1 files changed, 24 insertions, 3 deletions

diff --git a/include/linux/fscache.h b/include/linux/fscache.h
index ec0dad5ab90f..9ec20dec3353 100644
--- a/include/linux/fscache.h
+++ b/include/linux/fscache.h
@@ -102,9 +102,9 @@ struct fscache_cookie_def {
          */
         void (*get_attr)(const void *cookie_netfs_data, uint64_t *size);
 
-        /* get the auxilliary data from netfs data
+        /* get the auxiliary data from netfs data
          * - this function can be absent if the index carries no state data
-         * - should store the auxilliary data in the buffer
+         * - should store the auxiliary data in the buffer
          * - should return the amount of amount stored
          * - not permitted to return an error
          * - the netfs data from the cookie being used as the source is
@@ -117,7 +117,7 @@ struct fscache_cookie_def {
         /* consult the netfs about the state of an object
          * - this function can be absent if the index carries no state data
          * - the netfs data from the cookie being used as the target is
-         *   presented, as is the auxilliary data
+         *   presented, as is the auxiliary data
          */
         enum fscache_checkaux (*check_aux)(void *cookie_netfs_data,
                                            const void *data,
@@ -204,6 +204,8 @@ extern bool __fscache_check_page_write(struct fscache_cookie *, struct page *);
 extern void __fscache_wait_on_page_write(struct fscache_cookie *, struct page *);
 extern bool __fscache_maybe_release_page(struct fscache_cookie *, struct page *,
                                          gfp_t);
+extern void __fscache_uncache_all_inode_pages(struct fscache_cookie *,
+                                              struct inode *);
 
 /**
  * fscache_register_netfs - Register a filesystem as desiring caching services
@@ -643,4 +645,23 @@ bool fscache_maybe_release_page(struct fscache_cookie *cookie,
         return false;
 }
 
+/**
+ * fscache_uncache_all_inode_pages - Uncache all an inode's pages
+ * @cookie: The cookie representing the inode's cache object.
+ * @inode: The inode to uncache pages from.
+ *
+ * Uncache all the pages in an inode that are marked PG_fscache, assuming them
+ * to be associated with the given cookie.
+ *
+ * This function may sleep.  It will wait for pages that are being written out
+ * and will wait whilst the PG_fscache mark is removed by the cache.
+ */
+static inline
+void fscache_uncache_all_inode_pages(struct fscache_cookie *cookie,
+                                     struct inode *inode)
+{
+        if (fscache_cookie_valid(cookie))
+                __fscache_uncache_all_inode_pages(cookie, inode);
+}
+
 #endif /* _LINUX_FSCACHE_H */