* [djwong-xfs:djwong-wtf 550/551] fs/xfs/xfs_bmap_util.c:1359 xfs_map_free_extent() warn: missing error code 'error'
@ 2023-05-11 3:32 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-05-11 3:32 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp, Dan Carpenter
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: "Darrick J. Wong" <darrick.wong@oracle.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git djwong-wtf
head: 75566dbd7f7fd612d267138945ab62d3909df62f
commit: 73bc6f853c0f4d9c98df25d1700225b6eb30ef00 [550/551] xfs: fallocate free space into a file
:::::: branch date: 35 hours ago
:::::: commit date: 35 hours ago
config: mips-randconfig-m041-20230509 (https://download.01.org/0day-ci/archive/20230511/202305111129.2jubbUkO-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 12.1.0
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Link: https://lore.kernel.org/r/202305111129.2jubbUkO-lkp@intel.com/
New smatch warnings:
fs/xfs/xfs_bmap_util.c:1359 xfs_map_free_extent() warn: missing error code 'error'
fs/xfs/xfs_bmap_util.c:1505 xfs_map_free_rt_extent() warn: missing error code 'error'
Old smatch warnings:
fs/xfs/xfs_buf.h:450 xfs_buftarg_zeroout() warn: bitwise AND condition is false here
vim +/error +1359 fs/xfs/xfs_bmap_util.c
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1327
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1328 /* Find a free extent in this AG and map it into the file. */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1329 STATIC int
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1330 xfs_map_free_extent(
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1331 struct xfs_inode *ip,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1332 struct xfs_perag *pag,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1333 xfs_agblock_t *cursor,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1334 xfs_agblock_t end_agbno,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1335 xfs_agblock_t *last_enospc_agbno)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1336 {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1337 struct xfs_bmbt_irec irec;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1338 struct xfs_mount *mp = ip->i_mount;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1339 struct xfs_trans *tp;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1340 xfs_off_t endpos;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1341 xfs_fsblock_t fsbno;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1342 xfs_extlen_t len;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1343 int error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1344
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1345 if (fatal_signal_pending(current))
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1346 return -EINTR;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1347
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1348 error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_write, 0, 0, false,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1349 &tp);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1350 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1351 return error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1352
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1353 error = xfs_alloc_find_freesp(tp, pag, cursor, end_agbno, &len);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1354 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1355 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1356
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1357 /* Bail out if the cursor is beyond what we asked for. */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1358 if (*cursor >= end_agbno)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 @1359 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1360
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1361 error = xfs_map_free_reserve_more(tp, ip, &len);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1362 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1363 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1364
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1365 fsbno = XFS_AGB_TO_FSB(mp, pag->pag_agno, *cursor);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1366 do {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1367 error = xfs_bmapi_freesp(tp, ip, fsbno, len, &irec);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1368 if (error == -EAGAIN) {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1369 /* Failed to map space but were told to try again. */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1370 error = xfs_trans_commit(tp);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1371 goto out;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1372 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1373 if (error != -ENOSPC)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1374 break;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1375 /*
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1376 * If we can't get the space, try asking for successively less
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1377 * space in case we're bumping up against per-AG metadata
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1378 * reservation limits...
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1379 */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1380 len >>= 1;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1381 } while (len > 0);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1382 if (error == -ENOSPC && *last_enospc_agbno != *cursor) {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1383 /*
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1384 * ...but even that might not work if an AGFL fixup allocated
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1385 * the block at *cursor. The first time this happens, remember
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1386 * that we ran out of space here, and try again.
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1387 */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1388 *last_enospc_agbno = *cursor;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1389 error = 0;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1390 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1391 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1392 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1393 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1394
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1395 /* Update isize if needed. */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1396 endpos = XFS_FSB_TO_B(mp, irec.br_startoff + irec.br_blockcount);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1397 if (endpos > i_size_read(VFS_I(ip))) {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1398 i_size_write(VFS_I(ip), endpos);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1399 ip->i_disk_size = endpos;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1400 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1401 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1402
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1403 error = xfs_trans_commit(tp);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1404 xfs_iunlock(ip, XFS_ILOCK_EXCL);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1405 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1406 return error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1407
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1408 *cursor += irec.br_blockcount;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1409 return 0;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1410 out_cancel:
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1411 xfs_trans_cancel(tp);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1412 out:
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1413 xfs_iunlock(ip, XFS_ILOCK_EXCL);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1414 return error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1415 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1416
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1417 /*
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1418 * Allocate all free physical space between off and len and map it to this
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1419 * regular non-realtime file.
