diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/fuse/dev.c | 28 | ||||
| -rw-r--r-- | fs/fuse/file.c | 10 | ||||
| -rw-r--r-- | fs/fuse/fuse_i.h | 15 |
3 files changed, 37 insertions, 16 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 28d9792..db4af8f 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -35,15 +35,18 @@ static struct fuse_conn *fuse_get_conn(struct file *file) } static void fuse_request_init(struct fuse_req *req, struct page **pages, + struct fuse_page_desc *page_descs, unsigned npages) { memset(req, 0, sizeof(*req)); memset(pages, 0, sizeof(*pages) * npages); + memset(page_descs, 0, sizeof(*page_descs) * npages); INIT_LIST_HEAD(&req->list); INIT_LIST_HEAD(&req->intr_entry); init_waitqueue_head(&req->waitq); atomic_set(&req->count, 1); req->pages = pages; + req->page_descs = page_descs; req->max_pages = npages; } @@ -52,18 +55,25 @@ 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) + if (npages <= FUSE_REQ_INLINE_PAGES) { pages = req->inline_pages; - else + 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) { + if (!pages || !page_descs) { + kfree(pages); + kfree(page_descs); kmem_cache_free(fuse_req_cachep, req); return NULL; } - fuse_request_init(req, pages, npages); + fuse_request_init(req, pages, page_descs, npages); } return req; } @@ -81,8 +91,10 @@ struct fuse_req *fuse_request_alloc_nofs(unsigned npages) void fuse_request_free(struct fuse_req *req) { - if (req->pages != req->inline_pages) + if (req->pages != req->inline_pages) { kfree(req->pages); + kfree(req->page_descs); + } kmem_cache_free(fuse_req_cachep, req); } @@ -186,7 +198,7 @@ static void put_reserved_req(struct fuse_conn *fc, struct fuse_req *req) struct fuse_file *ff = file->private_data; spin_lock(&fc->lock); - fuse_request_init(req, req->pages, req->max_pages); + fuse_request_init(req, req->pages, req->page_descs, req->max_pages); BUG_ON(ff->reserved_req); ff->reserved_req = req; wake_up_all(&fc->reserved_req_waitq); @@ -891,7 +903,7 @@ static int fuse_copy_pages(struct fuse_copy_state *cs, unsigned nbytes, { unsigned i; struct fuse_req *req = cs->req; - unsigned offset = req->page_offset; + unsigned offset = req->page_descs[0].offset; unsigned count = min(nbytes, (unsigned) PAGE_SIZE - offset); for (i = 0; i < req->num_pages && (nbytes || zeroing); i++) { @@ -1599,7 +1611,7 @@ static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode, req->in.h.nodeid = outarg->nodeid; req->in.numargs = 2; req->in.argpages = 1; - req->page_offset = offset; + req->page_descs[0].offset = offset; req->end = fuse_retrieve_end; index = outarg->offset >> PAGE_CACHE_SHIFT; diff --git a/fs/fuse/file.c b/fs/fuse/file.c index fdb5b33..2b6f08a 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -798,7 +798,7 @@ static size_t fuse_send_write_pages(struct fuse_req *req, struct file *file, res = fuse_send_write(req, file, pos, count, NULL); - offset = req->page_offset; + offset = req->page_descs[0].offset; count = res; for (i = 0; i < req->num_pages; i++) { struct page *page = req->pages[i]; @@ -829,7 +829,7 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req, int err; req->in.argpages = 1; - req->page_offset = offset; + req->page_descs[0].offset = offset; do { size_t tmp; @@ -1070,14 +1070,14 @@ static int fuse_get_user_pages(struct fuse_req *req, const char __user *buf, return npages; req->num_pages = npages; - req->page_offset = offset; + req->page_descs[0].offset = offset; if (write) req->in.argpages = 1; else req->out.argpages = 1; - nbytes = (req->num_pages << PAGE_SHIFT) - req->page_offset; + nbytes = (req->num_pages << PAGE_SHIFT) - req->page_descs[0].offset; *nbytesp = min(*nbytesp, nbytes); return 0; @@ -1314,7 +1314,7 @@ static int fuse_writepage_locked(struct page *page) req->in.argpages = 1; req->num_pages = 1; req->pages[0] = tmp_page; - req->page_offset = 0; + req->page_descs[0].offset = 0; req->end = fuse_writepage_end; req->inode = inode; diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 5b21e6a..70cef60 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -203,6 +203,12 @@ struct fuse_out { struct fuse_arg args[3]; }; +/** FUSE page descriptor */ +struct fuse_page_desc { + unsigned int length; + unsigned int offset; +}; + /** The request state */ enum fuse_req_state { FUSE_REQ_INIT = 0, @@ -296,18 +302,21 @@ struct fuse_req { /** page vector */ struct page **pages; + /** page-descriptor vector */ + struct fuse_page_desc *page_descs; + /** size of the 'pages' array */ unsigned max_pages; /** inline page vector */ struct page *inline_pages[FUSE_REQ_INLINE_PAGES]; + /** inline page-descriptor vector */ + struct fuse_page_desc inline_page_descs[FUSE_REQ_INLINE_PAGES]; + /** number of pages in vector */ unsigned num_pages; - /** offset of data on first page */ - unsigned page_offset; - /** File used in the request (or NULL) */ struct fuse_file *ff; |
