diff options
| author | Jane Chu <jane.chu@oracle.com> | 2022-05-13 15:10:58 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-05-16 13:35:56 -0700 |
| commit | e511c4a3d2a1f64aafc1f5df37a2ffcf7ef91b55 (patch) | |
| tree | eccb155ac340c8bd514ab14af30edfc48208b3bd /fs/dax.c | |
| parent | 5898b43af954b83c4a4ee4ab85c4dbafa395822a (diff) | |
dax: introduce DAX_RECOVERY_WRITE dax access mode
Up till now, dax_direct_access() is used implicitly for normal
access, but for the purpose of recovery write, dax range with
poison is requested. To make the interface clear, introduce
enum dax_access_mode {
DAX_ACCESS,
DAX_RECOVERY_WRITE,
}
where DAX_ACCESS is used for normal dax access, and
DAX_RECOVERY_WRITE is used for dax recovery write.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Vivek Goyal <vgoyal@redhat.com>
Link: https://lore.kernel.org/r/165247982851.52965.11024212198889762949.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -721,7 +721,8 @@ 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; @@ -1013,7 +1014,7 @@ 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; @@ -1122,7 +1123,7 @@ 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); @@ -1247,7 +1248,7 @@ 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 < 0) { ret = map_len; break; |