Commit d8e93e3f authored Feb 27, 2020 by Matthew Wilcox (Oracle)

XArray: Optimise xas_sibling() if !CONFIG_XARRAY_MULTI



If CONFIG_XARRAY_MULTI is disabled, then xas_sibling() must be false.

Reported-by: JaeJoon Jung <rgbi3307@gmail.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

parent 3a00e7c4

lib/xarray.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1836,7 +1836,7 @@ static bool xas_sibling(struct xa_state *xas)
		struct xa_node *node = xas->xa_node;
		unsigned long mask;

		if (!node)
		if (!IS_ENABLED(CONFIG_XARRAY_MULTI) \|\| !node)
		return false;
		mask = (XA_CHUNK_SIZE << node->shift) - 1;
		return (xas->xa_index & mask) >

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