diff --git a/block/elevator.c b/block/elevator.c index 25f6ef28e3bb..96a00c822748 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -964,17 +964,18 @@ void elv_unregister_queue(struct request_queue *q) int elv_register(struct elevator_type *e) { + char *def = ""; spin_lock_irq(&elv_list_lock); BUG_ON(elevator_find(e->elevator_name)); list_add_tail(&e->list, &elv_list); spin_unlock_irq(&elv_list_lock); - printk(KERN_INFO "io scheduler %s registered", e->elevator_name); if (!strcmp(e->elevator_name, chosen_elevator) || (!*chosen_elevator && !strcmp(e->elevator_name, CONFIG_DEFAULT_IOSCHED))) - printk(" (default)"); - printk("\n"); + def = " (default)"; + + printk(KERN_INFO "io scheduler %s registered%s\n", e->elevator_name, def); return 0; } EXPORT_SYMBOL_GPL(elv_register); diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c index 38c293b987b7..3de06953ac33 100644 --- a/block/ll_rw_blk.c +++ b/block/ll_rw_blk.c @@ -1221,7 +1221,7 @@ void blk_recount_segments(request_queue_t *q, struct bio *bio) * considered part of another segment, since that might * change with the bounce page. */ - high = page_to_pfn(bv->bv_page) >= q->bounce_pfn; + high = page_to_pfn(bv->bv_page) > q->bounce_pfn; if (high || highprv) goto new_hw_segment; if (cluster) { @@ -3658,8 +3658,8 @@ int __init blk_dev_init(void) open_softirq(BLOCK_SOFTIRQ, blk_done_softirq, NULL); register_hotcpu_notifier(&blk_cpu_notifier); - blk_max_low_pfn = max_low_pfn; - blk_max_pfn = max_pfn; + blk_max_low_pfn = max_low_pfn - 1; + blk_max_pfn = max_pfn - 1; return 0; } diff --git a/fs/splice.c b/fs/splice.c index 2fca6ebf4cc2..07f6556add0a 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -576,76 +576,21 @@ static int pipe_to_file(struct pipe_inode_info *pipe, struct pipe_buffer *buf, if (this_len + offset > PAGE_CACHE_SIZE) this_len = PAGE_CACHE_SIZE - offset; - /* - * Reuse buf page, if SPLICE_F_MOVE is set and we are doing a full - * page. - */ - if ((sd->flags & SPLICE_F_MOVE) && this_len == PAGE_CACHE_SIZE) { - /* - * If steal succeeds, buf->page is now pruned from the - * pagecache and we can reuse it. The page will also be - * locked on successful return. - */ - if (buf->ops->steal(pipe, buf)) - goto find_page; - - page = buf->page; - if (add_to_page_cache(page, mapping, index, GFP_KERNEL)) { - unlock_page(page); - goto find_page; - } - - page_cache_get(page); - - if (!(buf->flags & PIPE_BUF_FLAG_LRU)) - lru_cache_add(page); - } else { find_page: - page = find_lock_page(mapping, index); - if (!page) { - ret = -ENOMEM; - page = page_cache_alloc_cold(mapping); - if (unlikely(!page)) - goto out_ret; - - /* - * This will also lock the page - */ - ret = add_to_page_cache_lru(page, mapping, index, - GFP_KERNEL); - if (unlikely(ret)) - goto out; - } + page = find_lock_page(mapping, index); + if (!page) { + ret = -ENOMEM; + page = page_cache_alloc_cold(mapping); + if (unlikely(!page)) + goto out_ret; /* - * We get here with the page locked. If the page is also - * uptodate, we don't need to do more. If it isn't, we - * may need to bring it in if we are not going to overwrite - * the full page. + * This will also lock the page */ - if (!PageUptodate(page)) { - if (this_len < PAGE_CACHE_SIZE) { - ret = mapping->a_ops->readpage(file, page); - if (unlikely(ret)) - goto out; - - lock_page(page); - - if (!PageUptodate(page)) { - /* - * Page got invalidated, repeat. - */ - if (!page->mapping) { - unlock_page(page); - page_cache_release(page); - goto find_page; - } - ret = -EIO; - goto out; - } - } else - SetPageUptodate(page); - } + ret = add_to_page_cache_lru(page, mapping, index, + GFP_KERNEL); + if (unlikely(ret)) + goto out; } ret = mapping->a_ops->prepare_write(file, page, offset, offset+this_len); @@ -706,9 +651,9 @@ static int pipe_to_file(struct pipe_inode_info *pipe, struct pipe_buffer *buf, * key here is the 'actor' worker passed in that actually moves the data * to the wanted destination. See pipe_to_file/pipe_to_sendpage above. */ -static ssize_t __splice_from_pipe(struct pipe_inode_info *pipe, - struct file *out, loff_t *ppos, size_t len, - unsigned int flags, splice_actor *actor) +ssize_t __splice_from_pipe(struct pipe_inode_info *pipe, + struct file *out, loff_t *ppos, size_t len, + unsigned int flags, splice_actor *actor) { int ret, do_wakeup, err; struct splice_desc sd; @@ -802,6 +747,7 @@ static ssize_t __splice_from_pipe(struct pipe_inode_info *pipe, return ret; } +EXPORT_SYMBOL(__splice_from_pipe); ssize_t splice_from_pipe(struct pipe_inode_info *pipe, struct file *out, loff_t *ppos, size_t len, unsigned int flags, diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index 2e19478e9e84..8bcbc54e1b48 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -99,4 +99,8 @@ extern ssize_t splice_from_pipe(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int, splice_actor *); +extern ssize_t __splice_from_pipe(struct pipe_inode_info *, struct file *, + loff_t *, size_t, unsigned int, + splice_actor *); + #endif diff --git a/mm/bounce.c b/mm/bounce.c index 643efbe82402..ad401fc57440 100644 --- a/mm/bounce.c +++ b/mm/bounce.c @@ -204,7 +204,7 @@ static void __blk_queue_bounce(request_queue_t *q, struct bio **bio_orig, /* * is destination page below bounce pfn? */ - if (page_to_pfn(page) < q->bounce_pfn) + if (page_to_pfn(page) <= q->bounce_pfn) continue; /*