linux-kernel - [PATCH v2 2/2] kvm/eventfd: use list_for_each

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Date:   Tue,  7 Feb 2023 20:37:13 +0800
From:   Wei Wang <wei.w.wang@...el.com>
To:     pbonzini@...hat.com, seanjc@...gle.com, mhal@...x.co
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Wei Wang <wei.w.wang@...el.com>
Subject: [PATCH v2 2/2] kvm/eventfd: use list_for_each_entry when deassign ioeventfd

Simpify kvm_deassign_ioeventfd_idx to use list_for_each_entry as the
loop just ends at the entry that's founded and deleted.

Signed-off-by: Wei Wang <wei.w.wang@...el.com>
---
 virt/kvm/eventfd.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 1b277afb545b..2b56a3c81957 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -868,7 +868,7 @@ static int
 kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,
 			   struct kvm_ioeventfd *args)
 {
-	struct _ioeventfd        *p, *tmp;
+	struct _ioeventfd        *p;
 	struct eventfd_ctx       *eventfd;
 	struct kvm_io_bus	 *bus;
 	int                       ret = -ENOENT;
@@ -882,8 +882,7 @@ kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,
 
 	mutex_lock(&kvm->slots_lock);
 
-	list_for_each_entry_safe(p, tmp, &kvm->ioeventfds, list) {
-
+	list_for_each_entry(p, &kvm->ioeventfds, list) {
 		if (p->bus_idx != bus_idx ||
 		    p->eventfd != eventfd  ||
 		    p->addr != args->addr  ||
-- 
2.27.0