Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #ifndef __DIO_DOT_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define __DIO_DOT_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/buffer_head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "incore.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static inline void gfs2_buffer_clear(struct buffer_head *bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	memset(bh->b_data, 0, bh->b_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static inline void gfs2_buffer_clear_tail(struct buffer_head *bh, int head)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	BUG_ON(head > bh->b_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	memset(bh->b_data + head, 0, bh->b_size - head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 					 int to_head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 					 struct buffer_head *from_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 					 int from_head)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	BUG_ON(from_head < to_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	memcpy(to_bh->b_data + to_head, from_bh->b_data + from_head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	       from_bh->b_size - from_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	memset(to_bh->b_data + to_bh->b_size + to_head - from_head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	       0, from_head - to_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) extern const struct address_space_operations gfs2_meta_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) extern const struct address_space_operations gfs2_rgrp_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static inline struct gfs2_sbd *gfs2_mapping2sbd(struct address_space *mapping)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	struct inode *inode = mapping->host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	if (mapping->a_ops == &gfs2_meta_aops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		return (((struct gfs2_glock *)mapping) - 1)->gl_name.ln_sbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	else if (mapping->a_ops == &gfs2_rgrp_aops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		return container_of(mapping, struct gfs2_sbd, sd_aspace);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		return inode->i_sb->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) extern struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, u64 blkno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) extern int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 			  int rahead, struct buffer_head **bhp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) extern int gfs2_meta_wait(struct gfs2_sbd *sdp, struct buffer_head *bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) extern struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 				       int create);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	REMOVE_JDATA = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	REMOVE_META = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) extern void gfs2_remove_from_journal(struct buffer_head *bh, int meta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) extern void gfs2_journal_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) extern int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 				     struct buffer_head **bhp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 					 struct buffer_head **bhp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	return gfs2_meta_indirect_buffer(ip, 0, ip->i_no_addr, bhp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define buffer_busy(bh) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) ((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock) | (1ul << BH_Pinned)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #endif /* __DIO_DOT_H__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)