Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: fix ioctl ABI fuse: allow batching of FORGET requests fuse: separate queue for FORGET requests fuse: ioctl cleanup Fix up trivial conflict in fs/fuse/inode.c due to RCU lookup having done the RCU-freeing of the inode in fuse_destroy_inode().
This commit is contained in:
Linus Torvalds
commit
7d44b04401
156
fs/fuse/dev.c
156
fs/fuse/dev.c
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@ -251,6 +251,20 @@ static void queue_request(struct fuse_conn *fc, struct fuse_req *req)
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kill_fasync(&fc->fasync, SIGIO, POLL_IN);
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}
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void fuse_queue_forget(struct fuse_conn *fc, struct fuse_forget_link *forget,
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u64 nodeid, u64 nlookup)
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{
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forget->forget_one.nodeid = nodeid;
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forget->forget_one.nlookup = nlookup;
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spin_lock(&fc->lock);
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fc->forget_list_tail->next = forget;
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fc->forget_list_tail = forget;
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wake_up(&fc->waitq);
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kill_fasync(&fc->fasync, SIGIO, POLL_IN);
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spin_unlock(&fc->lock);
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}
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static void flush_bg_queue(struct fuse_conn *fc)
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{
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while (fc->active_background < fc->max_background &&
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@ -438,12 +452,6 @@ static void fuse_request_send_nowait(struct fuse_conn *fc, struct fuse_req *req)
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}
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}
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void fuse_request_send_noreply(struct fuse_conn *fc, struct fuse_req *req)
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{
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req->isreply = 0;
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fuse_request_send_nowait(fc, req);
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}
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void fuse_request_send_background(struct fuse_conn *fc, struct fuse_req *req)
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{
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req->isreply = 1;
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@ -896,9 +904,15 @@ static int fuse_copy_args(struct fuse_copy_state *cs, unsigned numargs,
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return err;
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}
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static int forget_pending(struct fuse_conn *fc)
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{
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return fc->forget_list_head.next != NULL;
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}
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static int request_pending(struct fuse_conn *fc)
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{
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return !list_empty(&fc->pending) || !list_empty(&fc->interrupts);
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return !list_empty(&fc->pending) || !list_empty(&fc->interrupts) ||
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forget_pending(fc);
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}
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/* Wait until a request is available on the pending list */
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@ -960,6 +974,120 @@ __releases(fc->lock)
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return err ? err : reqsize;
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}
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static struct fuse_forget_link *dequeue_forget(struct fuse_conn *fc,
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unsigned max,
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unsigned *countp)
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{
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struct fuse_forget_link *head = fc->forget_list_head.next;
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struct fuse_forget_link **newhead = &head;
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unsigned count;
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for (count = 0; *newhead != NULL && count < max; count++)
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newhead = &(*newhead)->next;
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fc->forget_list_head.next = *newhead;
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*newhead = NULL;
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if (fc->forget_list_head.next == NULL)
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fc->forget_list_tail = &fc->forget_list_head;
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if (countp != NULL)
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*countp = count;
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return head;
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}
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static int fuse_read_single_forget(struct fuse_conn *fc,
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struct fuse_copy_state *cs,
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size_t nbytes)
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__releases(fc->lock)
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{
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int err;
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struct fuse_forget_link *forget = dequeue_forget(fc, 1, NULL);
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struct fuse_forget_in arg = {
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.nlookup = forget->forget_one.nlookup,
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};
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struct fuse_in_header ih = {
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.opcode = FUSE_FORGET,
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.nodeid = forget->forget_one.nodeid,
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.unique = fuse_get_unique(fc),
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.len = sizeof(ih) + sizeof(arg),
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};
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spin_unlock(&fc->lock);
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kfree(forget);
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if (nbytes < ih.len)
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return -EINVAL;
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err = fuse_copy_one(cs, &ih, sizeof(ih));
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if (!err)
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err = fuse_copy_one(cs, &arg, sizeof(arg));
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fuse_copy_finish(cs);
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if (err)
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return err;
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return ih.len;
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}
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static int fuse_read_batch_forget(struct fuse_conn *fc,
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struct fuse_copy_state *cs, size_t nbytes)
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__releases(fc->lock)
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{
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int err;
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unsigned max_forgets;
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unsigned count;
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struct fuse_forget_link *head;
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struct fuse_batch_forget_in arg = { .count = 0 };
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struct fuse_in_header ih = {
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.opcode = FUSE_BATCH_FORGET,
