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Commit 5a4c7334 authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: optimize _btree_query_all 



Don't bother wandering our way through the leaf nodes when the caller
issues a query_all; just zoom down the left side of the tree and walk
rightwards along level zero.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
parent 3d4b4a3e

fs/xfs/libxfs/xfs_btree.c

+7 −5
Original line number Diff line number Diff line
@@ -4849,12 +4849,14 @@ xfs_btree_query_all( 
	xfs_btree_query_range_fn	fn,

	void				*priv)

{

	union xfs_btree_irec		low_rec;

	union xfs_btree_irec		high_rec;

	union xfs_btree_key		low_key;

	union xfs_btree_key		high_key;



	memset(&cur->bc_rec, 0, sizeof(cur->bc_rec));

	memset(&low_key, 0, sizeof(low_key));

	memset(&high_key, 0xFF, sizeof(high_key));



	memset(&low_rec, 0, sizeof(low_rec));

	memset(&high_rec, 0xFF, sizeof(high_rec));

	return xfs_btree_query_range(cur, &low_rec, &high_rec, fn, priv);

	return xfs_btree_simple_query_range(cur, &low_key, &high_key, fn, priv);

}



/*