[PATCH v6 62/99] dax: Convert dax_insert_pfn_mkwrite to XArray

From: Matthew Wilcox
Date: Wed Jan 17 2018 - 15:42:03 EST


From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>

Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
---
fs/dax.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/dax.c b/fs/dax.c
index b66b8c896ed8..e6b25ef112f2 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1497,21 +1497,21 @@ static int dax_insert_pfn_mkwrite(struct vm_fault *vmf,
void *entry;
int vmf_ret, error;

- xa_lock_irq(&mapping->pages);
+ xas_lock_irq(&xas);
entry = get_unlocked_mapping_entry(&xas);
/* Did we race with someone splitting entry or so? */
if (!entry ||
(pe_size == PE_SIZE_PTE && !dax_is_pte_entry(entry)) ||
(pe_size == PE_SIZE_PMD && !dax_is_pmd_entry(entry))) {
put_unlocked_mapping_entry(&xas, entry);
- xa_unlock_irq(&mapping->pages);
+ xas_unlock_irq(&xas);
trace_dax_insert_pfn_mkwrite_no_entry(mapping->host, vmf,
VM_FAULT_NOPAGE);
return VM_FAULT_NOPAGE;
}
- radix_tree_tag_set(&mapping->pages, index, PAGECACHE_TAG_DIRTY);
+ xas_set_tag(&xas, PAGECACHE_TAG_DIRTY);
entry = lock_slot(&xas);
- xa_unlock_irq(&mapping->pages);
+ xas_unlock_irq(&xas);
switch (pe_size) {
case PE_SIZE_PTE:
error = vm_insert_mixed_mkwrite(vmf->vma, vmf->address, pfn);
--
2.15.1