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author | Darrick J. Wong <darrick.wong@oracle.com> | 2019-02-04 01:03:59 +0300 |
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committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-02-04 01:03:59 +0300 |
commit | add46b3b021263c02d5a7080c58e5b459479fafd (patch) | |
tree | ae5e6d00b63a34057f1014f7968e942cbfd4c42a /fs/ioctl.c | |
parent | 465fa17f4a303d9fdff9eac4d45f91ece92e96ca (diff) | |
download | linux-add46b3b021263c02d5a7080c58e5b459479fafd.tar.xz |
xfs: set buffer ops when repair probes for btree type
In xrep_findroot_block, we work out the btree type and correctness of a
given block by calling different btree verifiers on root block
candidates. However, we leave the NULL b_ops while ->verify_read
validates the block, which means that if the verifier calls
xfs_buf_verifier_error it'll crash on the null b_ops. Fix it to set
b_ops before calling the verifier and unsetting it if the verifier
fails.
Furthermore, improve the documentation around xfs_buf_ensure_ops, which
is the function that is responsible for cleaning up the b_ops state of
buffers that go through xrep_findroot_block but don't match anything.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Diffstat (limited to 'fs/ioctl.c')
0 files changed, 0 insertions, 0 deletions