From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:51612 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966003AbdJQThF (ORCPT ); Tue, 17 Oct 2017 15:37:05 -0400 From: Waiman Long To: Alexander Viro , Jan Kara , Jeff Layton , "J. Bruce Fields" , Tejun Heo , Christoph Lameter Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Ingo Molnar , Peter Zijlstra , Andi Kleen , Dave Chinner , Boqun Feng , Davidlohr Bueso , Waiman Long Subject: [PATCH v7 8/9] lib/dlock-list: Export symbols and add warnings Date: Tue, 17 Oct 2017 15:36:35 -0400 Message-Id: <1508268996-8959-1-git-send-email-longman@redhat.com> In-Reply-To: <1507229008-20569-1-git-send-email-longman@redhat.com> References: <1507229008-20569-1-git-send-email-longman@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: The EXPORT_SYMBOL() macro is now used in lib/dlock-list.c to enable kernel modules to use dlock-list. Some warning messages are also added. Signed-off-by: Waiman Long --- lib/dlock-list.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/lib/dlock-list.c b/lib/dlock-list.c index 4fded20..6ce5c7193 100644 --- a/lib/dlock-list.c +++ b/lib/dlock-list.c @@ -132,6 +132,7 @@ int alloc_dlock_list_heads(struct dlock_list_heads *dlist, int irqsafe) } return 0; } +EXPORT_SYMBOL(alloc_dlock_list_heads); /** * free_dlock_list_heads - Free all the heads entries of the dlock list @@ -145,6 +146,7 @@ void free_dlock_list_heads(struct dlock_list_heads *dlist) kfree(dlist->heads); dlist->heads = NULL; } +EXPORT_SYMBOL(free_dlock_list_heads); /** * dlock_lists_empty - Check if all the dlock lists are empty @@ -159,11 +161,15 @@ bool dlock_lists_empty(struct dlock_list_heads *dlist) { int idx; + /* Shouldn't be called before nr_dlock_lists is initialized */ + WARN_ON_ONCE(!nr_dlock_lists); + for (idx = 0; idx < nr_dlock_lists; idx++) if (!list_empty(&dlist->heads[idx].list)) return false; return true; } +EXPORT_SYMBOL(dlock_lists_empty); /** * dlock_list_hash - Hash the given context to a particular list @@ -187,6 +193,7 @@ struct dlock_list_head *dlock_list_hash(struct dlock_list_heads *dlist, % nr_dlock_lists; return &dlist->heads[hash]; } +EXPORT_SYMBOL(dlock_list_hash); /** * dlock_list_add - Add a node to a particular head of dlock list @@ -210,6 +217,7 @@ void dlock_list_add(struct dlock_list_node *node, spin_unlock(&head->lock); } } +EXPORT_SYMBOL(dlock_list_add); /** * dlock_lists_add - Adds a node to the given dlock list @@ -226,6 +234,7 @@ void dlock_lists_add(struct dlock_list_node *node, dlock_list_add(node, head); } +EXPORT_SYMBOL(dlock_lists_add); /** * dlock_lists_del - Delete a node from a dlock list @@ -273,6 +282,7 @@ void dlock_lists_del(struct dlock_list_node *node) spin_unlock(&head->lock); } while (retry); } +EXPORT_SYMBOL(dlock_lists_del); /** * __dlock_list_next_list: Find the first entry of the next available list @@ -287,6 +297,9 @@ struct dlock_list_node *__dlock_list_next_list(struct dlock_list_iter *iter) struct dlock_list_node *next; struct dlock_list_head *head; + /* Shouldn't be called before nr_dlock_lists is initialized */ + WARN_ON_ONCE(!nr_dlock_lists); + restart: if (iter->entry) { dlock_list_unlock(iter); @@ -320,3 +333,4 @@ struct dlock_list_node *__dlock_list_next_list(struct dlock_list_iter *iter) return next; } +EXPORT_SYMBOL(__dlock_list_next_list); -- 1.8.3.1