Changeset 1ec1fd8 in mainline

Timestamp:

2006-06-03T14:14:41Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f9b2f305

Parents:

3ba22ce

Message:

Slightly better behaviour with caching on memory sharing.

Location:

generic

Files:

• include/errno.h (modified) (1 diff)
• src/mm/as.c (modified) (1 diff)

generic/include/errno.h

@@ -47 +47 @@
 #define ETIMEOUT        -12     /* Timeout expired */
 #define EINVAL          -13     /* Invalid value */
+#define EBUSY           -14     /* Resource is busy */
 
 #endif

generic/src/mm/as.c

@@ -545 +545 @@
         src_backend = src_area->backend;
         src_backend_data = src_area->backend_data;
-        
+
+        /* Share the cacheable flag from the original mapping */
+        if (src_flags & AS_AREA_CACHEABLE)
+                dst_flags_mask |= AS_AREA_CACHEABLE;
+
         if (src_size != acc_size || (src_flags & dst_flags_mask) != dst_flags_mask) {
                 mutex_unlock(&src_area->lock);