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.unique = fuse_get_unique(fc),
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.len = sizeof(ih) + sizeof(arg),
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};
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if (nbytes < ih.len) {
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spin_unlock(&fc->lock);
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return -EINVAL;
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}
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max_forgets = (nbytes - ih.len) / sizeof(struct fuse_forget_one);
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head = dequeue_forget(fc, max_forgets, &count);
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spin_unlock(&fc->lock);
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arg.count = count;
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ih.len += count * sizeof(struct fuse_forget_one);
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err = fuse_copy_one(cs, &ih, sizeof(ih));
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if (!err)
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err = fuse_copy_one(cs, &arg, sizeof(arg));
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while (head) {
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struct fuse_forget_link *forget = head;
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if (!err) {
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err = fuse_copy_one(cs, &forget->forget_one,
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sizeof(forget->forget_one));
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}
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head = forget->next;
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kfree(forget);
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}
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fuse_copy_finish(cs);
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if (err)
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return err;
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return ih.len;
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}
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static int fuse_read_forget(struct fuse_conn *fc, struct fuse_copy_state *cs,
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size_t nbytes)
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__releases(fc->lock)
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{
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if (fc->minor < 16 || fc->forget_list_head.next->next == NULL)
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return fuse_read_single_forget(fc, cs, nbytes);
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else
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return fuse_read_batch_forget(fc, cs, nbytes);
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}
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/*
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* Read a single request into the userspace filesystem's buffer. This
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* function waits until a request is available, then removes it from
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@ -998,6 +1126,14 @@ static ssize_t fuse_dev_do_read(struct fuse_conn *fc, struct file *file,
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return fuse_read_interrupt(fc, cs, nbytes, req);
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}
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if (forget_pending(fc)) {
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if (list_empty(&fc->pending) || fc->forget_batch-- > 0)
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return fuse_read_forget(fc, cs, nbytes);
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if (fc->forget_batch <= -8)
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fc->forget_batch = 16;
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}
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req = list_entry(fc->pending.next, struct fuse_req, list);
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req->state = FUSE_REQ_READING;
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list_move(&req->list, &fc->io);
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@ -1090,7 +1226,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
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if (!fc)
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return -EPERM;
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bufs = kmalloc(pipe->buffers * sizeof (struct pipe_buffer), GFP_KERNEL);
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bufs = kmalloc(pipe->buffers * sizeof(struct pipe_buffer), GFP_KERNEL);
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if (!bufs)
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return -ENOMEM;
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@ -1626,7 +1762,7 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe,
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if (!fc)
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return -EPERM;
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bufs = kmalloc(pipe->buffers * sizeof (struct pipe_buffer), GFP_KERNEL);
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bufs = kmalloc(pipe->buffers * sizeof(struct pipe_buffer), GFP_KERNEL);
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if (!bufs)
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return -ENOMEM;
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@ -1770,6 +1906,8 @@ __acquires(fc->lock)
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flush_bg_queue(fc);
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end_requests(fc, &fc->pending);
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end_requests(fc, &fc->processing);
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while (forget_pending(fc))
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kfree(dequeue_forget(fc, 1, NULL));
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}
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/*
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@ -10,9 +10,9 @@
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#include <linux/pagemap.h>
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#include <linux/file.h>
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#include <linux/gfp.h>
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#include <linux/sched.h>
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#include <linux/namei.h>
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#include <linux/slab.h>
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#if BITS_PER_LONG >= 64
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static inline void fuse_dentry_settime(struct dentry *entry, u64 time)
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@ -169,7 +169,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
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struct fuse_entry_out outarg;
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struct fuse_conn *fc;
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struct fuse_req *req;
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struct fuse_req *forget_req;
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struct fuse_forget_link *forget;
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struct dentry *parent;
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u64 attr_version;
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@ -182,8 +182,8 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
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if (IS_ERR(req))
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return 0;
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forget_req = fuse_get_req(fc);
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if (IS_ERR(forget_req)) {
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forget = fuse_alloc_forget();
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if (!forget) {
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fuse_put_request(fc, req);
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return 0;
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}
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@ -203,15 +203,14 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
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if (!err) {
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struct fuse_inode *fi = get_fuse_inode(inode);
