197 int jfs_get_block(struct inode *ip, sector_t lblock,  in jfs_get_block()  argument
205 	s32 xlen = bh_result->b_size >> ip->i_blkbits;  in jfs_get_block()
211 		IWRITE_LOCK(ip, RDWRLOCK_NORMAL);  in jfs_get_block()
213 		IREAD_LOCK(ip, RDWRLOCK_NORMAL);  in jfs_get_block()
215 	if (((lblock64 << ip->i_sb->s_blocksize_bits) < ip->i_size) &&  in jfs_get_block()
216 	    (!xtLookup(ip, lblock64, xlen, &xflag, &xaddr, &xlen, 0)) &&  in jfs_get_block()
237 			rc = extRecord(ip, &xad);  in jfs_get_block()
243 		map_bh(bh_result, ip->i_sb, xaddr);  in jfs_get_block()
244 		bh_result->b_size = xlen << ip->i_blkbits;  in jfs_get_block()
254 	if ((rc = extHint(ip, lblock64 << ip->i_sb->s_blocksize_bits, &xad)))  in jfs_get_block()
256 	rc = extAlloc(ip, xlen, lblock64, &xad, false);  in jfs_get_block()
261 	map_bh(bh_result, ip->i_sb, addressXAD(&xad));  in jfs_get_block()
262 	bh_result->b_size = lengthXAD(&xad) << ip->i_blkbits;  in jfs_get_block()
277 		IWRITE_UNLOCK(ip);  in jfs_get_block()
279 		IREAD_UNLOCK(ip);  in jfs_get_block()
375 void jfs_truncate_nolock(struct inode *ip, loff_t length)  in jfs_truncate_nolock()  argument
382 	if (test_cflag(COMMIT_Nolink, ip)) {  in jfs_truncate_nolock()
383 		xtTruncate(0, ip, length, COMMIT_WMAP);  in jfs_truncate_nolock()
388 		tid = txBegin(ip->i_sb, 0);  in jfs_truncate_nolock()
396 		mutex_lock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
398 		newsize = xtTruncate(tid, ip, length,  in jfs_truncate_nolock()
402 			mutex_unlock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
406 		ip->i_mtime = ip->i_ctime = CURRENT_TIME;  in jfs_truncate_nolock()
407 		mark_inode_dirty(ip);  in jfs_truncate_nolock()
409 		txCommit(tid, 1, &ip, 0);  in jfs_truncate_nolock()
411 		mutex_unlock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
415 void jfs_truncate(struct inode *ip)  in jfs_truncate()  argument
417 	jfs_info("jfs_truncate: size = 0x%lx", (ulong) ip->i_size);  in jfs_truncate()
419 	nobh_truncate_page(ip->i_mapping, ip->i_size, jfs_get_block);  in jfs_truncate()
421 	IWRITE_LOCK(ip, RDWRLOCK_NORMAL);  in jfs_truncate()
422 	jfs_truncate_nolock(ip, ip->i_size);  in jfs_truncate()
423 	IWRITE_UNLOCK(ip);  in jfs_truncate()