Local extended attributes store their values within the same leaf block.
There's no header for the values themselves, nor are they separately
checksummed. Hence we can save a bit of time in the attr scrubber by
not wasting time retrieving the values.
Regrettably, shortform attributes do not set XFS_ATTR_LOCAL so this
offers us no advantage there, but at least there are very few attrs in
that case.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
goto fail_xref;
}
+ /*
+ * Local xattr values are stored in the attr leaf block, so we don't
+ * need to retrieve the value from a remote block to detect corruption
+ * problems.
+ */
+ if (flags & XFS_ATTR_LOCAL)
+ goto fail_xref;
+
/*
* Try to allocate enough memory to extrat the attr value. If that
* doesn't work, we overload the seen_enough variable to convey