diff options
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 15 |
1 files changed, 7 insertions, 8 deletions
@@ -1037,18 +1037,18 @@ static vm_fault_t dax_load_hole(struct xa_state *xas, return ret; } -int dax_iomap_zero(loff_t pos, unsigned offset, unsigned size, - struct iomap *iomap) +s64 dax_iomap_zero(loff_t pos, u64 length, struct iomap *iomap) { sector_t sector = iomap_sector(iomap, pos & PAGE_MASK); pgoff_t pgoff; long rc, id; void *kaddr; bool page_aligned = false; - + unsigned offset = offset_in_page(pos); + unsigned size = min_t(u64, PAGE_SIZE - offset, length); if (IS_ALIGNED(sector << SECTOR_SHIFT, PAGE_SIZE) && - IS_ALIGNED(size, PAGE_SIZE)) + (size == PAGE_SIZE)) page_aligned = true; rc = bdev_dax_pgoff(iomap->bdev, sector, PAGE_SIZE, &pgoff); @@ -1058,8 +1058,7 @@ int dax_iomap_zero(loff_t pos, unsigned offset, unsigned size, id = dax_read_lock(); if (page_aligned) - rc = dax_zero_page_range(iomap->dax_dev, pgoff, - size >> PAGE_SHIFT); + rc = dax_zero_page_range(iomap->dax_dev, pgoff, 1); else rc = dax_direct_access(iomap->dax_dev, pgoff, 1, &kaddr, NULL); if (rc < 0) { @@ -1072,7 +1071,7 @@ int dax_iomap_zero(loff_t pos, unsigned offset, unsigned size, dax_flush(iomap->dax_dev, kaddr + offset, size); } dax_read_unlock(id); - return 0; + return size; } static loff_t @@ -1367,7 +1366,7 @@ static vm_fault_t dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp, ret = dax_load_hole(&xas, mapping, &entry, vmf); goto finish_iomap; } - /*FALLTHRU*/ + fallthrough; default: WARN_ON_ONCE(1); error = -EIO; |