diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_rtbitmap.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_rtbitmap.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c index 106be2d0bb88..369eeb7a52ec 100644 --- a/fs/xfs/libxfs/xfs_rtbitmap.c +++ b/fs/xfs/libxfs/xfs_rtbitmap.c @@ -90,6 +90,9 @@ xfs_rtbuf_get( if (error) return error; + if (nmap == 0 || !xfs_bmap_is_real_extent(&map)) + return -EFSCORRUPTED; + ASSERT(map.br_startblock != NULLFSBLOCK); error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, XFS_FSB_TO_DADDR(mp, map.br_startblock), @@ -1033,14 +1036,17 @@ xfs_rtalloc_query_range( int is_free; int error = 0; - if (low_rec->ar_startblock > high_rec->ar_startblock) + if (low_rec->ar_startext > high_rec->ar_startext) return -EINVAL; - else if (low_rec->ar_startblock == high_rec->ar_startblock) + if (low_rec->ar_startext >= mp->m_sb.sb_rextents || + low_rec->ar_startext == high_rec->ar_startext) return 0; + if (high_rec->ar_startext >= mp->m_sb.sb_rextents) + high_rec->ar_startext = mp->m_sb.sb_rextents - 1; /* Iterate the bitmap, looking for discrepancies. */ - rtstart = low_rec->ar_startblock; - rem = high_rec->ar_startblock - rtstart; + rtstart = low_rec->ar_startext; + rem = high_rec->ar_startext - rtstart; while (rem) { /* Is the first block free? */ error = xfs_rtcheck_range(mp, tp, rtstart, 1, 1, &rtend, @@ -1050,13 +1056,13 @@ xfs_rtalloc_query_range( /* How long does the extent go for? */ error = xfs_rtfind_forw(mp, tp, rtstart, - high_rec->ar_startblock - 1, &rtend); + high_rec->ar_startext - 1, &rtend); if (error) break; if (is_free) { - rec.ar_startblock = rtstart; - rec.ar_blockcount = rtend - rtstart + 1; + rec.ar_startext = rtstart; + rec.ar_extcount = rtend - rtstart + 1; error = fn(tp, &rec, priv); if (error) @@ -1079,9 +1085,9 @@ xfs_rtalloc_query_all( { struct xfs_rtalloc_rec keys[2]; - keys[0].ar_startblock = 0; - keys[1].ar_startblock = tp->t_mountp->m_sb.sb_rblocks; - keys[0].ar_blockcount = keys[1].ar_blockcount = 0; + keys[0].ar_startext = 0; + keys[1].ar_startext = tp->t_mountp->m_sb.sb_rextents - 1; + keys[0].ar_extcount = keys[1].ar_extcount = 0; return xfs_rtalloc_query_range(tp, &keys[0], &keys[1], fn, priv); } |