CVE-2023-52682 f2fs: fix to wait on block writeback for post_read case

In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix to wait on block writeback for post_read case

If inode is compressed, but not encrypted, it missed to call
f2fs_wait_on_block_writeback() to wait for GCed page writeback
in IPU write path.

Thread A GC-Thread
- f2fs_gc
- do_garbage_collect
- gc_data_segment
- move_data_block
- f2fs_submit_page_write
migrate normal cluster’s block via
meta_inode’s page cache

• f2fs_write_single_data_page
• f2fs_do_write_data_page
• f2fs_inplace_write_data
• f2fs_submit_page_bio

IRQ

• f2fs_read_end_io
  IRQ
  old data overrides new data due to
  out-of-order GC and common IO.
  - f2fs_read_end_io