MODULE_ALIAS_MISCDEV(FUSE_MINOR);
-static kmem_cache_t *fuse_req_cachep;
+static struct kmem_cache *fuse_req_cachep;
static struct fuse_conn *fuse_get_conn(struct file *file)
{
struct fuse_req *fuse_request_alloc(void)
{
- struct fuse_req *req = kmem_cache_alloc(fuse_req_cachep, SLAB_KERNEL);
+ struct fuse_req *req = kmem_cache_alloc(fuse_req_cachep, GFP_KERNEL);
if (req)
fuse_request_init(req);
return req;
struct fuse_file *ff = file->private_data;
do {
- wait_event(fc->blocked_waitq, ff->reserved_req);
+ wait_event(fc->reserved_req_waitq, ff->reserved_req);
spin_lock(&fc->lock);
if (ff->reserved_req) {
req = ff->reserved_req;
fuse_request_init(req);
BUG_ON(ff->reserved_req);
ff->reserved_req = req;
- wake_up(&fc->blocked_waitq);
+ wake_up_all(&fc->reserved_req_waitq);
spin_unlock(&fc->lock);
fput(file);
}
fc->blocked = 0;
wake_up_all(&fc->blocked_waitq);
}
+ if (fc->num_background == FUSE_CONGESTION_THRESHOLD) {
+ clear_bdi_congested(&fc->bdi, READ);
+ clear_bdi_congested(&fc->bdi, WRITE);
+ }
fc->num_background--;
}
spin_unlock(&fc->lock);
- dput(req->dentry);
- mntput(req->vfsmount);
- if (req->file)
- fput(req->file);
wake_up(&req->waitq);
if (end)
end(fc, req);
queue_interrupt(fc, req);
}
- if (req->force) {
- spin_unlock(&fc->lock);
- wait_event(req->waitq, req->state == FUSE_REQ_FINISHED);
- spin_lock(&fc->lock);
- } else {
+ if (!req->force) {
sigset_t oldset;
/* Only fatal signals may interrupt this */
block_sigs(&oldset);
wait_answer_interruptible(fc, req);
restore_sigs(&oldset);
+
+ if (req->aborted)
+ goto aborted;
+ if (req->state == FUSE_REQ_FINISHED)
+ return;
+
+ /* Request is not yet in userspace, bail out */
+ if (req->state == FUSE_REQ_PENDING) {
+ list_del(&req->list);
+ __fuse_put_request(req);
+ req->out.h.error = -EINTR;
+ return;
+ }
}
- if (req->aborted)
- goto aborted;
- if (req->state == FUSE_REQ_FINISHED)
- return;
+ /*
+ * Either request is already in userspace, or it was forced.
+ * Wait it out.
+ */
+ spin_unlock(&fc->lock);
+ wait_event(req->waitq, req->state == FUSE_REQ_FINISHED);
+ spin_lock(&fc->lock);
- req->out.h.error = -EINTR;
- req->aborted = 1;
+ if (!req->aborted)
+ return;
aborted:
+ BUG_ON(req->state != FUSE_REQ_FINISHED);
if (req->locked) {
/* This is uninterruptible sleep, because data is
being copied to/from the buffers of req. During
wait_event(req->waitq, !req->locked);
spin_lock(&fc->lock);
}
- if (req->state == FUSE_REQ_PENDING) {
- list_del(&req->list);
- __fuse_put_request(req);
- } else if (req->state == FUSE_REQ_SENT) {
- spin_unlock(&fc->lock);
- wait_event(req->waitq, req->state == FUSE_REQ_FINISHED);
- spin_lock(&fc->lock);
- }
}
static unsigned len_args(unsigned numargs, struct fuse_arg *args)
fc->num_background++;
if (fc->num_background == FUSE_MAX_BACKGROUND)
fc->blocked = 1;
+ if (fc->num_background == FUSE_CONGESTION_THRESHOLD) {
+ set_bdi_congested(&fc->bdi, READ);
+ set_bdi_congested(&fc->bdi, WRITE);
+ }
queue_request(fc, req);
spin_unlock(&fc->lock);
* request_end(). Otherwise add it to the processing list, and set
* the 'sent' flag.
*/
-static ssize_t fuse_dev_readv(struct file *file, const struct iovec *iov,
- unsigned long nr_segs, loff_t *off)
+static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t pos)
{
int err;
struct fuse_req *req;
struct fuse_in *in;
struct fuse_copy_state cs;
unsigned reqsize;
+ struct file *file = iocb->ki_filp;
struct fuse_conn *fc = fuse_get_conn(file);
if (!fc)
return -EPERM;
fuse_copy_finish(&cs);
spin_lock(&fc->lock);
req->locked = 0;
- if (!err && req->aborted)
- err = -ENOENT;
+ if (req->aborted) {
+ request_end(fc, req);
+ return -ENODEV;
+ }
if (err) {
- if (!req->aborted)
- req->out.h.error = -EIO;
+ req->out.h.error = -EIO;
request_end(fc, req);
return err;
}
return err;
}
-static ssize_t fuse_dev_read(struct file *file, char __user *buf,
- size_t nbytes, loff_t *off)
-{
- struct iovec iov;
- iov.iov_len = nbytes;
- iov.iov_base = buf;
- return fuse_dev_readv(file, &iov, 1, off);
-}
-
/* Look up request on processing list by unique ID */
static struct fuse_req *request_find(struct fuse_conn *fc, u64 unique)
{
* it from the list and copy the rest of the buffer to the request.
* The request is finished by calling request_end()
*/
-static ssize_t fuse_dev_writev(struct file *file, const struct iovec *iov,
- unsigned long nr_segs, loff_t *off)
+static ssize_t fuse_dev_write(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t pos)
{
int err;
unsigned nbytes = iov_length(iov, nr_segs);
struct fuse_req *req;
struct fuse_out_header oh;
struct fuse_copy_state cs;
- struct fuse_conn *fc = fuse_get_conn(file);
+ struct fuse_conn *fc = fuse_get_conn(iocb->ki_filp);
if (!fc)
return -EPERM;
return err;
}
-static ssize_t fuse_dev_write(struct file *file, const char __user *buf,
- size_t nbytes, loff_t *off)
-{
- struct iovec iov;
- iov.iov_len = nbytes;
- iov.iov_base = (char __user *) buf;
- return fuse_dev_writev(file, &iov, 1, off);
-}
-
static unsigned fuse_dev_poll(struct file *file, poll_table *wait)
{
unsigned mask = POLLOUT | POLLWRNORM;
const struct file_operations fuse_dev_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .read = fuse_dev_read,
- .readv = fuse_dev_readv,
- .write = fuse_dev_write,
- .writev = fuse_dev_writev,
+ .read = do_sync_read,
+ .aio_read = fuse_dev_read,
+ .write = do_sync_write,
+ .aio_write = fuse_dev_write,
.poll = fuse_dev_poll,
.release = fuse_dev_release,
.fasync = fuse_dev_fasync,
int err = -ENOMEM;
fuse_req_cachep = kmem_cache_create("fuse_request",
sizeof(struct fuse_req),
- 0, 0, NULL, NULL);
+ 0, 0, NULL);
if (!fuse_req_cachep)
goto out;
projects / linux-2.6-omap-h63xx.git / blobdiff