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ceph: avoid calling ceph_renew_caps() infinitely

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__ceph_caps_mds_wanted() ignores caps from stale session. So the
return value of __ceph_caps_mds_wanted() can keep the same across
ceph_renew_caps(). This causes try_get_cap_refs() to keep calling
ceph_renew_caps(). The fix is ignore the session valid check for
the try_get_cap_refs() case. If session is stale, just let the
caps requester sleep.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng
2017-01-29 22:15:47 +08:00
committed by Ilya Dryomov
parent 00f06cba53
commit c1944fedd8
3 changed files with 5 additions and 5 deletions
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2
fs/ceph/super.h
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@@ -602,7 +602,7 @@ static inline int __ceph_caps_wanted(struct ceph_inode_info *ci)
}
/* what the mds thinks we want */
extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci);
extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check);
extern void ceph_caps_init(struct ceph_mds_client *mdsc);
extern void ceph_caps_finalize(struct ceph_mds_client *mdsc);