linux-kernel - [PATCH] KVM: set no_llseek in stat_fops_per

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Message-Id: <ad61d4443d93fcfb442bd6367eefde3e04201bef.1493801155.git.geliangtang@gmail.com>
Date:   Sat,  6 May 2017 23:37:19 +0800
From:   Geliang Tang <geliangtang@...il.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>
Cc:     Geliang Tang <geliangtang@...il.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] KVM: set no_llseek in stat_fops_per_vm

In vm_stat_get_per_vm_fops and vcpu_stat_get_per_vm_fops, since we
use nonseekable_open() to open, we should use no_llseek() to seek,
not generic_file_llseek().

Signed-off-by: Geliang Tang <geliangtang@...il.com>
---
 virt/kvm/kvm_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c2bb6ab..798f567 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3689,7 +3689,7 @@ static const struct file_operations vm_stat_get_per_vm_fops = {
 	.release = kvm_debugfs_release,
 	.read    = simple_attr_read,
 	.write   = simple_attr_write,
-	.llseek  = generic_file_llseek,
+	.llseek  = no_llseek,
 };
 
 static int vcpu_stat_get_per_vm(void *data, u64 *val)
@@ -3734,7 +3734,7 @@ static const struct file_operations vcpu_stat_get_per_vm_fops = {
 	.release = kvm_debugfs_release,
 	.read    = simple_attr_read,
 	.write   = simple_attr_write,
-	.llseek  = generic_file_llseek,
+	.llseek  = no_llseek,
 };
 
 static const struct file_operations *stat_fops_per_vm[] = {
-- 
2.9.3