Commit 2a86b3e7 authored by Tejun Heo's avatar Tejun Heo Committed by Linus Torvalds
Browse files

dlm: convert to idr_alloc() 



Convert to the much saner new idr interface.  Error return values from
recover_idr_add() mix -1 and -errno.  The conversion doesn't change
that but it looks iffy.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent a1c36b16

fs/dlm/lock.c

+6 −12
Original line number Diff line number Diff line
@@ -1183,7 +1183,7 @@ static void detach_lkb(struct dlm_lkb *lkb) 
static int create_lkb(struct dlm_ls *ls, struct dlm_lkb **lkb_ret)

{

	struct dlm_lkb *lkb;

	int rv, id;

	int rv;



	lkb = dlm_allocate_lkb(ls);

	if (!lkb)
@@ -1199,19 +1199,13 @@ static int create_lkb(struct dlm_ls *ls, struct dlm_lkb **lkb_ret) 
	mutex_init(&lkb->lkb_cb_mutex);

	INIT_WORK(&lkb->lkb_cb_work, dlm_callback_work);



 retry:

	rv = idr_pre_get(&ls->ls_lkbidr, GFP_NOFS);

	if (!rv)

		return -ENOMEM;



	idr_preload(GFP_NOFS);

	spin_lock(&ls->ls_lkbidr_spin);

	rv = idr_get_new_above(&ls->ls_lkbidr, lkb, 1, &id);

	if (!rv)

		lkb->lkb_id = id;

	rv = idr_alloc(&ls->ls_lkbidr, lkb, 1, 0, GFP_NOWAIT);

	if (rv >= 0)

		lkb->lkb_id = rv;

	spin_unlock(&ls->ls_lkbidr_spin);



	if (rv == -EAGAIN)

		goto retry;

	idr_preload_end();



	if (rv < 0) {

		log_error(ls, "create_lkb idr error %d", rv);

fs/dlm/recover.c

+13 −14
Original line number Diff line number Diff line
@@ -305,27 +305,26 @@ static int recover_idr_empty(struct dlm_ls *ls) 
static int recover_idr_add(struct dlm_rsb *r)

{

	struct dlm_ls *ls = r->res_ls;

	int rv, id;



	rv = idr_pre_get(&ls->ls_recover_idr, GFP_NOFS);

	if (!rv)

		return -ENOMEM;

	int rv;



	idr_preload(GFP_NOFS);

	spin_lock(&ls->ls_recover_idr_lock);

	if (r->res_id) {

		spin_unlock(&ls->ls_recover_idr_lock);

		return -1;

		rv = -1;

		goto out_unlock;

	}

	rv = idr_get_new_above(&ls->ls_recover_idr, r, 1, &id);

	if (rv) {

		spin_unlock(&ls->ls_recover_idr_lock);

		return rv;

	}

	r->res_id = id;

	rv = idr_alloc(&ls->ls_recover_idr, r, 1, 0, GFP_NOWAIT);

	if (rv < 0)

		goto out_unlock;



	r->res_id = rv;

	ls->ls_recover_list_count++;

	dlm_hold_rsb(r);

	rv = 0;

out_unlock:

	spin_unlock(&ls->ls_recover_idr_lock);

	return 0;

	idr_preload_end();

	return rv;

}



static void recover_idr_del(struct dlm_rsb *r)