On Tue, Aug 27, 2024 at 07:03:21AM +0200, Christoph Hellwig wrote: > COW writes remove the amount overwritten either directly for delalloc > reservations, or in earlier deferred transactions than adding the new > amount back in the bmap map transaction. This means st_blocks on an > inode where all data is overwritten using the COW path can temporarily > show a 0 st_blocks. This can easily be reproduced with the pending > zoned device support where all writes use this path and trips the > check in generic/615, but could also happen on a reflink file without > that. > > Fix this by temporarily add the pending blocks to be mapped to > i_delayed_blks while the item is queued. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx> Looks good to me. Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx> -- Dave Chinner david@xxxxxxxxxxxxx
