Messages in this thread Patch in this message | | | From | Steven Whitehouse <> | Subject | [PATCH 2/6] GFS2: use memchr_inv | Date | Fri, 5 Apr 2013 10:57:12 +0100 |
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From: Akinobu Mita <akinobu.mita@gmail.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@redhat.com Cc: Christine Caulfield <ccaulfie@redhat.com> Cc: David Teigland <teigland@redhat.com>
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index b15bb45..c8423d6 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) -- 1.7.4
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