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path: root/fs/xfs/linux-2.6/xfs_lrw.c
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Diffstat (limited to 'fs/xfs/linux-2.6/xfs_lrw.c')
-rw-r--r--fs/xfs/linux-2.6/xfs_lrw.c36
1 files changed, 10 insertions, 26 deletions
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 885dfafeabee..c73d3c18882c 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -362,7 +362,6 @@ STATIC int /* error (positive) */
362xfs_zero_last_block( 362xfs_zero_last_block(
363 struct inode *ip, 363 struct inode *ip,
364 xfs_iocore_t *io, 364 xfs_iocore_t *io,
365 xfs_off_t offset,
366 xfs_fsize_t isize, 365 xfs_fsize_t isize,
367 xfs_fsize_t end_size) 366 xfs_fsize_t end_size)
368{ 367{
@@ -371,19 +370,16 @@ xfs_zero_last_block(
371 int nimaps; 370 int nimaps;
372 int zero_offset; 371 int zero_offset;
373 int zero_len; 372 int zero_len;
374 int isize_fsb_offset;
375 int error = 0; 373 int error = 0;
376 xfs_bmbt_irec_t imap; 374 xfs_bmbt_irec_t imap;
377 loff_t loff; 375 loff_t loff;
378 size_t lsize;
379 376
380 ASSERT(ismrlocked(io->io_lock, MR_UPDATE) != 0); 377 ASSERT(ismrlocked(io->io_lock, MR_UPDATE) != 0);
381 ASSERT(offset > isize);
382 378
383 mp = io->io_mount; 379 mp = io->io_mount;
384 380
385 isize_fsb_offset = XFS_B_FSB_OFFSET(mp, isize); 381 zero_offset = XFS_B_FSB_OFFSET(mp, isize);
386 if (isize_fsb_offset == 0) { 382 if (zero_offset == 0) {
387 /* 383 /*
388 * There are no extra bytes in the last block on disk to 384 * There are no extra bytes in the last block on disk to
389 * zero, so return. 385 * zero, so return.
@@ -413,10 +409,8 @@ xfs_zero_last_block(
413 */ 409 */
414 XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD); 410 XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD);
415 loff = XFS_FSB_TO_B(mp, last_fsb); 411 loff = XFS_FSB_TO_B(mp, last_fsb);
416 lsize = XFS_FSB_TO_B(mp, 1);
417 412
418 zero_offset = isize_fsb_offset; 413 zero_len = mp->m_sb.sb_blocksize - zero_offset;
419 zero_len = mp->m_sb.sb_blocksize - isize_fsb_offset;
420 414
421 error = xfs_iozero(ip, loff + zero_offset, zero_len, end_size); 415 error = xfs_iozero(ip, loff + zero_offset, zero_len, end_size);
422 416
@@ -447,20 +441,17 @@ xfs_zero_eof(
447 struct inode *ip = LINVFS_GET_IP(vp); 441 struct inode *ip = LINVFS_GET_IP(vp);
448 xfs_fileoff_t start_zero_fsb; 442 xfs_fileoff_t start_zero_fsb;
449 xfs_fileoff_t end_zero_fsb; 443 xfs_fileoff_t end_zero_fsb;
450 xfs_fileoff_t prev_zero_fsb;
451 xfs_fileoff_t zero_count_fsb; 444 xfs_fileoff_t zero_count_fsb;
452 xfs_fileoff_t last_fsb; 445 xfs_fileoff_t last_fsb;
453 xfs_extlen_t buf_len_fsb; 446 xfs_extlen_t buf_len_fsb;
454 xfs_extlen_t prev_zero_count;
455 xfs_mount_t *mp; 447 xfs_mount_t *mp;
456 int nimaps; 448 int nimaps;
457 int error = 0; 449 int error = 0;
458 xfs_bmbt_irec_t imap; 450 xfs_bmbt_irec_t imap;
459 loff_t loff;
460 size_t lsize;
461 451
462 ASSERT(ismrlocked(io->io_lock, MR_UPDATE)); 452 ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
463 ASSERT(ismrlocked(io->io_iolock, MR_UPDATE)); 453 ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
454 ASSERT(offset > isize);
464 455
465 mp = io->io_mount; 456 mp = io->io_mount;
466 457
@@ -468,7 +459,7 @@ xfs_zero_eof(
468 * First handle zeroing the block on which isize resides. 459 * First handle zeroing the block on which isize resides.
469 * We only zero a part of that block so it is handled specially. 460 * We only zero a part of that block so it is handled specially.
470 */ 461 */
471 error = xfs_zero_last_block(ip, io, offset, isize, end_size); 462 error = xfs_zero_last_block(ip, io, isize, end_size);
472 if (error) { 463 if (error) {
473 ASSERT(ismrlocked(io->io_lock, MR_UPDATE)); 464 ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
474 ASSERT(ismrlocked(io->io_iolock, MR_UPDATE)); 465 ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
@@ -496,8 +487,6 @@ xfs_zero_eof(
496 } 487 }
497 488
498 ASSERT(start_zero_fsb <= end_zero_fsb); 489 ASSERT(start_zero_fsb <= end_zero_fsb);
499 prev_zero_fsb = NULLFILEOFF;
500 prev_zero_count = 0;
501 while (start_zero_fsb <= end_zero_fsb) { 490 while (start_zero_fsb <= end_zero_fsb) {
502 nimaps = 1; 491 nimaps = 1;
503 zero_count_fsb = end_zero_fsb - start_zero_fsb + 1; 492 zero_count_fsb = end_zero_fsb - start_zero_fsb + 1;
@@ -519,10 +508,7 @@ xfs_zero_eof(
519 * that sits on a hole and sets the page as P_HOLE 508 * that sits on a hole and sets the page as P_HOLE
520 * and calls remapf if it is a mapped file. 509 * and calls remapf if it is a mapped file.
521 */ 510 */
522 prev_zero_fsb = NULLFILEOFF; 511 start_zero_fsb = imap.br_startoff + imap.br_blockcount;
523 prev_zero_count = 0;
524 start_zero_fsb = imap.br_startoff +
525 imap.br_blockcount;
526 ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); 512 ASSERT(start_zero_fsb <= (end_zero_fsb + 1));
527 continue; 513 continue;
528 } 514 }
@@ -543,17 +529,15 @@ xfs_zero_eof(
543 */ 529 */
544 XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD); 530 XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
545 531
546 loff = XFS_FSB_TO_B(mp, start_zero_fsb); 532 error = xfs_iozero(ip,
547 lsize = XFS_FSB_TO_B(mp, buf_len_fsb); 533 XFS_FSB_TO_B(mp, start_zero_fsb),
548 534 XFS_FSB_TO_B(mp, buf_len_fsb),
549 error = xfs_iozero(ip, loff, lsize, end_size); 535 end_size);
550 536
551 if (error) { 537 if (error) {
552 goto out_lock; 538 goto out_lock;
553 } 539 }
554 540
555 prev_zero_fsb = start_zero_fsb;
556 prev_zero_count = buf_len_fsb;
557 start_zero_fsb = imap.br_startoff + buf_len_fsb; 541 start_zero_fsb = imap.br_startoff + buf_len_fsb;
558 ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); 542 ASSERT(start_zero_fsb <= (end_zero_fsb + 1));
559 543