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NFSD: Get reference of lockowner when coping file_lock 

v5: using nfs4_get_stateowner() instead of an inline function
v3: Update based on Jeff's comments
v2: Fix bad using of struct file_lock_operations for handle the owner

Acked-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
This commit is contained in:
Kinglong Mee 2014-08-22 10:18:44 -04:00 committed by Jeff Layton
parent b5971afa0b
commit aef9583b23
1 changed files with 21 additions and 4 deletions
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25
fs/nfsd/nfs4state.c
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@ -4876,9 +4876,25 @@ nfs4_transform_lock_offset(struct file_lock *lock)
lock->fl_end = OFFSET_MAX;
}
/* Hack!: For now, we're defining this just so we can use a pointer to it
* as a unique cookie to identify our (NFSv4's) posix locks. */
static void nfsd4_fl_get_owner(struct file_lock *dst, struct file_lock *src)
{
struct nfs4_lockowner *lo = (struct nfs4_lockowner *)src->fl_owner;
dst->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lo->lo_owner));
}
static void nfsd4_fl_put_owner(struct file_lock *fl)
{
struct nfs4_lockowner *lo = (struct nfs4_lockowner *)fl->fl_owner;
if (lo) {
nfs4_put_stateowner(&lo->lo_owner);
fl->fl_owner = NULL;
}
}
static const struct lock_manager_operations nfsd_posix_mng_ops = {
.lm_get_owner = nfsd4_fl_get_owner,
.lm_put_owner = nfsd4_fl_put_owner,
};
static inline void
@ -5243,7 +5259,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = nfserr_openmode;
goto out;
}
file_lock->fl_owner = (fl_owner_t)lock_sop;
file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lock_sop->lo_owner));
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;
@ -5439,7 +5456,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
}
file_lock->fl_type = F_UNLCK;
file_lock->fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(stp->st_stateowner));
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;