Commit 4146c3d4 authored Mar 07, 2013 by Akinobu Mita Committed by Steven Whitehouse Apr 04, 2013

GFS2: use memchr_inv



Use memchr_inv to verify that the specified memory range is cleared.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: cluster-devel@redhat.com
Cc: Christine Caulfield <ccaulfie@redhat.com>
Cc: David Teigland <teigland@redhat.com>

parent 57c7310b

fs/gfs2/lock_dlm.c

+2 −6

Original line number	Diff line number	Diff line
		@@ -483,12 +483,8 @@ static void control_lvb_write(struct lm_lockstruct *ls, uint32_t lvb_gen,

		static int all_jid_bits_clear(char *lvb)
		{
		int i;
		for (i = JID_BITMAP_OFFSET; i < GDLM_LVB_SIZE; i++) {
		if (lvb[i])
		return 0;
		}
		return 1;
		return !memchr_inv(lvb + JID_BITMAP_OFFSET, 0,
		GDLM_LVB_SIZE - JID_BITMAP_OFFSET);
		}

		static void sync_wait_cb(void *arg)