* [Cluster-devel] [PATCH resend] gfs2: use memchr_inv
@ 2013-03-07 14:42 Akinobu Mita
0 siblings, 0 replies; only message in thread
From: Akinobu Mita @ 2013-03-07 14:42 UTC (permalink / raw)
To: cluster-devel.redhat.com
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 at redhat.com
Cc: Christine Caulfield <ccaulfie@redhat.com>
Cc: David Teigland <teigland@redhat.com>
---
fs/gfs2/lock_dlm.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 9802de0..b56befa 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -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)
--
1.8.1.2
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