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kvm eventfd: switch to fdget

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-08-30 15:47:17 -04:00
parent 70abadedab
commit cffe78d92c
1 changed files with 10 additions and 10 deletions
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20
virt/kvm/eventfd.c
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@ -291,7 +291,7 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)
{ {
struct kvm_irq_routing_table *irq_rt; struct kvm_irq_routing_table *irq_rt;
struct _irqfd *irqfd, *tmp; struct _irqfd *irqfd, *tmp;
struct file *file = NULL; struct fd f;
struct eventfd_ctx *eventfd = NULL, *resamplefd = NULL; struct eventfd_ctx *eventfd = NULL, *resamplefd = NULL;
int ret; int ret;
unsigned int events; unsigned int events;
@ -306,13 +306,13 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)
INIT_WORK(&irqfd->inject, irqfd_inject); INIT_WORK(&irqfd->inject, irqfd_inject);
INIT_WORK(&irqfd->shutdown, irqfd_shutdown); INIT_WORK(&irqfd->shutdown, irqfd_shutdown);
file = eventfd_fget(args->fd); f = fdget(args->fd);
if (IS_ERR(file)) { if (!f.file) {
ret = PTR_ERR(file); ret = -EBADF;
goto fail; goto out;
} }
eventfd = eventfd_ctx_fileget(file); eventfd = eventfd_ctx_fileget(f.file);
if (IS_ERR(eventfd)) { if (IS_ERR(eventfd)) {
ret = PTR_ERR(eventfd); ret = PTR_ERR(eventfd);
goto fail; goto fail;
@ -391,7 +391,7 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)
lockdep_is_held(&kvm->irqfds.lock)); lockdep_is_held(&kvm->irqfds.lock));
irqfd_update(kvm, irqfd, irq_rt); irqfd_update(kvm, irqfd, irq_rt);
events = file->f_op->poll(file, &irqfd->pt); events = f.file->f_op->poll(f.file, &irqfd->pt);
list_add_tail(&irqfd->list, &kvm->irqfds.items); list_add_tail(&irqfd->list, &kvm->irqfds.items);
@ -408,7 +408,7 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)
* do not drop the file until the irqfd is fully initialized, otherwise * do not drop the file until the irqfd is fully initialized, otherwise
* we might race against the POLLHUP * we might race against the POLLHUP
*/ */
fput(file); fdput(f);
return 0; return 0;
@ -422,9 +422,9 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)
if (eventfd && !IS_ERR(eventfd)) if (eventfd && !IS_ERR(eventfd))
eventfd_ctx_put(eventfd); eventfd_ctx_put(eventfd);
if (!IS_ERR(file)) fdput(f);
fput(file);
out:
kfree(irqfd); kfree(irqfd);
return ret; return ret;
} }