linux-master/mm/filemap.c

3099 	unsigned int mmap_miss;
3132 	mmap_miss = READ_ONCE(ra->mmap_miss);
3133 	if (mmap_miss < MMAP_LOTSAMISS * 10)
3134 		WRITE_ONCE(ra->mmap_miss, ++mmap_miss);
3140 	if (mmap_miss > MMAP_LOTSAMISS)
3167 	unsigned int mmap_miss;
3173 	mmap_miss = READ_ONCE(ra->mmap_miss);
3174 	if (mmap_miss)
3175 		WRITE_ONCE(ra->mmap_miss, --mmap_miss);
3484 			unsigned int *mmap_miss)
3495 		(*mmap_miss)++;
3536 		unsigned int *mmap_miss)
3544 	(*mmap_miss)++;
3574 	unsigned int nr_pages = 0, mmap_miss = 0, mmap_miss_saved;
3604 					folio, addr, &mmap_miss);
3608 					nr_pages, &mmap_miss);
3617 	mmap_miss_saved = READ_ONCE(file->f_ra.mmap_miss);
3618 	if (mmap_miss >= mmap_miss_saved)
3619 		WRITE_ONCE(file->f_ra.mmap_miss, 0);
3621 		WRITE_ONCE(file->f_ra.mmap_miss, mmap_miss_saved - mmap_miss);