diff options
| -rw-r--r-- | fs/dax.c | 9 |
1 files changed, 4 insertions, 5 deletions
@@ -720,12 +720,11 @@ static void *dax_insert_entry(struct xa_state *xas, xas_reset(xas); xas_lock_irq(xas); - if (dax_entry_size(entry) != dax_entry_size(new_entry)) { + if (dax_is_zero_entry(entry) || dax_is_empty_entry(entry)) { + void *old; + dax_disassociate_entry(entry, mapping, false); dax_associate_entry(new_entry, mapping, vmf->vma, vmf->address); - } - - if (dax_is_zero_entry(entry) || dax_is_empty_entry(entry)) { /* * Only swap our new entry into the page cache if the current * entry is a zero page or an empty entry. If a normal PTE or @@ -734,7 +733,7 @@ static void *dax_insert_entry(struct xa_state *xas, * existing entry is a PMD, we will just leave the PMD in the * tree and dirty it if necessary. */ - void *old = dax_lock_entry(xas, new_entry); + old = dax_lock_entry(xas, new_entry); WARN_ON_ONCE(old != xa_mk_value(xa_to_value(entry) | DAX_LOCKED)); entry = new_entry; |