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-rw-r--r--fs/ceph/caps.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 4615f2501e15..bdfec8978479 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -614,6 +614,7 @@ void ceph_add_cap(struct inode *inode,
struct ceph_cap *cap;
int mds = session->s_mds;
int actual_wanted;
+ u32 gen;
dout("add_cap %p mds%d cap %llx %s seq %d\n", inode,
session->s_mds, cap_id, ceph_cap_string(issued), seq);
@@ -625,6 +626,10 @@ void ceph_add_cap(struct inode *inode,
if (fmode >= 0)
wanted |= ceph_caps_for_mode(fmode);
+ spin_lock(&session->s_gen_ttl_lock);
+ gen = session->s_cap_gen;
+ spin_unlock(&session->s_gen_ttl_lock);
+
cap = __get_cap_for_mds(ci, mds);
if (!cap) {
cap = *new_cap;
@@ -650,7 +655,7 @@ void ceph_add_cap(struct inode *inode,
list_move_tail(&cap->session_caps, &session->s_caps);
spin_unlock(&session->s_cap_lock);
- if (cap->cap_gen < session->s_cap_gen)
+ if (cap->cap_gen < gen)
cap->issued = cap->implemented = CEPH_CAP_PIN;
/*
@@ -744,7 +749,7 @@ void ceph_add_cap(struct inode *inode,
cap->seq = seq;
cap->issue_seq = seq;
cap->mseq = mseq;
- cap->cap_gen = session->s_cap_gen;
+ cap->cap_gen = gen;
if (fmode >= 0)
__ceph_get_fmode(ci, fmode);