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--- mywiki:linux:page_allocation [2016/05/18 15:20] – shaoguoh
+++ mywiki:linux:page_allocation [2019/09/15 18:55] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 | Reference |  |
-Linux Page Allocation
+====== Address Conversion ======
+===== page to Virtual address =====
+<file>
+struct page *page;
+unsigned char *p;
+p = page_address(page);
+</file>
+Other APIs:
+  * kmap_atomic
+  * __kunmap_atomic
+====== Linux Page Allocation ======
 Allocate pages
@@ Line 20: / Line 32: @@
    page = alloc_page(gfp_mask);
    if (page)
-      memcpy(**page_address**(page),  data, strlen(data)+1 );
+      memcpy(page_address(page),  data, strlen(data)+1 );
    /*free a page*/