On Tue, Sep 14, 2021 at 05:31:32PM -0600, Jane Chu wrote: > +static int pmem_dax_clear_poison(struct dax_device *dax_dev, pgoff_t pgoff, > + size_t nr_pages) > +{ > + unsigned int len = PFN_PHYS(nr_pages); > + sector_t sector = PFN_PHYS(pgoff) >> SECTOR_SHIFT; > + struct pmem_device *pmem = dax_get_private(dax_dev); > + phys_addr_t pmem_off = sector * 512 + pmem->data_offset; > + blk_status_t ret; > + > + if (!is_bad_pmem(&pmem->bb, sector, len)) > + return 0; > + > + ret = pmem_clear_poison(pmem, pmem_off, len); > + return (ret == BLK_STS_OK) ? 0 : -EIO; No need for the braces here (and I'd prefer a good old if anyway). Otherwise looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>