Commit b09d10df authored by Martin Brandenburg's avatar Martin Brandenburg Committed by Mike Marshall
Browse files

orangefs: Do not unref if there is no bufmap. 



Signed-off-by: default avatarMike Marshall <hubcap@omnibond.com>
Signed-off-by: default avatarMartin Brandenburg <martin@omnibond.com>
parent 765a75b3

fs/orangefs/orangefs-bufmap.c

+19 −8
Original line number Diff line number Diff line
@@ -82,21 +82,32 @@ static void orangefs_bufmap_unref(struct orangefs_bufmap *bufmap) 
	}

}



/*

 * XXX: Can the size and shift change while the caller gives up the 

 * XXX: lock between calling this and doing something useful?

 */



int orangefs_bufmap_size_query(void)

{

	struct orangefs_bufmap *bufmap = orangefs_bufmap_ref();

	int size = bufmap ? bufmap->desc_size : 0;



	struct orangefs_bufmap *bufmap;

	int size = 0;

	bufmap = orangefs_bufmap_ref();

	if (bufmap) {

		size = bufmap->desc_size;

		orangefs_bufmap_unref(bufmap);

	}

	return size;

}



int orangefs_bufmap_shift_query(void)

{

	struct orangefs_bufmap *bufmap = orangefs_bufmap_ref();

	int shift = bufmap ? bufmap->desc_shift : 0;



	struct orangefs_bufmap *bufmap;

	int shift = 0;

	bufmap = orangefs_bufmap_ref();

	if (bufmap) {

		shift = bufmap->desc_shift;

		orangefs_bufmap_unref(bufmap);

	}

	return shift;

}