nfsd4: add helper function for lease setup (22d38c4c) · Commits · e / devices / android_kernel_oneplus_sm7250

fs/nfsd/nfs4state.c

+21 −12

Original line number	Diff line number	Diff line
		@@ -2639,6 +2639,26 @@ static bool nfsd4_cb_channel_good(struct nfs4_client *clp)
		return clp->cl_minorversion && clp->cl_cb_state == NFSD4_CB_UNKNOWN;
		}

		static struct file_lock nfs4_alloc_init_lease(struct nfs4_delegation dp, int flag)
		{
		struct file_lock *fl;

		fl = locks_alloc_lock();
		if (!fl)
		return NULL;
		locks_init_lock(fl);
		fl->fl_lmops = &nfsd_lease_mng_ops;
		fl->fl_flags = FL_LEASE;
		fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
		fl->fl_end = OFFSET_MAX;
		fl->fl_owner = (fl_owner_t)dp;
		fl->fl_file = dp->dl_vfs_file;
		BUG_ON(!fl->fl_file);
		fl->fl_pid = current->tgid;
		dp->dl_flock = fl;
		return fl;
		}

		/*
		* Attempt to hand out a delegation.
		*/
		@@ -2684,20 +2704,9 @@ nfs4_open_delegation(struct svc_fh fh, struct nfsd4_open open, struct nfs4_sta
		goto out;
		}
		status = -ENOMEM;
		fl = locks_alloc_lock();
		fl = nfs4_alloc_init_lease(dp, flag);
		if (!fl)
		goto out;
		locks_init_lock(fl);
		fl->fl_lmops = &nfsd_lease_mng_ops;
		fl->fl_flags = FL_LEASE;
		fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
		fl->fl_end = OFFSET_MAX;
		fl->fl_owner = (fl_owner_t)dp;
		fl->fl_file = find_readable_file(stp->st_file);
		BUG_ON(!fl->fl_file);
		fl->fl_pid = current->tgid;
		dp->dl_flock = fl;

		/* vfs_setlease checks to see if delegation should be handed out.
		* the lock_manager callback fl_change is used
		*/