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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-11 09:09:02 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-11 09:09:02 +0100
commit9481caf39bf55a862067007ffc53621b4305a387 (patch)
treeed7d011557a7edd33839d4e0e2eeb57e901afcbe /fs/xfs/scrub/repair.c
parent344c0152d878922365464b7140c74c2a5e073d99 (diff)
parentd13937116f1e82bf508a6325111b322c30c85eb9 (diff)
Merge 5.0-rc6 into driver-core-next
We need the debugfs fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/xfs/scrub/repair.c')
-rw-r--r--fs/xfs/scrub/repair.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index 1c8eecfe52b8..6acf1bfa0bfe 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -768,18 +768,23 @@ xrep_findroot_block(
if (!uuid_equal(&btblock->bb_u.s.bb_uuid,
&mp->m_sb.sb_meta_uuid))
goto out;
+ /*
+ * Read verifiers can reference b_ops, so we set the pointer
+ * here. If the verifier fails we'll reset the buffer state
+ * to what it was before we touched the buffer.
+ */
+ bp->b_ops = fab->buf_ops;
fab->buf_ops->verify_read(bp);
if (bp->b_error) {
+ bp->b_ops = NULL;
bp->b_error = 0;
goto out;
}
/*
* Some read verifiers will (re)set b_ops, so we must be
- * careful not to blow away any such assignment.
+ * careful not to change b_ops after running the verifier.
*/
- if (!bp->b_ops)
- bp->b_ops = fab->buf_ops;
}
/*