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nfsd4: match close replays on stateid, not open owner id

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Keep around an unhashed copy of the final stateid after the last close
using an openowner, and when identifying a replay, match against that
stateid instead of just against the open owner id.  Free it the next
time the seqid is bumped or the stateowner is destroyed.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields
2011-09-16 17:42:48 -04:00
parent dad1c067eb
commit 38c387b52d
3 changed files with 44 additions and 7 deletions
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3
fs/nfsd/state.h
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@@ -370,8 +370,10 @@ struct nfs4_openowner {
struct nfs4_stateowner oo_owner; /* must be first field */
struct list_head oo_perclient;
struct list_head oo_close_lru; /* tail queue */
struct nfs4_ol_stateid *oo_last_closed_stid;
time_t oo_time; /* time of placement on so_close_lru */
#define NFS4_OO_CONFIRMED 1
#define NFS4_OO_PURGE_CLOSE 2
unsigned char oo_flags;
};
@@ -514,5 +516,6 @@ extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
extern void release_session_client(struct nfsd4_session *);
extern __be32 nfs4_validate_stateid(stateid_t *, bool);
extern void nfsd4_purge_closed_stateid(struct nfs4_stateowner *);
#endif /* NFSD4_STATE_H */