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authorPaolo Bonzini <pbonzini@redhat.com>2022-02-05 00:58:25 -0500
committerPaolo Bonzini <pbonzini@redhat.com>2022-02-05 00:58:25 -0500
commit7e6a6b400db8048bd1c06e497e338388413cf5bc (patch)
tree794f9fcdc7a1bfb9a2812e90fc76809d810203b2 /include/linux/xarray.h
parent6e37ec8825a113bc2dd1b280be10e5ac6eb4f6b1 (diff)
parent1dd498e5e26ad71e3e9130daf72cfb6a693fee03 (diff)
Merge tag 'kvmarm-fixes-5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 5.17, take #2 - A couple of fixes when handling an exception while a SError has been delivered - Workaround for Cortex-A510's single-step[ erratum
Diffstat (limited to 'include/linux/xarray.h')
-rw-r--r--include/linux/xarray.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/xarray.h b/include/linux/xarray.h
index a91e3d90df8a..d6d5da6ed735 100644
--- a/include/linux/xarray.h
+++ b/include/linux/xarray.h
@@ -1581,6 +1581,24 @@ static inline void xas_set(struct xa_state *xas, unsigned long index)
}
/**
+ * xas_advance() - Skip over sibling entries.
+ * @xas: XArray operation state.
+ * @index: Index of last sibling entry.
+ *
+ * Move the operation state to refer to the last sibling entry.
+ * This is useful for loops that normally want to see sibling
+ * entries but sometimes want to skip them. Use xas_set() if you
+ * want to move to an index which is not part of this entry.
+ */
+static inline void xas_advance(struct xa_state *xas, unsigned long index)
+{
+ unsigned char shift = xas_is_node(xas) ? xas->xa_node->shift : 0;
+
+ xas->xa_index = index;
+ xas->xa_offset = (index >> shift) & XA_CHUNK_MASK;
+}
+
+/**
* xas_set_order() - Set up XArray operation state for a multislot entry.
* @xas: XArray operation state.
* @index: Target of the operation.