Revision a25fddced835ae53d18eb4bddabd719b4cebf624 authored by Miaohe Lin on 24 February 2021, 20:10:14 UTC, committed by Linus Torvalds on 24 February 2021, 21:38:35 UTC
The calculation 1U << (h->order + PAGE_SHIFT - 10) is actually equal to (PAGE_SHIFT << (h->order)) >> 10. So we can make it more readable by replace it with huge_page_size(h) >> 10. Link: https://lkml.kernel.org/r/20210122083141.24548-1-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 88ce3fe
info.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDS_INFO_H
#define _RDS_INFO_H
struct rds_info_lengths {
unsigned int nr;
unsigned int each;
};
struct rds_info_iterator;
/*
* These functions must fill in the fields of @lens to reflect the size
* of the available info source. If the snapshot fits in @len then it
* should be copied using @iter. The caller will deduce if it was copied
* or not by comparing the lengths.
*/
typedef void (*rds_info_func)(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
struct rds_info_lengths *lens);
void rds_info_register_func(int optname, rds_info_func func);
void rds_info_deregister_func(int optname, rds_info_func func);
int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
int __user *optlen);
void rds_info_copy(struct rds_info_iterator *iter, void *data,
unsigned long bytes);
void rds_info_iter_unmap(struct rds_info_iterator *iter);
#endif
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