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if (outarg.nodeid != get_node_id(inode)) {
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fuse_send_forget(fc, forget_req,
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outarg.nodeid, 1);
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fuse_queue_forget(fc, forget, outarg.nodeid, 1);
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return 0;
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}
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spin_lock(&fc->lock);
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fi->nlookup++;
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spin_unlock(&fc->lock);
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}
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fuse_put_request(fc, forget_req);
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kfree(forget);
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if (err || (outarg.attr.mode ^ inode->i_mode) & S_IFMT)
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return 0;
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@ -263,7 +262,7 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, struct qstr *name,
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{
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struct fuse_conn *fc = get_fuse_conn_super(sb);
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struct fuse_req *req;
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struct fuse_req *forget_req;
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struct fuse_forget_link *forget;
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u64 attr_version;
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int err;
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@ -277,9 +276,9 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, struct qstr *name,
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if (IS_ERR(req))
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goto out;
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forget_req = fuse_get_req(fc);
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err = PTR_ERR(forget_req);
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if (IS_ERR(forget_req)) {
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forget = fuse_alloc_forget();
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err = -ENOMEM;
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if (!forget) {
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fuse_put_request(fc, req);
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goto out;
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}
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@ -305,13 +304,13 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, struct qstr *name,
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attr_version);
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err = -ENOMEM;
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if (!*inode) {
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fuse_send_forget(fc, forget_req, outarg->nodeid, 1);
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fuse_queue_forget(fc, forget, outarg->nodeid, 1);
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goto out;
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}
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err = 0;
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out_put_forget:
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fuse_put_request(fc, forget_req);
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kfree(forget);
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out:
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return err;
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}
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@ -378,7 +377,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode,
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struct inode *inode;
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struct fuse_conn *fc = get_fuse_conn(dir);
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struct fuse_req *req;
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struct fuse_req *forget_req;
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struct fuse_forget_link *forget;
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struct fuse_create_in inarg;
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struct fuse_open_out outopen;
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struct fuse_entry_out outentry;
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@ -392,9 +391,9 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode,
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if (flags & O_DIRECT)
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return -EINVAL;
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forget_req = fuse_get_req(fc);
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if (IS_ERR(forget_req))
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return PTR_ERR(forget_req);
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forget = fuse_alloc_forget();
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if (!forget)
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return -ENOMEM;
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req = fuse_get_req(fc);
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err = PTR_ERR(req);
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@ -452,10 +451,10 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode,
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if (!inode) {
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flags &= ~(O_CREAT | O_EXCL | O_TRUNC);
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fuse_sync_release(ff, flags);
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fuse_send_forget(fc, forget_req, outentry.nodeid, 1);
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fuse_queue_forget(fc, forget, outentry.nodeid, 1);
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return -ENOMEM;
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}
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fuse_put_request(fc, forget_req);
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kfree(forget);
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d_instantiate(entry, inode);
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fuse_change_entry_timeout(entry, &outentry);
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fuse_invalidate_attr(dir);
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||||
|
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@ -473,7 +472,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode,
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|||
out_put_request:
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||||
fuse_put_request(fc, req);
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||||
out_put_forget_req:
|
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fuse_put_request(fc, forget_req);
|
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kfree(forget);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
|
@ -487,12 +486,12 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
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|||
struct fuse_entry_out outarg;
|
||||
struct inode *inode;
|
||||
int err;
|
||||
struct fuse_req *forget_req;
|
||||
struct fuse_forget_link *forget;
|
||||
|
||||
forget_req = fuse_get_req(fc);
|
||||
if (IS_ERR(forget_req)) {
|
||||
forget = fuse_alloc_forget();
|
||||
if (!forget) {
|
||||
fuse_put_request(fc, req);
|
||||
return PTR_ERR(forget_req);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
memset(&outarg, 0, sizeof(outarg));
|
||||
|
|
@ -519,10 +518,10 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
|
|||
inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,
|
||||
&outarg.attr, entry_attr_timeout(&outarg), 0);
|
||||
if (!inode) {
|
||||
fuse_send_forget(fc, forget_req, outarg.nodeid, 1);
|
||||
fuse_queue_forget(fc, forget, outarg.nodeid, 1);
|
||||
return -ENOMEM;
|
||||
}
|
||||
fuse_put_request(fc, forget_req);
|
||||
kfree(forget);
|
||||
|
||||
if (S_ISDIR(inode->i_mode)) {
|
||||
struct dentry *alias;
|
||||
|
|
@ -545,7 +544,7 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
|
|||
return 0;
|
||||
|
||||
out_put_forget_req:
|
||||
fuse_put_request(fc, forget_req);
|
||||
kfree(forget);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1634,9 +1634,9 @@ static int fuse_ioctl_copy_user(struct page **pages, struct iovec *iov,
|
|||
* and 64bit. Fortunately we can determine which structure the server
|
||||
* used from the size of the reply.
