Author: Markus Elfring <elfring@users.sourceforge.net> The vfree() function performs input parameter validation. Thus the NULL pointer test around vfree() calls is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Signed-off-by: Mike Snitzer — drivers/md/dm-snap-persistent.c | 14 ++++———- 1 file changed, 4 insertions(+), 10 deletions(-) diff –git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c index …