Merge branches 'clk-range', 'clk-uniphier', 'clk-apple' and 'clk-qcom' into clk-next

[linux-2.6-microblaze.git] / include / linux / netfs.h

diff --git a/include/linux/netfs.h b/include/linux/netfs.h
index b46c39d..614f222 100644 (file)
--- a/include/linux/netfs.h
+++ b/include/linux/netfs.h
@@ -244,6 +244,13 @@ struct netfs_cache_ops {
        int (*prepare_write)(struct netfs_cache_resources *cres,
                             loff_t *_start, size_t *_len, loff_t i_size,
                             bool no_space_allocated_yet);
+
+       /* Query the occupancy of the cache in a region, returning where the
+        * next chunk of data starts and how long it is.
+        */
+       int (*query_occupancy)(struct netfs_cache_resources *cres,
+                              loff_t start, size_t len, size_t granularity,
+                              loff_t *_data_start, size_t *_data_len);
 };
 
 struct readahead_control;