328970de0e
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 021110 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 84 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190524100844.756442981@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved.
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*/
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#ifndef OCFS2_AOPS_H
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#define OCFS2_AOPS_H
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#include <linux/fs.h>
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handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
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struct page *page,
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unsigned from,
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unsigned to);
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int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
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struct inode *inode, unsigned int from,
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unsigned int to, int new);
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void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
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int walk_page_buffers( handle_t *handle,
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struct buffer_head *head,
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unsigned from,
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unsigned to,
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int *partial,
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int (*fn)( handle_t *handle,
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struct buffer_head *bh));
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int ocfs2_write_end_nolock(struct address_space *mapping,
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loff_t pos, unsigned len, unsigned copied, void *fsdata);
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typedef enum {
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OCFS2_WRITE_BUFFER = 0,
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OCFS2_WRITE_DIRECT,
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OCFS2_WRITE_MMAP,
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} ocfs2_write_type_t;
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int ocfs2_write_begin_nolock(struct address_space *mapping,
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loff_t pos, unsigned len, ocfs2_write_type_t type,
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struct page **pagep, void **fsdata,
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struct buffer_head *di_bh, struct page *mmap_page);
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int ocfs2_read_inline_data(struct inode *inode, struct page *page,
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struct buffer_head *di_bh);
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int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
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int ocfs2_get_block(struct inode *inode, sector_t iblock,
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struct buffer_head *bh_result, int create);
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/* all ocfs2_dio_end_io()'s fault */
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#define ocfs2_iocb_is_rw_locked(iocb) \
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test_bit(0, (unsigned long *)&iocb->private)
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static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
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{
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set_bit(0, (unsigned long *)&iocb->private);
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if (level)
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set_bit(1, (unsigned long *)&iocb->private);
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else
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clear_bit(1, (unsigned long *)&iocb->private);
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}
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/*
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* Using a named enum representing lock types in terms of #N bit stored in
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* iocb->private, which is going to be used for communication between
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* ocfs2_dio_end_io() and ocfs2_file_write/read_iter().
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*/
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enum ocfs2_iocb_lock_bits {
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OCFS2_IOCB_RW_LOCK = 0,
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OCFS2_IOCB_RW_LOCK_LEVEL,
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OCFS2_IOCB_NUM_LOCKS
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};
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#define ocfs2_iocb_clear_rw_locked(iocb) \
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clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private)
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#define ocfs2_iocb_rw_locked_level(iocb) \
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test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private)
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#endif /* OCFS2_FILE_H */
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