196 int jfs_get_block(struct inode *ip, sector_t lblock,  in jfs_get_block()  argument
204 	s32 xlen = bh_result->b_size >> ip->i_blkbits;  in jfs_get_block()
210 		IWRITE_LOCK(ip, RDWRLOCK_NORMAL);  in jfs_get_block()
212 		IREAD_LOCK(ip, RDWRLOCK_NORMAL);  in jfs_get_block()
214 	if (((lblock64 << ip->i_sb->s_blocksize_bits) < ip->i_size) &&  in jfs_get_block()
215 	    (!xtLookup(ip, lblock64, xlen, &xflag, &xaddr, &xlen, 0)) &&  in jfs_get_block()
236 			rc = extRecord(ip, &xad);  in jfs_get_block()
242 		map_bh(bh_result, ip->i_sb, xaddr);  in jfs_get_block()
243 		bh_result->b_size = xlen << ip->i_blkbits;  in jfs_get_block()
253 	if ((rc = extHint(ip, lblock64 << ip->i_sb->s_blocksize_bits, &xad)))  in jfs_get_block()
255 	rc = extAlloc(ip, xlen, lblock64, &xad, false);  in jfs_get_block()
260 	map_bh(bh_result, ip->i_sb, addressXAD(&xad));  in jfs_get_block()
261 	bh_result->b_size = lengthXAD(&xad) << ip->i_blkbits;  in jfs_get_block()
276 		IWRITE_UNLOCK(ip);  in jfs_get_block()
278 		IREAD_UNLOCK(ip);  in jfs_get_block()
374 void jfs_truncate_nolock(struct inode *ip, loff_t length)  in jfs_truncate_nolock()  argument
381 	if (test_cflag(COMMIT_Nolink, ip)) {  in jfs_truncate_nolock()
382 		xtTruncate(0, ip, length, COMMIT_WMAP);  in jfs_truncate_nolock()
387 		tid = txBegin(ip->i_sb, 0);  in jfs_truncate_nolock()
395 		mutex_lock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
397 		newsize = xtTruncate(tid, ip, length,  in jfs_truncate_nolock()
401 			mutex_unlock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
405 		ip->i_mtime = ip->i_ctime = CURRENT_TIME;  in jfs_truncate_nolock()
406 		mark_inode_dirty(ip);  in jfs_truncate_nolock()
408 		txCommit(tid, 1, &ip, 0);  in jfs_truncate_nolock()
410 		mutex_unlock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
414 void jfs_truncate(struct inode *ip)  in jfs_truncate()  argument
416 	jfs_info("jfs_truncate: size = 0x%lx", (ulong) ip->i_size);  in jfs_truncate()
418 	nobh_truncate_page(ip->i_mapping, ip->i_size, jfs_get_block);  in jfs_truncate()
420 	IWRITE_LOCK(ip, RDWRLOCK_NORMAL);  in jfs_truncate()
421 	jfs_truncate_nolock(ip, ip->i_size);  in jfs_truncate()
422 	IWRITE_UNLOCK(ip);  in jfs_truncate()