|
||||
*/
|
||||
static int fuse_copy_ioctl_iovec(struct iovec *dst, void *src,
|
||||
size_t transferred, unsigned count,
|
||||
bool is_compat)
|
||||
static int fuse_copy_ioctl_iovec_old(struct iovec *dst, void *src,
|
||||
size_t transferred, unsigned count,
|
||||
bool is_compat)
|
||||
{
|
||||
#ifdef CONFIG_COMPAT
|
||||
if (count * sizeof(struct compat_iovec) == transferred) {
|
||||
|
|
@ -1680,6 +1680,42 @@ static int fuse_verify_ioctl_iov(struct iovec *iov, size_t count)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int fuse_copy_ioctl_iovec(struct fuse_conn *fc, struct iovec *dst,
|
||||
void *src, size_t transferred, unsigned count,
|
||||
bool is_compat)
|
||||
{
|
||||
unsigned i;
|
||||
struct fuse_ioctl_iovec *fiov = src;
|
||||
|
||||
if (fc->minor < 16) {
|
||||
return fuse_copy_ioctl_iovec_old(dst, src, transferred,
|
||||
count, is_compat);
|
||||
}
|
||||
|
||||
if (count * sizeof(struct fuse_ioctl_iovec) != transferred)
|
||||
return -EIO;
|
||||
|
||||
for (i = 0; i < count; i++) {
|
||||
/* Did the server supply an inappropriate value? */
|
||||
if (fiov[i].base != (unsigned long) fiov[i].base ||
|
||||
fiov[i].len != (unsigned long) fiov[i].len)
|
||||
return -EIO;
|
||||
|
||||
dst[i].iov_base = (void __user *) (unsigned long) fiov[i].base;
|
||||
dst[i].iov_len = (size_t) fiov[i].len;
|
||||
|
||||
#ifdef CONFIG_COMPAT
|
||||
if (is_compat &&
|
||||
(ptr_to_compat(dst[i].iov_base) != fiov[i].base ||
|
||||
(compat_size_t) dst[i].iov_len != fiov[i].len))
|
||||
return -EIO;
|
||||
#endif
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* For ioctls, there is no generic way to determine how much memory
|
||||
* needs to be read and/or written. Furthermore, ioctls are allowed
|
||||
|
|
@ -1740,18 +1776,25 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
|
|||
struct fuse_ioctl_out outarg;
|
||||
struct fuse_req *req = NULL;
|
||||
struct page **pages = NULL;
|
||||
struct page *iov_page = NULL;
|
||||
struct iovec *iov_page = NULL;
|
||||
struct iovec *in_iov = NULL, *out_iov = NULL;
|
||||
unsigned int in_iovs = 0, out_iovs = 0, num_pages = 0, max_pages;
|
||||
size_t in_size, out_size, transferred;
|
||||
int err;
|
||||
|
||||
#if BITS_PER_LONG == 32
|
||||
inarg.flags |= FUSE_IOCTL_32BIT;
|
||||
#else
|
||||
if (flags & FUSE_IOCTL_COMPAT)
|
||||
inarg.flags |= FUSE_IOCTL_32BIT;
|
||||
#endif
|
||||
|
||||
/* assume all the iovs returned by client always fits in a page */
|
||||
BUILD_BUG_ON(sizeof(struct iovec) * FUSE_IOCTL_MAX_IOV > PAGE_SIZE);
|
||||
BUILD_BUG_ON(sizeof(struct fuse_ioctl_iovec) * FUSE_IOCTL_MAX_IOV > PAGE_SIZE);
|
||||
|
||||
err = -ENOMEM;
|
||||
pages = kzalloc(sizeof(pages[0]) * FUSE_MAX_PAGES_PER_REQ, GFP_KERNEL);
|
||||
iov_page = alloc_page(GFP_KERNEL);
|
||||
iov_page = (struct iovec *) __get_free_page(GFP_KERNEL);
|
||||
if (!pages || !iov_page)
|
||||
goto out;
|
||||
|
||||
|
|
@ -1760,7 +1803,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
|
|||
* RETRY from server is not allowed.
