From: Jeff Layton <jlayton@xxxxxxxxxx> When syncing out a block device (a'la __sync_blockdev), any error encountered will only be recorded in the bd_inode's mapping. When the blockdev contains a filesystem however, we'd like to also record the error in the super_block that's stored there. Change mark_buffer_write_io_error to record the error in the corresponding super_block when a writeback error occurs and the block device contains a mounted superblock. Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx> --- fs/buffer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/buffer.c b/fs/buffer.c index 249b83fafe48..dae2a857d5bc 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1117,6 +1117,8 @@ void mark_buffer_write_io_error(struct buffer_head *bh) mapping_set_error(bh->b_page->mapping, -EIO); if (bh->b_assoc_map) mapping_set_error(bh->b_assoc_map, -EIO); + if (bh->b_bdev->bd_super) + errseq_set(&bh->b_bdev->bd_super->s_wb_err, -EIO); } EXPORT_SYMBOL(mark_buffer_write_io_error); -- 2.17.0