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1420 */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1421 int
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1422 xfs_map_free_space(
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1423 struct xfs_inode *ip,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1424 xfs_off_t off,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1425 xfs_off_t len)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1426 {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1427 struct xfs_mount *mp = ip->i_mount;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1428 struct xfs_perag *pag = NULL;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1429 xfs_daddr_t off_daddr = BTOBB(off);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1430 xfs_daddr_t end_daddr = BTOBBT(off + len);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1431 xfs_fsblock_t off_fsb = XFS_DADDR_TO_FSB(mp, off_daddr);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1432 xfs_fsblock_t end_fsb = XFS_DADDR_TO_FSB(mp, end_daddr);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1433 xfs_agnumber_t off_agno = XFS_FSB_TO_AGNO(mp, off_fsb);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1434 xfs_agnumber_t end_agno = XFS_FSB_TO_AGNO(mp, end_fsb);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1435 xfs_agnumber_t agno;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1436 int error = 0;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1437
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1438 trace_xfs_map_free_space(ip, off, len);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1439
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1440 agno = off_agno;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1441 for_each_perag_range(mp, agno, end_agno, pag) {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1442 xfs_agblock_t off_agbno = 0;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1443 xfs_agblock_t end_agbno;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1444 xfs_agblock_t last_enospc_agbno = NULLAGBLOCK;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1445
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1446 end_agbno = xfs_ag_block_count(mp, pag->pag_agno);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1447
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1448 if (pag->pag_agno == off_agno)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1449 off_agbno = XFS_FSB_TO_AGBNO(mp, off_fsb);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1450 if (pag->pag_agno == end_agno)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1451 end_agbno = XFS_FSB_TO_AGBNO(mp, end_fsb);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1452
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1453 while (off_agbno < end_agbno) {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1454 error = xfs_map_free_extent(ip, pag, &off_agbno,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1455 end_agbno, &last_enospc_agbno);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1456 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1457 goto out;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1458 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1459 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1460
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1461 out:
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1462 if (pag)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1463 xfs_perag_rele(pag);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1464 if (error == -ENOSPC)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1465 return 0;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1466 return error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1467 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1468
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1469 #ifdef CONFIG_XFS_RT
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1470 STATIC int
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1471 xfs_map_free_rt_extent(
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1472 struct xfs_inode *ip,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1473 xfs_rtxnum_t *cursor,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1474 xfs_rtxnum_t end_rtx)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1475 {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1476 struct xfs_bmbt_irec irec;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1477 struct xfs_mount *mp = ip->i_mount;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1478 struct xfs_trans *tp;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1479 xfs_off_t endpos;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1480 xfs_rtblock_t rtbno;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1481 xfs_rtxnum_t add;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1482 xfs_rtxlen_t len_rtx;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1483 xfs_extlen_t len;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1484 uint32_t mod;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1485 int error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1486
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1487 if (fatal_signal_pending(current))
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1488 return -EINTR;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1489
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1490 error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_write, 0, 0, false,
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1491 &tp);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1492 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1493 return error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1494
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1495 xfs_rtbitmap_lock(tp, mp);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1496 error = xfs_rtalloc_find_freesp(tp, cursor, end_rtx, &len_rtx);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1497 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1498 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1499
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1500 /*
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1501 * If off_rtx is beyond the end of the rt device or is past what the
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1502 * user asked for, bail out.
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1503 */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1504 if (*cursor >= end_rtx)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 @1505 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1506
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1507 len = xfs_rtx_to_rtb(mp, len_rtx);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1508 error = xfs_map_free_reserve_more(tp, ip, &len);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1509 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1510 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1511
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1512 rtbno = xfs_rtx_to_rtb(mp, *cursor);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1513 error = xfs_bmapi_freesp(tp, ip, rtbno, len, &irec);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1514 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1515 goto out_cancel;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1516
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1517 /* Update isize if needed. */
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1518 endpos = XFS_FSB_TO_B(mp, irec.br_startoff + irec.br_blockcount);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1519 if (endpos > i_size_read(VFS_I(ip))) {
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1520 i_size_write(VFS_I(ip), endpos);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1521 ip->i_disk_size = endpos;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1522 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1523 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1524
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1525 error = xfs_trans_commit(tp);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1526 xfs_iunlock(ip, XFS_ILOCK_EXCL);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1527 if (error)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1528 return error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1529
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1530 add = xfs_rtb_to_rtx(mp, irec.br_blockcount, &mod);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1531 if (mod)
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1532 return -EFSCORRUPTED;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1533
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1534 *cursor += add;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1535 return 0;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1536 out_cancel:
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1537 xfs_trans_cancel(tp);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1538 xfs_iunlock(ip, XFS_ILOCK_EXCL);
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1539 return error;
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1540 }
73bc6f853c0f4d Darrick J. Wong 2023-03-06 1541
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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2023-05-11 3:32 [djwong-xfs:djwong-wtf 550/551] fs/xfs/xfs_bmap_util.c:1359 xfs_map_free_extent() warn: missing error code 'error' kernel test robot
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