|
||||
*/
|
||||
if (!(flags & FUSE_IOCTL_UNRESTRICTED)) {
|
||||
struct iovec *iov = page_address(iov_page);
|
||||
struct iovec *iov = iov_page;
|
||||
|
||||
iov->iov_base = (void __user *)arg;
|
||||
iov->iov_len = _IOC_SIZE(cmd);
|
||||
|
|
@ -1841,7 +1884,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
|
|||
|
||||
/* did it ask for retry? */
|
||||
if (outarg.flags & FUSE_IOCTL_RETRY) {
|
||||
char *vaddr;
|
||||
void *vaddr;
|
||||
|
||||
/* no retry if in restricted mode */
|
||||
err = -EIO;
|
||||
|
|
@ -1862,14 +1905,14 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
|
|||
goto out;
|
||||
|
||||
vaddr = kmap_atomic(pages[0], KM_USER0);
|
||||
err = fuse_copy_ioctl_iovec(page_address(iov_page), vaddr,
|
||||
err = fuse_copy_ioctl_iovec(fc, iov_page, vaddr,
|
||||
transferred, in_iovs + out_iovs,
|
||||
(flags & FUSE_IOCTL_COMPAT) != 0);
|
||||
kunmap_atomic(vaddr, KM_USER0);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
in_iov = page_address(iov_page);
|
||||
in_iov = iov_page;
|
||||
out_iov = in_iov + in_iovs;
|
||||
|
||||
err = fuse_verify_ioctl_iov(in_iov, in_iovs);
|
||||
|
|
@ -1891,8 +1934,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
|
|||
out:
|
||||
if (req)
|
||||
fuse_put_request(fc, req);
|
||||
if (iov_page)
|
||||
__free_page(iov_page);
|
||||
free_page((unsigned long) iov_page);
|
||||
while (num_pages)
|
||||
__free_page(pages[--num_pages]);
|
||||
kfree(pages);
|
||||
|
|
|
|||
|
|
@ -53,6 +53,12 @@ extern struct mutex fuse_mutex;
|
|||
extern unsigned max_user_bgreq;
|
||||
extern unsigned max_user_congthresh;
|
||||
|
||||
/* One forget request */
|
||||
struct fuse_forget_link {
|
||||
struct fuse_forget_one forget_one;
|
||||
struct fuse_forget_link *next;
|
||||
};
|
||||
|
||||
/** FUSE inode */
|
||||
struct fuse_inode {
|
||||
/** Inode data */
|
||||
|
|
@ -66,7 +72,7 @@ struct fuse_inode {
|
|||
u64 nlookup;
|
||||
|
||||
/** The request used for sending the FORGET message */
|
||||
struct fuse_req *forget_req;
|
||||
struct fuse_forget_link *forget;
|
||||
|
||||
/** Time in jiffies until the file attributes are valid */
|
||||
u64 i_time;
|
||||
|
|
@ -255,7 +261,6 @@ struct fuse_req {
|
|||
|
||||
/** Data for asynchronous requests */
|
||||
union {
|
||||
struct fuse_forget_in forget_in;
|
||||
struct {
|
||||
struct fuse_release_in in;
|
||||
struct path path;
|
||||
|
|
@ -369,6 +374,13 @@ struct fuse_conn {
|
|||
/** Pending interrupts */
|
||||
struct list_head interrupts;
|
||||
|
||||
/** Queue of pending forgets */
|
||||
struct fuse_forget_link forget_list_head;
|
||||
struct fuse_forget_link *forget_list_tail;
|
||||
|
||||
/** Batching of FORGET requests (positive indicates FORGET batch) */
|
||||
int forget_batch;
|
||||
|
||||
/** Flag indicating if connection is blocked. This will be
|
||||
the case before the INIT reply is received, and if there
