);
                        f2fs_put_dnode(&dn);
                }