summaryrefslogtreecommitdiff
path: root/fs/dax.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/dax.c')
-rw-r--r--fs/dax.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/fs/dax.c b/fs/dax.c
index 95981591977a..6ee6f7e24f5a 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -44,6 +44,7 @@
/* The 'colour' (ie low bits) within a PMD of a page offset. */
#define PG_PMD_COLOUR ((PMD_SIZE >> PAGE_SHIFT) - 1)
+#define PG_PMD_NR (PMD_SIZE >> PAGE_SHIFT)
static wait_queue_head_t wait_table[DAX_WAIT_TABLE_ENTRIES];
@@ -375,8 +376,8 @@ restart:
* unmapped.
*/
if (pmd_downgrade && dax_is_zero_entry(entry))
- unmap_mapping_range(mapping,
- (index << PAGE_SHIFT) & PMD_MASK, PMD_SIZE, 0);
+ unmap_mapping_pages(mapping, index & ~PG_PMD_COLOUR,
+ PG_PMD_NR, false);
err = radix_tree_preload(
mapping_gfp_mask(mapping) & ~__GFP_HIGHMEM);
@@ -538,12 +539,10 @@ static void *dax_insert_mapping_entry(struct address_space *mapping,
if (dax_is_zero_entry(entry) && !(flags & RADIX_DAX_ZERO_PAGE)) {
/* we are replacing a zero page with block mapping */
if (dax_is_pmd_entry(entry))
- unmap_mapping_range(mapping,
- (vmf->pgoff << PAGE_SHIFT) & PMD_MASK,
- PMD_SIZE, 0);
+ unmap_mapping_pages(mapping, index & ~PG_PMD_COLOUR,
+ PG_PMD_NR, false);
else /* pte entry */
- unmap_mapping_range(mapping, vmf->pgoff << PAGE_SHIFT,
- PAGE_SIZE, 0);
+ unmap_mapping_pages(mapping, vmf->pgoff, 1, false);
}
spin_lock_irq(&mapping->tree_lock);
@@ -636,8 +635,8 @@ static void dax_mapping_entry_mkclean(struct address_space *mapping,
pmd = pmd_mkclean(pmd);
set_pmd_at(vma->vm_mm, address, pmdp, pmd);
unlock_pmd:
- spin_unlock(ptl);
#endif
+ spin_unlock(ptl);
} else {
if (pfn != pte_pfn(*ptep))
goto unlock_pte;
@@ -1269,12 +1268,6 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, pfn_t *pfnp,
}
#ifdef CONFIG_FS_DAX_PMD
-/*
- * The 'colour' (ie low bits) within a PMD of a page offset. This comes up
- * more often than one might expect in the below functions.
- */
-#define PG_PMD_COLOUR ((PMD_SIZE >> PAGE_SHIFT) - 1)
-
static int dax_pmd_load_hole(struct vm_fault *vmf, struct iomap *iomap,
void *entry)
{