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vm_page_protect — lower a page's protection
#include <sys/param.h> #include <vm/vm.h> #include <vm/vm_page.h> void vm_page_protect(vm_page_t mem, int prot);
The vm_page_protect() function lowers a page's protection. The protection is never raised by this function; therefore, if the page is already at VM_PROT_NONE, the function does nothing. Its arguments are: mem The page whose protection is lowered. prot The protection the page should be reduced to. If VM_PROT_NONE is specified, then the PG_WRITABLE and PG_MAPPED flags are cleared and the pmap_page's protection is set to VM_PROT_NONE. If VM_PROT_READ is specified, then the PG_WRITABLE flag is cleared and the pmap_page's protection is set to VM_PROT_READ. Higher protection requests are ignored.
This manual page was written by Chad David <firstname.lastname@example.org>.