From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kinglong Mee Subject: [PATCH 6/6 v5] NFSD: Get reference of lockowner when coping file_lock Date: Wed, 20 Aug 2014 17:59:33 +0800 Message-ID: <53F47185.2070301@gmail.com> References: <53BAAAC5.9000106@gmail.com> <53E22EA5.70708@gmail.com> <20140809065112.700e0ecc@tlielax.poochiereds.net> <53E791F1.40802@gmail.com> <53ED5093.6000308@gmail.com> <53F36CB5.2030707@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: "J. Bruce Fields" , Linux NFS Mailing List , Trond Myklebust , linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kinglongmee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org To: Jeff Layton Return-path: In-Reply-To: <53F36CB5.2030707-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-nfs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-fsdevel.vger.kernel.org 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 Signed-off-by: Kinglong Mee --- fs/nfsd/nfs4state.c | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index e087a71..fd5ff4b 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4869,9 +4869,25 @@ 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 @@ -5236,7 +5252,8 @@ 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; @@ -5432,7 +5449,7 @@ 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; -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html