From: Dave Chinner <david@fromorbit.com>
To: xfs@oss.sgi.com
Subject: [PATCH] xfs: remove redundant checks from xfs_da_read_buf
Date: Sat, 17 May 2014 09:01:28 +1000 [thread overview]
Message-ID: <1400281288-30652-1-git-send-email-david@fromorbit.com> (raw)
From: Dave Chinner <dchinner@redhat.com>
All of the verification checks of magic numbers are now done by
verifiers, so ther eis no need to check them again once the buffer
has been successfully read. If the magic number is bad, it won't
even get to that code to verify it so it really serves no purpose at
all anymore. Remove it.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
fs/xfs/xfs_da_btree.c | 41 -----------------------------------------
1 file changed, 41 deletions(-)
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
index 9eec594..4db5102 100644
--- a/fs/xfs/xfs_da_btree.c
+++ b/fs/xfs/xfs_da_btree.c
@@ -2624,47 +2624,6 @@ xfs_da_read_buf(
xfs_buf_set_ref(bp, XFS_ATTR_BTREE_REF);
else
xfs_buf_set_ref(bp, XFS_DIR_BTREE_REF);
-
- /*
- * This verification code will be moved to a CRC verification callback
- * function so just leave it here unchanged until then.
- */
- {
- xfs_dir2_data_hdr_t *hdr = bp->b_addr;
- xfs_dir2_free_t *free = bp->b_addr;
- xfs_da_blkinfo_t *info = bp->b_addr;
- uint magic, magic1;
- struct xfs_mount *mp = dp->i_mount;
-
- magic = be16_to_cpu(info->magic);
- magic1 = be32_to_cpu(hdr->magic);
- if (unlikely(
- XFS_TEST_ERROR((magic != XFS_DA_NODE_MAGIC) &&
- (magic != XFS_DA3_NODE_MAGIC) &&
- (magic != XFS_ATTR_LEAF_MAGIC) &&
- (magic != XFS_ATTR3_LEAF_MAGIC) &&
- (magic != XFS_DIR2_LEAF1_MAGIC) &&
- (magic != XFS_DIR3_LEAF1_MAGIC) &&
- (magic != XFS_DIR2_LEAFN_MAGIC) &&
- (magic != XFS_DIR3_LEAFN_MAGIC) &&
- (magic1 != XFS_DIR2_BLOCK_MAGIC) &&
- (magic1 != XFS_DIR3_BLOCK_MAGIC) &&
- (magic1 != XFS_DIR2_DATA_MAGIC) &&
- (magic1 != XFS_DIR3_DATA_MAGIC) &&
- (free->hdr.magic !=
- cpu_to_be32(XFS_DIR2_FREE_MAGIC)) &&
- (free->hdr.magic !=
- cpu_to_be32(XFS_DIR3_FREE_MAGIC)),
- mp, XFS_ERRTAG_DA_READ_BUF,
- XFS_RANDOM_DA_READ_BUF))) {
- trace_xfs_da_btree_corrupt(bp, _RET_IP_);
- XFS_CORRUPTION_ERROR("xfs_da_do_buf(2)",
- XFS_ERRLEVEL_LOW, mp, info);
- error = XFS_ERROR(EFSCORRUPTED);
- xfs_trans_brelse(trans, bp);
- goto out_free;
- }
- }
*bpp = bp;
out_free:
if (mapp != &map)
--
1.9.0
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next reply other threads:[~2014-05-16 23:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-16 23:01 Dave Chinner [this message]
2014-05-17 11:54 ` [PATCH] xfs: remove redundant checks from xfs_da_read_buf Christoph Hellwig
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