|
||||
are too many outstading backgrounds requests */
|
||||
|
|
@ -543,8 +555,10 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, struct qstr *name,
|
|||
/**
|
||||
* Send FORGET command
|
||||
*/
|
||||
void fuse_send_forget(struct fuse_conn *fc, struct fuse_req *req,
|
||||
u64 nodeid, u64 nlookup);
|
||||
void fuse_queue_forget(struct fuse_conn *fc, struct fuse_forget_link *forget,
|
||||
u64 nodeid, u64 nlookup);
|
||||
|
||||
struct fuse_forget_link *fuse_alloc_forget(void);
|
||||
|
||||
/**
|
||||
* Initialize READ or READDIR request
|
||||
|
|
@ -655,11 +669,6 @@ void fuse_put_request(struct fuse_conn *fc, struct fuse_req *req);
|
|||
*/
|
||||
void fuse_request_send(struct fuse_conn *fc, struct fuse_req *req);
|
||||
|
||||
/**
|
||||
* Send a request with no reply
|
||||
*/
|
||||
void fuse_request_send_noreply(struct fuse_conn *fc, struct fuse_req *req);
|
||||
|
||||
/**
|
||||
* Send a request in the background
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -71,6 +71,11 @@ struct fuse_mount_data {
|
|||
unsigned blksize;
|
||||
};
|
||||
|
||||
struct fuse_forget_link *fuse_alloc_forget()
|
||||
{
|
||||
return kzalloc(sizeof(struct fuse_forget_link), GFP_KERNEL);
|
||||
}
|
||||
|
||||
static struct inode *fuse_alloc_inode(struct super_block *sb)
|
||||
{
|
||||
struct inode *inode;
|
||||
|
|
@ -90,8 +95,8 @@ static struct inode *fuse_alloc_inode(struct super_block *sb)
|
|||
INIT_LIST_HEAD(&fi->queued_writes);
|
||||
INIT_LIST_HEAD(&fi->writepages);
|
||||
init_waitqueue_head(&fi->page_waitq);
|
||||
fi->forget_req = fuse_request_alloc();
|
||||
if (!fi->forget_req) {
|
||||
fi->forget = fuse_alloc_forget();
|
||||
if (!fi->forget) {
|
||||
kmem_cache_free(fuse_inode_cachep, inode);
|
||||
return NULL;
|
||||
}
|
||||
|
|
@ -111,24 +116,10 @@ static void fuse_destroy_inode(struct inode *inode)
|
|||
struct fuse_inode *fi = get_fuse_inode(inode);
|
||||
BUG_ON(!list_empty(&fi->write_files));
|
||||
BUG_ON(!list_empty(&fi->queued_writes));
|
||||
if (fi->forget_req)
|
||||
fuse_request_free(fi->forget_req);
|
||||
kfree(fi->forget);
|
||||
call_rcu(&inode->i_rcu, fuse_i_callback);
|
||||
}
|
||||
|
||||
void fuse_send_forget(struct fuse_conn *fc, struct fuse_req *req,
|
||||
u64 nodeid, u64 nlookup)
|
||||
{
|
||||
struct fuse_forget_in *inarg = &req->misc.forget_in;
|
||||
inarg->nlookup = nlookup;
|
||||
req->in.h.opcode = FUSE_FORGET;
|
||||
req->in.h.nodeid = nodeid;
|
||||
req->in.numargs = 1;
|
||||
req->in.args[0].size = sizeof(struct fuse_forget_in);
|
||||
req->in.args[0].value = inarg;
|
||||
fuse_request_send_noreply(fc, req);
|
||||
}
|
||||
|
||||
static void fuse_evict_inode(struct inode *inode)
|
||||
{
|
||||
truncate_inode_pages(&inode->i_data, 0);
|
||||
|
|
@ -136,8 +127,8 @@ static void fuse_evict_inode(struct inode *inode)
|
|||
if (inode->i_sb->s_flags & MS_ACTIVE) {
|
