[S390] clear_table inline assembly contraints

[safe/jmp/linux-2.6] / fs / ubifs / misc.h

diff --git a/fs/ubifs/misc.h b/fs/ubifs/misc.h
index 87ced4c..4fa81d8 100644 (file)
--- a/fs/ubifs/misc.h
+++ b/fs/ubifs/misc.h
@@ -284,38 +284,6 @@ static inline void *ubifs_idx_key(const struct ubifs_info *c,
 }
 
 /**
- * ubifs_reported_space - calculate reported free space.
- * @c: the UBIFS file-system description object
- * @free: amount of free space
- *
- * This function calculates amount of free space which will be reported to
- * user-space. User-space application tend to expect that if the file-system
- * (e.g., via the 'statfs()' call) reports that it has N bytes available, they
- * are able to write a file of size N. UBIFS attaches node headers to each data
- * node and it has to write indexind nodes as well. This introduces additional
- * overhead, and UBIFS it has to report sligtly less free space to meet the
- * above expectetion.
- *
- * This function assumes free space is made up of uncompressed data nodes and
- * full index nodes (one per data node, doubled because we always allow enough
- * space to write the index twice).
- *
- * Note, the calculation is pessimistic, which means that most of the time
- * UBIFS reports less space than it actually has.
- */
-static inline long long ubifs_reported_space(const struct ubifs_info *c,
-                                            uint64_t free)
-{
-       int divisor, factor;
-
-       divisor = UBIFS_MAX_DATA_NODE_SZ + (c->max_idx_node_sz * 3);
-       factor = UBIFS_MAX_DATA_NODE_SZ - UBIFS_DATA_NODE_SZ;
-       do_div(free, divisor);
-
-       return free * factor;
-}
-
-/**
  * ubifs_current_time - round current time to time granularity.
  * @inode: inode
  */
@@ -342,4 +310,31 @@ static inline int ubifs_tnc_lookup(struct ubifs_info *c,
        return ubifs_tnc_locate(c, key, node, NULL, NULL);
 }
 
+/**
+ * ubifs_get_lprops - get reference to LEB properties.
+ * @c: the UBIFS file-system description object
+ *
+ * This function locks lprops. Lprops have to be unlocked by
+ * 'ubifs_release_lprops()'.
+ */
+static inline void ubifs_get_lprops(struct ubifs_info *c)
+{
+       mutex_lock(&c->lp_mutex);
+}
+
+/**
+ * ubifs_release_lprops - release lprops lock.
+ * @c: the UBIFS file-system description object
+ *
+ * This function has to be called after each 'ubifs_get_lprops()' call to
+ * unlock lprops.
+ */
+static inline void ubifs_release_lprops(struct ubifs_info *c)
+{
+       ubifs_assert(mutex_is_locked(&c->lp_mutex));
+       ubifs_assert(c->lst.empty_lebs >= 0 &&
+                    c->lst.empty_lebs <= c->main_lebs);
+       mutex_unlock(&c->lp_mutex);
+}
+
 #endif /* __UBIFS_MISC_H__ */