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Commit 519c6040 authored by Miklos Szeredi's avatar Miklos Szeredi
Browse files

fuse: optimize fallocate on permanent failure



If userspace filesystem doesn't support fallocate, remember this and don't send
request next time.

Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
parent 05ba1f08
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+7 −0
Original line number Original line Diff line number Diff line
@@ -2185,6 +2185,9 @@ long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
	};
	};
	int err;
	int err;


	if (fc->no_fallocate)
		return -EOPNOTSUPP;

	req = fuse_get_req(fc);
	req = fuse_get_req(fc);
	if (IS_ERR(req))
	if (IS_ERR(req))
		return PTR_ERR(req);
		return PTR_ERR(req);
@@ -2196,6 +2199,10 @@ long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
	req->in.args[0].value = &inarg;
	req->in.args[0].value = &inarg;
	fuse_request_send(fc, req);
	fuse_request_send(fc, req);
	err = req->out.h.error;
	err = req->out.h.error;
	if (err == -ENOSYS) {
		fc->no_fallocate = 1;
		err = -EOPNOTSUPP;
	}
	fuse_put_request(fc, req);
	fuse_put_request(fc, req);


	return err;
	return err;
+3 −0
Original line number Original line Diff line number Diff line
@@ -478,6 +478,9 @@ struct fuse_conn {
	/** Are BSD file locking primitives not implemented by fs? */
	/** Are BSD file locking primitives not implemented by fs? */
	unsigned no_flock:1;
	unsigned no_flock:1;


	/** Is fallocate not implemented by fs? */
	unsigned no_fallocate:1;

	/** The number of requests waiting for completion */
	/** The number of requests waiting for completion */
	atomic_t num_waiting;
	atomic_t num_waiting;