From: Matthew Wilcox <mawil...@microsoft.com>
Remove the address_space ->tree_lock and use the xa_lock newly added to
the radix_tree_root. Rename the address_space ->page_tree to ->i_pages,
since we don't really care that it's a tree.
Signed-off-by: Matthew Wilcox <mawil...@microsoft.com>
Acked-by: Jeff Layton <jlay...@redhat.com>
Reviewed-by: Josef Bacik <jba...@fb.com>
---
arch/nds32/include/asm/cacheflush.h | 4 ++--
fs/dax.c | 6 +++---
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/nds32/include/asm/cacheflush.h
b/arch/nds32/include/asm/cacheflush.h
index 7b9b20a381cb..1240f148ec0f 100644
--- a/arch/nds32/include/asm/cacheflush.h
+++ b/arch/nds32/include/asm/cacheflush.h
@@ -34,8 +34,8 @@ void flush_anon_page(struct vm_area_struct *vma,
void flush_kernel_dcache_page(struct page *page);
void flush_icache_range(unsigned long start, unsigned long end);
void flush_icache_page(struct vm_area_struct *vma, struct page *page);
-#define flush_dcache_mmap_lock(mapping) spin_lock_irq(&(mapping)->tree_lock)
-#define flush_dcache_mmap_unlock(mapping)
spin_unlock_irq(&(mapping)->tree_lock)
+#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&(mapping)->i_pages)
+#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&(mapping)->i_pages)
#else
#include <asm-generic/cacheflush.h>
diff --git a/fs/dax.c b/fs/dax.c
index eeedecc8367b..9dc7337ef571 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -584,7 +584,7 @@ static int __dax_invalidate_mapping_entry(struct
address_space *mapping,
void *entry;
struct radix_tree_root *pages = &mapping->i_pages;
- xa_lock_irq(&mapping->i_pages);
+ xa_lock_irq(pages);
entry = get_unlocked_mapping_entry(mapping, index, NULL);
if (!entry || WARN_ON_ONCE(!radix_tree_exceptional_entry(entry)))
goto out;
@@ -598,7 +598,7 @@ static int __dax_invalidate_mapping_entry(struct
address_space *mapping,
ret = 1;
out:
put_unlocked_mapping_entry(mapping, index, entry);
- xa_unlock_irq(&mapping->i_pages);
+ xa_unlock_irq(pages);
return ret;
}
/*
@@ -685,7 +685,7 @@ static void *dax_insert_mapping_entry(struct address_space
*mapping,
unmap_mapping_pages(mapping, vmf->pgoff, 1, false);
}
- xa_lock_irq(&mapping->i_pages);
+ xa_lock_irq(pages);
new_entry = dax_radix_locked_entry(pfn, flags);
if (dax_entry_size(entry) != dax_entry_size(new_entry)) {
dax_disassociate_entry(entry, mapping, false);
--
2.16.2
------------------------------------------------------------------------------
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