diff options
Diffstat (limited to 'fs/fuse')
-rw-r--r-- | fs/fuse/Kconfig | 2 | ||||
-rw-r--r-- | fs/fuse/dev.c | 6 | ||||
-rw-r--r-- | fs/fuse/file.c | 100 |
3 files changed, 32 insertions, 76 deletions
diff --git a/fs/fuse/Kconfig b/fs/fuse/Kconfig index eb2a585572dc..774b2618018a 100644 --- a/fs/fuse/Kconfig +++ b/fs/fuse/Kconfig @@ -12,7 +12,7 @@ config FUSE_FS although chances are your distribution already has that library installed if you've installed the "fuse" package itself. - See <file:Documentation/filesystems/fuse.txt> for more information. + See <file:Documentation/filesystems/fuse.rst> for more information. See <file:Documentation/Changes> for needed library/utility version. If you want to develop a userspace FS, or if you want to use diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 97eec7522bf2..8ccc97356cb5 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -805,7 +805,7 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep) if (cs->len != PAGE_SIZE) goto out_fallback; - if (pipe_buf_steal(cs->pipe, buf) != 0) + if (!pipe_buf_try_steal(cs->pipe, buf)) goto out_fallback; newpage = buf->page; @@ -840,7 +840,7 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep) get_page(newpage); if (!(buf->flags & PIPE_BUF_FLAG_LRU)) - lru_cache_add_file(newpage); + lru_cache_add(newpage); err = 0; spin_lock(&cs->req->waitq.lock); @@ -2081,7 +2081,7 @@ static void end_polls(struct fuse_conn *fc) * The same effect is usually achievable through killing the filesystem daemon * and all users of the filesystem. The exception is the combination of an * asynchronous request and the tricky deadlock (see - * Documentation/filesystems/fuse.txt). + * Documentation/filesystems/fuse.rst). * * Aborting requests under I/O goes as follows: 1: Separate out unlocked * requests, they should be finished off immediately. Locked requests will be diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 9d67b830fb7a..bac51c32d660 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -915,84 +915,40 @@ static void fuse_send_readpages(struct fuse_io_args *ia, struct file *file) fuse_readpages_end(fc, &ap->args, err); } -struct fuse_fill_data { - struct fuse_io_args *ia; - struct file *file; - struct inode *inode; - unsigned int nr_pages; - unsigned int max_pages; -}; - -static int fuse_readpages_fill(void *_data, struct page *page) +static void fuse_readahead(struct readahead_control *rac) { - struct fuse_fill_data *data = _data; - struct fuse_io_args *ia = data->ia; - struct fuse_args_pages *ap = &ia->ap; - struct inode *inode = data->inode; + struct inode *inode = rac->mapping->host; struct fuse_conn *fc = get_fuse_conn(inode); + unsigned int i, max_pages, nr_pages = 0; - fuse_wait_on_page_writeback(inode, page->index); - - if (ap->num_pages && - (ap->num_pages == fc->max_pages || - (ap->num_pages + 1) * PAGE_SIZE > fc->max_read || - ap->pages[ap->num_pages - 1]->index + 1 != page->index)) { - data->max_pages = min_t(unsigned int, data->nr_pages, - fc->max_pages); - fuse_send_readpages(ia, data->file); - data->ia = ia = fuse_io_alloc(NULL, data->max_pages); - if (!ia) { - unlock_page(page); - return -ENOMEM; - } - ap = &ia->ap; - } - - if (WARN_ON(ap->num_pages >= data->max_pages)) { - unlock_page(page); - fuse_io_free(ia); - return -EIO; - } - - get_page(page); - ap->pages[ap->num_pages] = page; - ap->descs[ap->num_pages].length = PAGE_SIZE; - ap->num_pages++; - data->nr_pages--; - return 0; -} - -static int fuse_readpages(struct file *file, struct address_space *mapping, - struct list_head *pages, unsigned nr_pages) -{ - struct inode *inode = mapping->host; - struct fuse_conn *fc = get_fuse_conn(inode); - struct fuse_fill_data data; - int err; - - err = -EIO; if (is_bad_inode(inode)) - goto out; + return; - data.file = file; - data.inode = inode; - data.nr_pages = nr_pages; - data.max_pages = min_t(unsigned int, nr_pages, fc->max_pages); -; - data.ia = fuse_io_alloc(NULL, data.max_pages); - err = -ENOMEM; - if (!data.ia) - goto out; + max_pages = min_t(unsigned int, fc->max_pages, + fc->max_read / PAGE_SIZE); - err = read_cache_pages(mapping, pages, fuse_readpages_fill, &data); - if (!err) { - if (data.ia->ap.num_pages) - fuse_send_readpages(data.ia, file); - else - fuse_io_free(data.ia); + for (;;) { + struct fuse_io_args *ia; + struct fuse_args_pages *ap; + + nr_pages = readahead_count(rac) - nr_pages; + if (nr_pages > max_pages) + nr_pages = max_pages; + if (nr_pages == 0) + break; + ia = fuse_io_alloc(NULL, nr_pages); + if (!ia) + return; + ap = &ia->ap; + nr_pages = __readahead_batch(rac, ap->pages, nr_pages); + for (i = 0; i < nr_pages; i++) { + fuse_wait_on_page_writeback(inode, + readahead_index(rac) + i); + ap->descs[i].length = PAGE_SIZE; + } + ap->num_pages = nr_pages; + fuse_send_readpages(ia, rac->file); } -out: - return err; } static ssize_t fuse_cache_read_iter(struct kiocb *iocb, struct iov_iter *to) @@ -3373,10 +3329,10 @@ static const struct file_operations fuse_file_operations = { static const struct address_space_operations fuse_file_aops = { .readpage = fuse_readpage, + .readahead = fuse_readahead, .writepage = fuse_writepage, .writepages = fuse_writepages, .launder_page = fuse_launder_page, - .readpages = fuse_readpages, .set_page_dirty = __set_page_dirty_nobuffers, .bmap = fuse_bmap, .direct_IO = fuse_direct_IO, |