struct fuse_req *fuse_request_alloc_nofs(void)
{
struct fuse_req *req = kmem_cache_alloc(fuse_req_cachep, GFP_NOFS);
if (req)
fuse_request_init(req);
return req;
}
struct fuse_req *fuse_request_alloc(void)
{
struct fuse_req *req = kmem_cache_alloc(fuse_req_cachep, GFP_KERNEL);
if (req)
fuse_request_init(req);
return req;
}
static struct fuse_req *__fuse_request_alloc(unsigned npages, gfp_t flags)
{
struct fuse_req *req = kmem_cache_alloc(fuse_req_cachep, flags);
if (req) {
struct page **pages;
struct fuse_page_desc *page_descs;
if (npages <= FUSE_REQ_INLINE_PAGES) {
pages = req->inline_pages;
page_descs = req->inline_page_descs;
} else {
pages = kmalloc(sizeof(struct page *) * npages, flags);
page_descs = kmalloc(sizeof(struct fuse_page_desc) *
npages, flags);
}
if (!pages || !page_descs) {
kfree(pages);
kfree(page_descs);
kmem_cache_free(fuse_req_cachep, req);
return NULL;
}
fuse_request_init(req, pages, page_descs, npages);
}
return req;
}
/*
* Put stolen request back into fuse_file->reserved_req
*/
static void put_reserved_req(struct fuse_conn *fc, struct fuse_req *req)
{
struct file *file = req->stolen_file;
struct fuse_file *ff = file->private_data;
spin_lock(&fc->lock);
fuse_request_init(req);
BUG_ON(ff->reserved_req);
ff->reserved_req = req;
wake_up_all(&fc->reserved_req_waitq);
spin_unlock(&fc->lock);
fput(file);
}