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ceph: don't reset s_cap_ttl to zero 

Avoid the need to check for a special zero s_cap_ttl value by just
using (jiffies - 1) as the value assigned to indicate "sometime in
the past."

Signed-off-by: Alex Elder <elder@dreamhost.com>
Reviewed-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Alex Elder 2012-01-12 17:48:11 -08:00
parent 182fac2689
commit 1ce208a6ce
1 changed files with 3 additions and 4 deletions
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7
fs/ceph/mds_client.c
View File

@ -402,7 +402,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
spin_lock_init(&s->s_gen_ttl_lock);
s->s_cap_gen = 0;
s->s_cap_ttl = 0;
s->s_cap_ttl = jiffies - 1;
spin_lock_init(&s->s_cap_lock);
s->s_renew_requested = 0;
@ -1083,8 +1083,7 @@ static void renewed_caps(struct ceph_mds_client *mdsc,
int wake = 0;
spin_lock(&session->s_cap_lock);
was_stale = is_renew && (session->s_cap_ttl == 0 ||
time_after_eq(jiffies, session->s_cap_ttl));
was_stale = is_renew && time_after_eq(jiffies, session->s_cap_ttl);
session->s_cap_ttl = session->s_renew_requested +
mdsc->mdsmap->m_session_timeout*HZ;
@ -2332,7 +2331,7 @@ static void handle_session(struct ceph_mds_session *session,
session->s_mds);
spin_lock(&session->s_gen_ttl_lock);
session->s_cap_gen++;
session->s_cap_ttl = 0;
session->s_cap_ttl = jiffies - 1;
spin_unlock(&session->s_gen_ttl_lock);
send_renew_caps(mdsc, session);
break;