fs/jfs/jfs_dmap.c

145  *	ipbmap	- pointer to in-core inode for the block map.
153 int dbMount(struct inode *ipbmap)
169 	mp = read_metapage(ipbmap,
170 			   BMAPBLKNO << JFS_SBI(ipbmap->i_sb)->l2nbperpage,
229 	bmp->db_ipbmap = ipbmap;
230 	JFS_SBI(ipbmap->i_sb)->bmap = bmp;
259  *	ipbmap	- pointer to in-core inode for the block map.
265 int dbUnmount(struct inode *ipbmap, int mounterror)
267 	struct bmap *bmp = JFS_SBI(ipbmap->i_sb)->bmap;
269 	if (!(mounterror || isReadOnly(ipbmap)))
270 		dbSync(ipbmap);
275 	truncate_inode_pages(ipbmap->i_mapping, 0);
279 	JFS_SBI(ipbmap->i_sb)->bmap = NULL;
287 int dbSync(struct inode *ipbmap)
290 	struct bmap *bmp = JFS_SBI(ipbmap->i_sb)->bmap;
298 	mp = read_metapage(ipbmap,
299 			   BMAPBLKNO << JFS_SBI(ipbmap->i_sb)->l2nbperpage,
330 	filemap_write_and_wait(ipbmap->i_mapping);
332 	diWriteSpecial(ipbmap, 0);
361 	struct inode *ipbmap = JFS_SBI(ip->i_sb)->ipbmap;
363 	struct super_block *sb = ipbmap->i_sb;
365 	IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
369 		IREAD_UNLOCK(ipbmap);
382 			jfs_issue_discard(ipbmap, blkno, nblocks);
396 		mp = read_metapage(ipbmap, lblkno, PSIZE, 0);
398 			IREAD_UNLOCK(ipbmap);
412 			IREAD_UNLOCK(ipbmap);
421 	IREAD_UNLOCK(ipbmap);
437  *	ipbmap	- pointer to in-core inode for the block map.
449 dbUpdatePMap(struct inode *ipbmap,
454 	struct bmap *bmp = JFS_SBI(ipbmap->i_sb)->bmap;
468 		jfs_error(ipbmap->i_sb, "blocks are outside the map\n");
623  *	ipbmap	- pointer to in-core inode for the block map.
628 int dbNextAG(struct inode *ipbmap)
635 	struct bmap *bmp = JFS_SBI(ipbmap->i_sb)->bmap;
728 	struct inode *ipbmap = JFS_SBI(ip->i_sb)->ipbmap;
760 		IWRITE_LOCK(ipbmap, RDWRLOCK_DMAP);
801 		IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
807 		mp = read_metapage(ipbmap, lblkno, PSIZE, 0);
835 			IREAD_UNLOCK(ipbmap);
865 		IREAD_UNLOCK(ipbmap);
871 	IWRITE_LOCK(ipbmap, RDWRLOCK_DMAP);
875 	IWRITE_UNLOCK(ipbmap);
882 	agno = dbNextAG(ipbmap);
883 	IWRITE_LOCK(ipbmap, RDWRLOCK_DMAP);
892 	IWRITE_UNLOCK(ipbmap);
897 	IREAD_UNLOCK(ipbmap);
991 	struct inode *ipbmap = sbi->ipbmap;
1009 	IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
1014 		IREAD_UNLOCK(ipbmap);
1029 		IREAD_UNLOCK(ipbmap);
1037 	mp = read_metapage(ipbmap, lblkno, PSIZE, 0);
1039 		IREAD_UNLOCK(ipbmap);
1050 	IREAD_UNLOCK(ipbmap);
1080  * serialization: IREAD_LOCK(ipbmap) held on entry/exit;
1211  * serialization: IREAD_LOCK(ipbmap) held on entry/exit;
1519  * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
1553  *		   while holding IWRITE_LOCK on ipbmap
1559  *		  need to lock ipbmap
1578 	struct inode *ipbmap = JFS_SBI(ip->i_sb)->ipbmap;
1583 	struct super_block *sb = ipbmap->i_sb;
1595 	IWRITE_LOCK(ipbmap, RDWRLOCK_DMAP);
1604 		IWRITE_UNLOCK(ipbmap);
1640 	IWRITE_UNLOCK(ipbmap);
1682  * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
1800  * serialization: IWRITE_LOCK(ipbmap) held on entry/exit;
1950  * serialization: IREAD_LOCK(ipbmap), e.g., from dbAlloc(), or
1951  *	IWRITE_LOCK(ipbmap), e.g., dbAllocCtl(), held on entry/exit;
2018  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
2073  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
2135  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
2282  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
2465  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
2622  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
2687  * serialization: IREAD_LOCK(ipbmap) or IWRITE_LOCK(ipbmap) held on entry/exit;
3189 	struct inode *ipbmap = JFS_SBI(ip->i_sb)->ipbmap;
3192 	IREAD_LOCK(ipbmap, RDWRLOCK_DMAP);
3209 		mp = read_metapage(ipbmap, lblkno, PSIZE, 0);
3211 			IREAD_UNLOCK(ipbmap);
3224 			IREAD_UNLOCK(ipbmap);
3232 	IREAD_UNLOCK(ipbmap);
3359 int dbExtendFS(struct inode *ipbmap, s64 blkno,	s64 nblocks)
3361 	struct jfs_sb_info *sbi = JFS_SBI(ipbmap->i_sb);
3443 	l2mp = read_metapage(ipbmap, p, PSIZE, 0);
3445 		jfs_error(ipbmap->i_sb, "L2 page could not be read\n");
3462 			l1mp = read_metapage(ipbmap, p, PSIZE, 0);
3474 			l1mp = get_metapage(ipbmap, p, PSIZE, 0);
3494 				l0mp = read_metapage(ipbmap, p, PSIZE, 0);
3508 				l0mp = get_metapage(ipbmap, p, PSIZE, 0);
3530 					mp = read_metapage(ipbmap, p,
3537 					mp = read_metapage(ipbmap, p,
3610 	jfs_error(ipbmap->i_sb, "function has not returned as expected\n");
3631 void dbFinalizeBmap(struct inode *ipbmap)
3633 	struct bmap *bmp = JFS_SBI(ipbmap->i_sb)->bmap;
3679 			jfs_error(ipbmap->i_sb,
4026 s64 dbMapFileSizeToMapSize(struct inode * ipbmap)
4028 	struct super_block *sb = ipbmap->i_sb;
4034 	nblocks = ipbmap->i_size >> JFS_SBI(sb)->l2bsize;