|
Server : Apache/2.4.18 (Ubuntu) System : Linux canvaswebdesign 3.13.0-71-generic #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015 x86_64 User : oppastar ( 1041) PHP Version : 7.0.33-0ubuntu0.16.04.15 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, Directory : /usr/src/linux-headers-4.4.0-112/include/linux/ |
Upload File : |
#ifndef __LINUX_VMACACHE_H
#define __LINUX_VMACACHE_H
#include <linux/sched.h>
#include <linux/mm.h>
/*
* Hash based on the page number. Provides a good hit rate for
* workloads with good locality and those with random accesses as well.
*/
#define VMACACHE_HASH(addr) ((addr >> PAGE_SHIFT) & VMACACHE_MASK)
static inline void vmacache_flush(struct task_struct *tsk)
{
memset(tsk->vmacache, 0, sizeof(tsk->vmacache));
}
extern void vmacache_flush_all(struct mm_struct *mm);
extern void vmacache_update(unsigned long addr, struct vm_area_struct *newvma);
extern struct vm_area_struct *vmacache_find(struct mm_struct *mm,
unsigned long addr);
#ifndef CONFIG_MMU
extern struct vm_area_struct *vmacache_find_exact(struct mm_struct *mm,
unsigned long start,
unsigned long end);
#endif
static inline void vmacache_invalidate(struct mm_struct *mm)
{
mm->vmacache_seqnum++;
/* deal with overflows */
if (unlikely(mm->vmacache_seqnum == 0))
vmacache_flush_all(mm);
}
#endif /* __LINUX_VMACACHE_H */