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ceph: invalidate affected dentry leases on aborted requests

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If we abort a request, we return to caller, but the request may still
complete.  And if we hold the dir FILE_EXCL bit, we may not release a
lease when sending a request.  A simple un-tar, control-c, un-tar again
will reproduce the bug (manifested as a 'Cannot open: File exists').

Ensure we invalidate affected dentry leases (as well dir I_COMPLETE) so
we don't have valid (but incorrect) leases.  Do the same, consistently, at
other sites where I_COMPLETE is similarly cleared.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil
2010-05-14 09:35:38 -07:00
parent b4556396fa
commit 81a6cf2d30
4 changed files with 29 additions and 5 deletions
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1
fs/ceph/super.h
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@@ -871,6 +871,7 @@ extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
extern void ceph_dentry_lru_add(struct dentry *dn);
extern void ceph_dentry_lru_touch(struct dentry *dn);
extern void ceph_dentry_lru_del(struct dentry *dn);
extern void ceph_invalidate_dentry_lease(struct dentry *dentry);
/*
* our d_ops vary depending on whether the inode is live,