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ref counting for nfs41_open_state

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This commit is contained in:
Olga Kornievskaia 2010-10-27 16:18:12 -04:00
parent ae4c67c21e
commit 006bdfa47a
10 changed files with 78 additions and 5 deletions
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15
daemon/nfs41.h
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@ -72,6 +72,12 @@ typedef struct __nfs41_lock_state {
SRWLOCK lock;
} nfs41_lock_state;
/* nfs41_open_state reference counting:
* one reference is held implicitly by the driver (initialized to 1 on
* OPEN and released on CLOSE). other references must be held during
* upcalls to prevent a parallel CLOSE from freeing it prematurely. by
* calling upcall_open_state_ref() when parsing the upcall, you are
* guaranteed a matching dereference on upcall_cleanup() */
typedef struct __nfs41_open_state {
nfs41_abs_path path;
nfs41_path_fh parent;
@ -85,6 +91,7 @@ typedef struct __nfs41_open_state {
nfs41_lock_state last_lock;
struct __pnfs_file_layout *layout;
SRWLOCK lock;
LONG ref_count;
} nfs41_open_state;
typedef struct __nfs41_rpc_clnt {
@ -355,4 +362,12 @@ static __inline netaddr4* nfs41_rpc_netaddr(
bool_t nfs41_renew_in_progress(nfs41_client *client, bool_t *value);
/* open.c */
void nfs41_open_state_ref(
IN nfs41_open_state *state);
void nfs41_open_state_deref(
IN nfs41_open_state *state);
#endif /* __NFS41__ */