||||
struct fuse_conn *fc = get_fuse_conn(inode);
|
||||
struct fuse_inode *fi = get_fuse_inode(inode);
|
||||
fuse_send_forget(fc, fi->forget_req, fi->nodeid, fi->nlookup);
|
||||
fi->forget_req = NULL;
|
||||
fuse_queue_forget(fc, fi->forget, fi->nodeid, fi->nlookup);
|
||||
fi->forget = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -541,6 +532,7 @@ void fuse_conn_init(struct fuse_conn *fc)
|
|||
INIT_LIST_HEAD(&fc->interrupts);
|
||||
INIT_LIST_HEAD(&fc->bg_queue);
|
||||
INIT_LIST_HEAD(&fc->entry);
|
||||
fc->forget_list_tail = &fc->forget_list_head;
|
||||
atomic_set(&fc->num_waiting, 0);
|
||||
fc->max_background = FUSE_DEFAULT_MAX_BACKGROUND;
|
||||
fc->congestion_threshold = FUSE_DEFAULT_CONGESTION_THRESHOLD;
|
||||
|
|
|
|||
|
|
@ -41,6 +41,12 @@
|
|||
* 7.15
|
||||
* - add store notify
|
||||
* - add retrieve notify
|
||||
*
|
||||
* 7.16
|
||||
* - add BATCH_FORGET request
|
||||
* - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
|
||||
* fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
|
||||
* - add FUSE_IOCTL_32BIT flag
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_FUSE_H
|
||||
|
|
@ -72,7 +78,7 @@
|
|||
#define FUSE_KERNEL_VERSION 7
|
||||
|
||||
/** Minor version number of this interface */
|
||||
#define FUSE_KERNEL_MINOR_VERSION 15
|
||||
#define FUSE_KERNEL_MINOR_VERSION 16
|
||||
|
||||
/** The node ID of the root inode */
|
||||
#define FUSE_ROOT_ID 1
|
||||
|
|
@ -200,12 +206,14 @@ struct fuse_file_lock {
|
|||
* FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
|
||||
* FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
|
||||
* FUSE_IOCTL_RETRY: retry with new iovecs
|
||||
* FUSE_IOCTL_32BIT: 32bit ioctl
|
||||
*
|
||||
* FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
|
||||
*/
|
||||
#define FUSE_IOCTL_COMPAT (1 << 0)
|
||||
#define FUSE_IOCTL_UNRESTRICTED (1 << 1)
|
||||
#define FUSE_IOCTL_RETRY (1 << 2)
|
||||
#define FUSE_IOCTL_32BIT (1 << 3)
|
||||
|
||||
#define FUSE_IOCTL_MAX_IOV 256
|
||||
|
||||
|
|
@ -256,6 +264,7 @@ enum fuse_opcode {
|
|||
FUSE_IOCTL = 39,
|
||||
FUSE_POLL = 40,
|
||||
FUSE_NOTIFY_REPLY = 41,
|
||||
FUSE_BATCH_FORGET = 42,
|
||||
|
||||
/* CUSE specific operations */
|
||||
CUSE_INIT = 4096,
|
||||
|
|
@ -290,6 +299,16 @@ struct fuse_forget_in {
|
|||
__u64 nlookup;
|
||||
};
|
||||
|
||||
struct fuse_forget_one {
|
||||
__u64 nodeid;
|
||||
__u64 nlookup;
|
||||
};
|
||||
|
||||
struct fuse_batch_forget_in {
|
||||
__u32 count;
|
||||
__u32 dummy;
|
||||
};
|
||||
|
||||
struct fuse_getattr_in {
|
||||
__u32 getattr_flags;
|
||||
__u32 dummy;
|
||||
|
|
@ -510,6 +529,11 @@ struct fuse_ioctl_in {
|
|||
__u32 out_size;
|
||||
};
|
||||
|
||||
struct fuse_ioctl_iovec {
|
||||
__u64 base;
|
||||
__u64 len;
|
||||
};
|
||||
|
||||
struct fuse_ioctl_out {
|
||||
__s32 result;
|
||||
__u32 flags;
|
||||
|
|
|
|||
Reference in New Issue