x86: export set_memory_ro and set_memory_rw

bwallan · Ingo Molnar · commit a03352d2c1dc · 2008-09-30T09:06:41.000+02:00
Export set_memory_ro() and set_memory_rw() calls for use by drivers that need
to have more debug information about who might be writing to memory space.
this was initially developed for use while debugging a memory corruption
problem with e1000e.

Signed-off-by: Bruce Allan &lt;bruce.w.allan@intel.com&gt;
Signed-off-by: Jesse Brandeburg &lt;jesse.brandeburg@intel.com&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
@@ -906,11 +906,13 @@ int set_memory_ro(unsigned long addr, int numpages)
 {
 	return change_page_attr_clear(addr, numpages, __pgprot(_PAGE_RW));
 }
+EXPORT_SYMBOL_GPL(set_memory_ro);
 
 int set_memory_rw(unsigned long addr, int numpages)
 {
 	return change_page_attr_set(addr, numpages, __pgprot(_PAGE_RW));
 }
+EXPORT_SYMBOL_GPL(set_memory_rw);
 
 int set_memory_np(unsigned long addr, int numpages)
 {

Original file line number	Diff line number	Diff line change
`@@ -906,11 +906,13 @@ int set_memory_ro(unsigned long addr, int numpages)`
`906`	`906`	`{`
`907`	`907`	`return change_page_attr_clear(addr, numpages, __pgprot(_PAGE_RW));`
`908`	`908`	`}`
	`909`	`+EXPORT_SYMBOL_GPL(set_memory_ro);`
`909`	`910`
`910`	`911`	`int set_memory_rw(unsigned long addr, int numpages)`
`911`	`912`	`{`
`912`	`913`	`return change_page_attr_set(addr, numpages, __pgprot(_PAGE_RW));`
`913`	`914`	`}`
	`915`	`+EXPORT_SYMBOL_GPL(set_memory_rw);`
`914`	`916`
`915`	`917`	`int set_memory_np(unsigned long addr, int numpages)`
`916`	`918`	`{`