Displaying 1 result from an estimated 1 matches for "unmap_gr".
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unmap_src
2007 Mar 19
0
[PATCH 2/3] [RFC] User-space grant table device - changes to libxc
...p.index);
+ if (addr == MAP_FAILED) {
+ return NULL;
+ }
+
+ return addr;
+}
+
+int xc_gnttab_munmap(int xcg_handle,
+ void *start_address,
+ uint32_t count)
+{
+ struct ioctl_gntdev_get_offset_for_vaddr get_offset;
+ struct ioctl_gntdev_unmap_grant_ref unmap_grant;
+ int rc;
+
+ /* First, it is necessary to get the offset which was initially
used to
+ * mmap() the pages.
+ */
+ get_offset.vaddr = start_address;
+ if ((rc = ioctl(xcg_handle, IOCTL_GNTDEV_GET_OFFSET_FOR_VADDR,
+ &get_offset)))
+...