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Diffstat (limited to 'fs/xfs/xfs_iomap.c')
-rw-r--r--fs/xfs/xfs_iomap.c61
1 files changed, 15 insertions, 46 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 08ce72316bfe..5aaa2d7ec155 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -338,38 +338,6 @@ xfs_iomap_eof_align_last_fsb(
338} 338}
339 339
340STATIC int 340STATIC int
341xfs_flush_space(
342 xfs_inode_t *ip,
343 int *fsynced,
344 int *ioflags)
345{
346 switch (*fsynced) {
347 case 0:
348 if (ip->i_delayed_blks) {
349 xfs_iunlock(ip, XFS_ILOCK_EXCL);
350 xfs_flush_inode(ip);
351 xfs_ilock(ip, XFS_ILOCK_EXCL);
352 *fsynced = 1;
353 } else {
354 *ioflags |= BMAPI_SYNC;
355 *fsynced = 2;
356 }
357 return 0;
358 case 1:
359 *fsynced = 2;
360 *ioflags |= BMAPI_SYNC;
361 return 0;
362 case 2:
363 xfs_iunlock(ip, XFS_ILOCK_EXCL);
364 xfs_flush_device(ip);
365 xfs_ilock(ip, XFS_ILOCK_EXCL);
366 *fsynced = 3;
367 return 0;
368 }
369 return 1;
370}
371
372STATIC int
373xfs_cmn_err_fsblock_zero( 341xfs_cmn_err_fsblock_zero(
374 xfs_inode_t *ip, 342 xfs_inode_t *ip,
375 xfs_bmbt_irec_t *imap) 343 xfs_bmbt_irec_t *imap)
@@ -538,15 +506,9 @@ error_out:
538} 506}
539 507
540/* 508/*
541 * If the caller is doing a write at the end of the file, 509 * If the caller is doing a write at the end of the file, then extend the
542 * then extend the allocation out to the file system's write 510 * allocation out to the file system's write iosize. We clean up any extra
543 * iosize. We clean up any extra space left over when the 511 * space left over when the file is closed in xfs_inactive().
544 * file is closed in xfs_inactive().
545 *
546 * For sync writes, we are flushing delayed allocate space to
547 * try to make additional space available for allocation near
548 * the filesystem full boundary - preallocation hurts in that
549 * situation, of course.
550 */ 512 */
551STATIC int 513STATIC int
552xfs_iomap_eof_want_preallocate( 514xfs_iomap_eof_want_preallocate(
@@ -565,7 +527,7 @@ xfs_iomap_eof_want_preallocate(
565 int n, error, imaps; 527 int n, error, imaps;
566 528
567 *prealloc = 0; 529 *prealloc = 0;
568 if ((ioflag & BMAPI_SYNC) || (offset + count) <= ip->i_size) 530 if ((offset + count) <= ip->i_size)
569 return 0; 531 return 0;
570 532
571 /* 533 /*
@@ -611,7 +573,7 @@ xfs_iomap_write_delay(
611 xfs_extlen_t extsz; 573 xfs_extlen_t extsz;
612 int nimaps; 574 int nimaps;
613 xfs_bmbt_irec_t imap[XFS_WRITE_IMAPS]; 575 xfs_bmbt_irec_t imap[XFS_WRITE_IMAPS];
614 int prealloc, fsynced = 0; 576 int prealloc, flushed = 0;
615 int error; 577 int error;
616 578
617 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 579 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
@@ -627,12 +589,12 @@ xfs_iomap_write_delay(
627 extsz = xfs_get_extsz_hint(ip); 589 extsz = xfs_get_extsz_hint(ip);
628 offset_fsb = XFS_B_TO_FSBT(mp, offset); 590 offset_fsb = XFS_B_TO_FSBT(mp, offset);
629 591
630retry:
631 error = xfs_iomap_eof_want_preallocate(mp, ip, offset, count, 592 error = xfs_iomap_eof_want_preallocate(mp, ip, offset, count,
632 ioflag, imap, XFS_WRITE_IMAPS, &prealloc); 593 ioflag, imap, XFS_WRITE_IMAPS, &prealloc);
633 if (error) 594 if (error)
634 return error; 595 return error;
635 596
597retry:
636 if (prealloc) { 598 if (prealloc) {
637 aligned_offset = XFS_WRITEIO_ALIGN(mp, (offset + count - 1)); 599 aligned_offset = XFS_WRITEIO_ALIGN(mp, (offset + count - 1));
638 ioalign = XFS_B_TO_FSBT(mp, aligned_offset); 600 ioalign = XFS_B_TO_FSBT(mp, aligned_offset);
@@ -659,15 +621,22 @@ retry:
659 621
660 /* 622 /*
661 * If bmapi returned us nothing, and if we didn't get back EDQUOT, 623 * If bmapi returned us nothing, and if we didn't get back EDQUOT,
662 * then we must have run out of space - flush delalloc, and retry.. 624 * then we must have run out of space - flush all other inodes with
625 * delalloc blocks and retry without EOF preallocation.
663 */ 626 */
664 if (nimaps == 0) { 627 if (nimaps == 0) {
665 xfs_iomap_enter_trace(XFS_IOMAP_WRITE_NOSPACE, 628 xfs_iomap_enter_trace(XFS_IOMAP_WRITE_NOSPACE,
666 ip, offset, count); 629 ip, offset, count);
667 if (xfs_flush_space(ip, &fsynced, &ioflag)) 630 if (flushed)
668 return XFS_ERROR(ENOSPC); 631 return XFS_ERROR(ENOSPC);
669 632
633 xfs_iunlock(ip, XFS_ILOCK_EXCL);
634 xfs_flush_inodes(ip);
635 xfs_ilock(ip, XFS_ILOCK_EXCL);
636
637 flushed = 1;
670 error = 0; 638 error = 0;
639 prealloc = 0;
671 goto retry; 640 goto retry;
672 } 641 }
673 642