diff options
| -rw-r--r-- | fs/buffer.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index 9af5f061a1f8..daaa6614a6d6 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1123,12 +1123,18 @@ EXPORT_SYMBOL(mark_buffer_dirty); void mark_buffer_write_io_error(struct buffer_head *bh) { + struct mapping_metadata_bhs *mmb; + set_buffer_write_io_error(bh); /* FIXME: do we need to set this in both places? */ if (bh->b_folio && bh->b_folio->mapping) mapping_set_error(bh->b_folio->mapping, -EIO); - if (bh->b_mmb) - mapping_set_error(bh->b_mmb->mapping, -EIO); + /* Protect us from mmb & inode getting freed while we work on it */ + rcu_read_lock(); + mmb = READ_ONCE(bh->b_mmb); + if (mmb) + mapping_set_error(mmb->mapping, -EIO); + rcu_read_unlock(); } EXPORT_SYMBOL(mark_buffer_write_io_error); |