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Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6-microblaze.git]
/
include
/
linux
/
dax.h
diff --git
a/include/linux/dax.h
b/include/linux/dax.h
index
deb0f66
..
450b28d
100644
(file)
--- a/
include/linux/dax.h
+++ b/
include/linux/dax.h
@@
-88,6
+88,8
@@
int dax_writeback_mapping_range(struct address_space *mapping,
struct block_device *bdev, struct writeback_control *wbc);
struct page *dax_layout_busy_page(struct address_space *mapping);
struct block_device *bdev, struct writeback_control *wbc);
struct page *dax_layout_busy_page(struct address_space *mapping);
+bool dax_lock_mapping_entry(struct page *page);
+void dax_unlock_mapping_entry(struct page *page);
#else
static inline bool bdev_dax_supported(struct block_device *bdev,
int blocksize)
#else
static inline bool bdev_dax_supported(struct block_device *bdev,
int blocksize)
@@
-119,6
+121,17
@@
static inline int dax_writeback_mapping_range(struct address_space *mapping,
{
return -EOPNOTSUPP;
}
{
return -EOPNOTSUPP;
}
+
+static inline bool dax_lock_mapping_entry(struct page *page)
+{
+ if (IS_DAX(page->mapping->host))
+ return true;
+ return false;
+}
+
+static inline void dax_unlock_mapping_entry(struct page *page)
+{
+}
#endif
int dax_read_lock(void);
#endif
int dax_read_lock(void);