cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

aops.h (2368B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * Copyright (C) 2002, 2004, 2005 Oracle.  All rights reserved.
      4 */
      5
      6#ifndef OCFS2_AOPS_H
      7#define OCFS2_AOPS_H
      8
      9#include <linux/fs.h>
     10
     11handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
     12							 struct page *page,
     13							 unsigned from,
     14							 unsigned to);
     15
     16int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
     17			  struct inode *inode, unsigned int from,
     18			  unsigned int to, int new);
     19
     20void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
     21
     22int walk_page_buffers(	handle_t *handle,
     23			struct buffer_head *head,
     24			unsigned from,
     25			unsigned to,
     26			int *partial,
     27			int (*fn)(	handle_t *handle,
     28					struct buffer_head *bh));
     29
     30int ocfs2_write_end_nolock(struct address_space *mapping,
     31			   loff_t pos, unsigned len, unsigned copied, void *fsdata);
     32
     33typedef enum {
     34	OCFS2_WRITE_BUFFER = 0,
     35	OCFS2_WRITE_DIRECT,
     36	OCFS2_WRITE_MMAP,
     37} ocfs2_write_type_t;
     38
     39int ocfs2_write_begin_nolock(struct address_space *mapping,
     40			     loff_t pos, unsigned len, ocfs2_write_type_t type,
     41			     struct page **pagep, void **fsdata,
     42			     struct buffer_head *di_bh, struct page *mmap_page);
     43
     44int ocfs2_read_inline_data(struct inode *inode, struct page *page,
     45			   struct buffer_head *di_bh);
     46int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
     47
     48int ocfs2_get_block(struct inode *inode, sector_t iblock,
     49		    struct buffer_head *bh_result, int create);
     50/* all ocfs2_dio_end_io()'s fault */
     51#define ocfs2_iocb_is_rw_locked(iocb) \
     52	test_bit(0, (unsigned long *)&iocb->private)
     53static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
     54{
     55	set_bit(0, (unsigned long *)&iocb->private);
     56	if (level)
     57		set_bit(1, (unsigned long *)&iocb->private);
     58	else
     59		clear_bit(1, (unsigned long *)&iocb->private);
     60}
     61
     62/*
     63 * Using a named enum representing lock types in terms of #N bit stored in
     64 * iocb->private, which is going to be used for communication between
     65 * ocfs2_dio_end_io() and ocfs2_file_write/read_iter().
     66 */
     67enum ocfs2_iocb_lock_bits {
     68	OCFS2_IOCB_RW_LOCK = 0,
     69	OCFS2_IOCB_RW_LOCK_LEVEL,
     70	OCFS2_IOCB_NUM_LOCKS
     71};
     72
     73#define ocfs2_iocb_clear_rw_locked(iocb) \
     74	clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private)
     75#define ocfs2_iocb_rw_locked_level(iocb) \
     76	test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private)
     77
     78#endif /* OCFS2_FILE_H */