Skip to main content

Browse the archive

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 
hugetlbfs: make hugepage size conversion more readable
 
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
Raw File
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
back to top