diff options
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 22 |
1 files changed, 17 insertions, 5 deletions
@@ -722,7 +722,8 @@ static int copy_cow_page_dax(struct vm_fault *vmf, const struct iomap_iter *iter int id; id = dax_read_lock(); - rc = dax_direct_access(iter->iomap.dax_dev, pgoff, 1, &kaddr, NULL); + rc = dax_direct_access(iter->iomap.dax_dev, pgoff, 1, DAX_ACCESS, + &kaddr, NULL); if (rc < 0) { dax_read_unlock(id); return rc; @@ -939,7 +940,7 @@ static int dax_iomap_pfn(const struct iomap *iomap, loff_t pos, size_t size, id = dax_read_lock(); length = dax_direct_access(iomap->dax_dev, pgoff, PHYS_PFN(size), - NULL, pfnp); + DAX_ACCESS, NULL, pfnp); if (length < 0) { rc = length; goto out; @@ -1048,7 +1049,7 @@ static int dax_memzero(struct dax_device *dax_dev, pgoff_t pgoff, void *kaddr; long ret; - ret = dax_direct_access(dax_dev, pgoff, 1, &kaddr, NULL); + ret = dax_direct_access(dax_dev, pgoff, 1, DAX_ACCESS, &kaddr, NULL); if (ret > 0) { memset(kaddr + offset, 0, size); dax_flush(dax_dev, kaddr + offset, size); @@ -1165,6 +1166,7 @@ static loff_t dax_iomap_iter(const struct iomap_iter *iomi, const size_t size = ALIGN(length + offset, PAGE_SIZE); pgoff_t pgoff = dax_iomap_pgoff(iomap, pos); ssize_t map_len; + bool recovery = false; void *kaddr; if (fatal_signal_pending(current)) { @@ -1173,7 +1175,14 @@ static loff_t dax_iomap_iter(const struct iomap_iter *iomi, } map_len = dax_direct_access(dax_dev, pgoff, PHYS_PFN(size), - &kaddr, NULL); + DAX_ACCESS, &kaddr, NULL); + if (map_len == -EIO && iov_iter_rw(iter) == WRITE) { + map_len = dax_direct_access(dax_dev, pgoff, + PHYS_PFN(size), DAX_RECOVERY_WRITE, + &kaddr, NULL); + if (map_len > 0) + recovery = true; + } if (map_len < 0) { ret = map_len; break; @@ -1185,7 +1194,10 @@ static loff_t dax_iomap_iter(const struct iomap_iter *iomi, if (map_len > end - pos) map_len = end - pos; - if (iov_iter_rw(iter) == WRITE) + if (recovery) + xfer = dax_recovery_write(dax_dev, pgoff, kaddr, + map_len, iter); + else if (iov_iter_rw(iter) == WRITE) xfer = dax_copy_from_iter(dax_dev, pgoff, kaddr, map_len, iter); else |