diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_bmap.c')
-rw-r--r-- | fs/xfs/libxfs/xfs_bmap.c | 109 |
1 files changed, 45 insertions, 64 deletions
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index ad938e6e23aa..24462bdfd8e7 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -52,19 +52,17 @@ xfs_bmap_compute_maxlevels( xfs_mount_t *mp, /* file system mount structure */ int whichfork) /* data or attr fork */ { + uint64_t maxblocks; /* max blocks at this level */ + xfs_extnum_t maxleafents; /* max leaf entries possible */ int level; /* btree level */ - uint maxblocks; /* max blocks at this level */ - uint maxleafents; /* max leaf entries possible */ int maxrootrecs; /* max records in root block */ int minleafrecs; /* min records in leaf block */ int minnoderecs; /* min records in node block */ int sz; /* root block size */ /* - * The maximum number of extents in a file, hence the maximum number of - * leaf entries, is controlled by the size of the on-disk extent count, - * either a signed 32-bit number for the data fork, or a signed 16-bit - * number for the attr fork. + * The maximum number of extents in a fork, hence the maximum number of + * leaf entries, is controlled by the size of the on-disk extent count. * * Note that we can no longer assume that if we are in ATTR1 that the * fork offset of all the inodes will be @@ -74,22 +72,22 @@ xfs_bmap_compute_maxlevels( * ATTR2 we have to assume the worst case scenario of a minimum size * available. */ - if (whichfork == XFS_DATA_FORK) { - maxleafents = MAXEXTNUM; + maxleafents = xfs_iext_max_nextents(xfs_has_large_extent_counts(mp), + whichfork); + if (whichfork == XFS_DATA_FORK) sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS); - } else { - maxleafents = MAXAEXTNUM; + else sz = XFS_BMDR_SPACE_CALC(MINABTPTRS); - } + maxrootrecs = xfs_bmdr_maxrecs(sz, 0); minleafrecs = mp->m_bmap_dmnr[0]; minnoderecs = mp->m_bmap_dmnr[1]; - maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs; + maxblocks = howmany_64(maxleafents, minleafrecs); for (level = 1; maxblocks > 1; level++) { if (maxblocks <= maxrootrecs) maxblocks = 1; else - maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs; + maxblocks = howmany_64(maxblocks, minnoderecs); } mp->m_bm_maxlevels[whichfork] = level; ASSERT(mp->m_bm_maxlevels[whichfork] <= xfs_bmbt_maxlevels_ondisk()); @@ -468,7 +466,7 @@ error0: if (bp_release) xfs_trans_brelse(NULL, bp); error_norelse: - xfs_warn(mp, "%s: BAD after btree leaves for %d extents", + xfs_warn(mp, "%s: BAD after btree leaves for %llu extents", __func__, i); xfs_err(mp, "%s: CORRUPTED BTREE OR SOMETHING", __func__); xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); @@ -1452,7 +1450,7 @@ xfs_bmap_add_extent_delay_real( LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && LEFT.br_state == new->br_state && - LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) + LEFT.br_blockcount + new->br_blockcount <= XFS_MAX_BMBT_EXTLEN) state |= BMAP_LEFT_CONTIG; /* @@ -1470,13 +1468,13 @@ xfs_bmap_add_extent_delay_real( new_endoff == RIGHT.br_startoff && new->br_startblock + new->br_blockcount == RIGHT.br_startblock && new->br_state == RIGHT.br_state && - new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && + new->br_blockcount + RIGHT.br_blockcount <= XFS_MAX_BMBT_EXTLEN && ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) != (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING) || LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount - <= MAXEXTLEN)) + <= XFS_MAX_BMBT_EXTLEN)) state |= BMAP_RIGHT_CONTIG; error = 0; @@ -2000,7 +1998,7 @@ xfs_bmap_add_extent_unwritten_real( LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && LEFT.br_state == new->br_state && - LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) + LEFT.br_blockcount + new->br_blockcount <= XFS_MAX_BMBT_EXTLEN) state |= BMAP_LEFT_CONTIG; /* @@ -2018,13 +2016,13 @@ xfs_bmap_add_extent_unwritten_real( new_endoff == RIGHT.br_startoff && new->br_startblock + new->br_blockcount == RIGHT.br_startblock && new->br_state == RIGHT.br_state && - new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && + new->br_blockcount + RIGHT.br_blockcount <= XFS_MAX_BMBT_EXTLEN && ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) != (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING) || LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount - <= MAXEXTLEN)) + <= XFS_MAX_BMBT_EXTLEN)) state |= BMAP_RIGHT_CONTIG; /* @@ -2510,15 +2508,15 @@ xfs_bmap_add_extent_hole_delay( */ if ((state & BMAP_LEFT_VALID) && (state & BMAP_LEFT_DELAY) && left.br_startoff + left.br_blockcount == new->br_startoff && - left.br_blockcount + new->br_blockcount <= MAXEXTLEN) + left.br_blockcount + new->br_blockcount <= XFS_MAX_BMBT_EXTLEN) state |= BMAP_LEFT_CONTIG; if ((state & BMAP_RIGHT_VALID) && (state & BMAP_RIGHT_DELAY) && new->br_startoff + new->br_blockcount == right.br_startoff && - new->br_blockcount + right.br_blockcount <= MAXEXTLEN && + new->br_blockcount + right.br_blockcount <= XFS_MAX_BMBT_EXTLEN && (!(state & BMAP_LEFT_CONTIG) || (left.br_blockcount + new->br_blockcount + - right.br_blockcount <= MAXEXTLEN))) + right.br_blockcount <= XFS_MAX_BMBT_EXTLEN))) state |= BMAP_RIGHT_CONTIG; /* @@ -2661,17 +2659,17 @@ xfs_bmap_add_extent_hole_real( left.br_startoff + left.br_blockcount == new->br_startoff && left.br_startblock + left.br_blockcount == new->br_startblock && left.br_state == new->br_state && - left.br_blockcount + new->br_blockcount <= MAXEXTLEN) + left.br_blockcount + new->br_blockcount <= XFS_MAX_BMBT_EXTLEN) state |= BMAP_LEFT_CONTIG; if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && new->br_startoff + new->br_blockcount == right.br_startoff && new->br_startblock + new->br_blockcount == right.br_startblock && new->br_state == right.br_state && - new->br_blockcount + right.br_blockcount <= MAXEXTLEN && + new->br_blockcount + right.br_blockcount <= XFS_MAX_BMBT_EXTLEN && (!(state & BMAP_LEFT_CONTIG) || left.br_blockcount + new->br_blockcount + - right.br_blockcount <= MAXEXTLEN)) + right.br_blockcount <= XFS_MAX_BMBT_EXTLEN)) state |= BMAP_RIGHT_CONTIG; error = 0; @@ -2906,15 +2904,15 @@ xfs_bmap_extsize_align( /* * For large extent hint sizes, the aligned extent might be larger than - * MAXEXTLEN. In that case, reduce the size by an extsz so that it pulls - * the length back under MAXEXTLEN. The outer allocation loops handle - * short allocation just fine, so it is safe to do this. We only want to - * do it when we are forced to, though, because it means more allocation - * operations are required. + * XFS_BMBT_MAX_EXTLEN. In that case, reduce the size by an extsz so + * that it pulls the length back under XFS_BMBT_MAX_EXTLEN. The outer + * allocation loops handle short allocation just fine, so it is safe to + * do this. We only want to do it when we are forced to, though, because + * it means more allocation operations are required. */ - while (align_alen > MAXEXTLEN) + while (align_alen > XFS_MAX_BMBT_EXTLEN) align_alen -= extsz; - ASSERT(align_alen <= MAXEXTLEN); + ASSERT(align_alen <= XFS_MAX_BMBT_EXTLEN); /* * If the previous block overlaps with this proposed allocation @@ -3004,9 +3002,9 @@ xfs_bmap_extsize_align( return -EINVAL; } else { ASSERT(orig_off >= align_off); - /* see MAXEXTLEN handling above */ + /* see XFS_BMBT_MAX_EXTLEN handling above */ ASSERT(orig_end <= align_off + align_alen || - align_alen + extsz > MAXEXTLEN); + align_alen + extsz > XFS_MAX_BMBT_EXTLEN); } #ifdef DEBUG @@ -3971,7 +3969,7 @@ xfs_bmapi_reserve_delalloc( * Cap the alloc length. Keep track of prealloc so we know whether to * tag the inode before we return. */ - alen = XFS_FILBLKS_MIN(len + prealloc, MAXEXTLEN); + alen = XFS_FILBLKS_MIN(len + prealloc, XFS_MAX_BMBT_EXTLEN); if (!eof) alen = XFS_FILBLKS_MIN(alen, got->br_startoff - aoff); if (prealloc && alen >= len) @@ -4104,7 +4102,7 @@ xfs_bmapi_allocate( if (!xfs_iext_peek_prev_extent(ifp, &bma->icur, &bma->prev)) bma->prev.br_startoff = NULLFILEOFF; } else { - bma->length = XFS_FILBLKS_MIN(bma->length, MAXEXTLEN); + bma->length = XFS_FILBLKS_MIN(bma->length, XFS_MAX_BMBT_EXTLEN); if (!bma->eof) bma->length = XFS_FILBLKS_MIN(bma->length, bma->got.br_startoff - bma->offset); @@ -4424,8 +4422,8 @@ xfs_bmapi_write( * xfs_extlen_t and therefore 32 bits. Hence we have to * check for 32-bit overflows and handle them here. */ - if (len > (xfs_filblks_t)MAXEXTLEN) - bma.length = MAXEXTLEN; + if (len > (xfs_filblks_t)XFS_MAX_BMBT_EXTLEN) + bma.length = XFS_MAX_BMBT_EXTLEN; else bma.length = len; @@ -4526,14 +4524,16 @@ xfs_bmapi_convert_delalloc( return error; xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, 0); error = xfs_iext_count_may_overflow(ip, whichfork, XFS_IEXT_ADD_NOSPLIT_CNT); + if (error == -EFBIG) + error = xfs_iext_count_upgrade(tp, ip, + XFS_IEXT_ADD_NOSPLIT_CNT); if (error) goto out_trans_cancel; - xfs_trans_ijoin(tp, ip, 0); - if (!xfs_iext_lookup_extent(ip, ifp, offset_fsb, &bma.icur, &bma.got) || bma.got.br_startoff > offset_fsb) { /* @@ -4560,7 +4560,8 @@ xfs_bmapi_convert_delalloc( bma.ip = ip; bma.wasdel = true; bma.offset = bma.got.br_startoff; - bma.length = max_t(xfs_filblks_t, bma.got.br_blockcount, MAXEXTLEN); + bma.length = max_t(xfs_filblks_t, bma.got.br_blockcount, + XFS_MAX_BMBT_EXTLEN); bma.minleft = xfs_bmapi_minleft(tp, ip, whichfork); /* @@ -4641,7 +4642,7 @@ xfs_bmapi_remap( ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(len > 0); - ASSERT(len <= (xfs_filblks_t)MAXEXTLEN); + ASSERT(len <= (xfs_filblks_t)XFS_MAX_BMBT_EXTLEN); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK | XFS_BMAPI_PREALLOC | XFS_BMAPI_NORMAP))); @@ -5148,26 +5149,6 @@ xfs_bmap_del_extent_real( * Deleting the middle of the extent. */ - /* - * For directories, -ENOSPC is returned since a directory entry - * remove operation must not fail due to low extent count - * availability. -ENOSPC will be handled by higher layers of XFS - * by letting the corresponding empty Data/Free blocks to linger - * until a future remove operation. Dabtree blocks would be - * swapped with the last block in the leaf space and then the - * new last block will be unmapped. - * - * The above logic also applies to the source directory entry of - * a rename operation. - */ - error = xfs_iext_count_may_overflow(ip, whichfork, 1); - if (error) { - ASSERT(S_ISDIR(VFS_I(ip)->i_mode) && - whichfork == XFS_DATA_FORK); - error = -ENOSPC; - goto done; - } - old = got; got.br_blockcount = del->br_startoff - got.br_startoff; @@ -5641,7 +5622,7 @@ xfs_bmse_can_merge( if ((left->br_startoff + left->br_blockcount != startoff) || (left->br_startblock + left->br_blockcount != got->br_startblock) || (left->br_state != got->br_state) || - (left->br_blockcount + got->br_blockcount > MAXEXTLEN)) + (left->br_blockcount + got->br_blockcount > XFS_MAX_BMBT_EXTLEN)) return false; return true; |