diff options
| -rw-r--r-- | fs/xfs/libxfs/xfs_alloc_btree.c | 60 |
1 files changed, 25 insertions, 35 deletions
diff --git a/fs/xfs/libxfs/xfs_alloc_btree.c b/fs/xfs/libxfs/xfs_alloc_btree.c index 480d0f52da64..9fe949f6055e 100644 --- a/fs/xfs/libxfs/xfs_alloc_btree.c +++ b/fs/xfs/libxfs/xfs_alloc_btree.c @@ -297,48 +297,34 @@ xfs_allocbt_verify( struct xfs_perag *pag = bp->b_pag; xfs_failaddr_t fa; unsigned int level; + xfs_btnum_t btnum = XFS_BTNUM_BNOi; + + if (!xfs_verify_magic(bp, block->bb_magic)) + return __this_address; + + if (xfs_sb_version_hascrc(&mp->m_sb)) { + fa = xfs_btree_sblock_v5hdr_verify(bp); + if (fa) + return fa; + } /* - * magic number and level verification - * - * During growfs operations, we can't verify the exact level or owner as - * the perag is not fully initialised and hence not attached to the - * buffer. In this case, check against the maximum tree depth. + * The perag may not be attached during grow operations or fully + * initialized from the AGF during log recovery. Therefore we can only + * check against maximum tree depth from those contexts. * - * Similarly, during log recovery we will have a perag structure - * attached, but the agf information will not yet have been initialised - * from the on disk AGF. Again, we can only check against maximum limits - * in this case. + * Otherwise check against the per-tree limit. Peek at one of the + * verifier magic values to determine the type of tree we're verifying + * against. */ level = be16_to_cpu(block->bb_level); - switch (block->bb_magic) { - case cpu_to_be32(XFS_ABTB_CRC_MAGIC): - fa = xfs_btree_sblock_v5hdr_verify(bp); - if (fa) - return fa; - /* fall through */ - case cpu_to_be32(XFS_ABTB_MAGIC): - if (pag && pag->pagf_init) { - if (level >= pag->pagf_levels[XFS_BTNUM_BNOi]) - return __this_address; - } else if (level >= mp->m_ag_maxlevels) + if (bp->b_ops->magic[0] == cpu_to_be32(XFS_ABTC_MAGIC)) + btnum = XFS_BTNUM_CNTi; + if (pag && pag->pagf_init) { + if (level >= pag->pagf_levels[btnum]) return __this_address; - break; - case cpu_to_be32(XFS_ABTC_CRC_MAGIC): - fa = xfs_btree_sblock_v5hdr_verify(bp); - if (fa) - return fa; - /* fall through */ - case cpu_to_be32(XFS_ABTC_MAGIC): - if (pag && pag->pagf_init) { - if (level >= pag->pagf_levels[XFS_BTNUM_CNTi]) - return __this_address; - } else if (level >= mp->m_ag_maxlevels) - return __this_address; - break; - default: + } else if (level >= mp->m_ag_maxlevels) return __this_address; - } return xfs_btree_sblock_verify(bp, mp->m_alloc_mxr[level != 0]); } @@ -379,6 +365,8 @@ xfs_allocbt_write_verify( const struct xfs_buf_ops xfs_bnobt_buf_ops = { .name = "xfs_bnobt", + .magic = { cpu_to_be32(XFS_ABTB_MAGIC), + cpu_to_be32(XFS_ABTB_CRC_MAGIC) }, .verify_read = xfs_allocbt_read_verify, .verify_write = xfs_allocbt_write_verify, .verify_struct = xfs_allocbt_verify, @@ -386,6 +374,8 @@ const struct xfs_buf_ops xfs_bnobt_buf_ops = { const struct xfs_buf_ops xfs_cntbt_buf_ops = { .name = "xfs_cntbt", + .magic = { cpu_to_be32(XFS_ABTC_MAGIC), + cpu_to_be32(XFS_ABTC_CRC_MAGIC) }, .verify_read = xfs_allocbt_read_verify, .verify_write = xfs_allocbt_write_verify, .verify_struct = xfs_allocbt_verify, |