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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>
This commit is contained in:
Akinobu Mita 2013-03-07 23:42:52 +09:00 committed by Steven Whitehouse
parent 57c7310b8e
commit 4146c3d469
1 changed files with 2 additions and 6 deletions
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8
fs/gfs2/lock_dlm.c
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@ -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)