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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/linux/vmacache.h
1 #ifndef __LINUX_VMACACHE_H
2 #define __LINUX_VMACACHE_H
4 #include <linux/sched.h>
8 * Hash based on the page number. Provides a good hit rate for
9 * workloads with good locality and those with random accesses as well.
11 #define VMACACHE_HASH(addr) ((addr >> PAGE_SHIFT) & VMACACHE_MASK)
13 static inline void vmacache_flush(struct task_struct
*tsk
)
15 memset(tsk
->vmacache
.vmas
, 0, sizeof(tsk
->vmacache
.vmas
));
18 extern void vmacache_flush_all(struct mm_struct
*mm
);
19 extern void vmacache_update(unsigned long addr
, struct vm_area_struct
*newvma
);
20 extern struct vm_area_struct
*vmacache_find(struct mm_struct
*mm
,
24 extern struct vm_area_struct
*vmacache_find_exact(struct mm_struct
*mm
,
29 static inline void vmacache_invalidate(struct mm_struct
*mm
)
31 mm
->vmacache_seqnum
++;
33 /* deal with overflows */
34 if (unlikely(mm
->vmacache_seqnum
== 0))
35 vmacache_flush_all(mm
);
38 #endif /* __LINUX_VMACACHE_H */