diff options
Diffstat (limited to 'kernel/watch_queue.c')
| -rw-r--r-- | kernel/watch_queue.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/watch_queue.c b/kernel/watch_queue.c index 1895fbc32bcb..41e4e8070923 100644 --- a/kernel/watch_queue.c +++ b/kernel/watch_queue.c @@ -71,7 +71,7 @@ static void watch_queue_pipe_buf_release(struct pipe_inode_info *pipe, bit /= WATCH_QUEUE_NOTE_SIZE; page = buf->page; - bit += page->index; + bit += page->private; set_bit(bit, wqueue->notes_bitmap); generic_pipe_buf_release(pipe, buf); @@ -269,6 +269,15 @@ long watch_queue_set_size(struct pipe_inode_info *pipe, unsigned int nr_notes) if (ret < 0) goto error; + /* + * pipe_resize_ring() does not update nr_accounted for watch_queue + * pipes, because the above vastly overprovisions. Set nr_accounted on + * and max_usage this pipe to the number that was actually charged to + * the user above via account_pipe_buffers. + */ + pipe->max_usage = nr_pages; + pipe->nr_accounted = nr_pages; + ret = -ENOMEM; pages = kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL); if (!pages) @@ -278,7 +287,7 @@ long watch_queue_set_size(struct pipe_inode_info *pipe, unsigned int nr_notes) pages[i] = alloc_page(GFP_KERNEL); if (!pages[i]) goto error_p; - pages[i]->index = i * WATCH_QUEUE_NOTES_PER_PAGE; + pages[i]->private = i * WATCH_QUEUE_NOTES_PER_PAGE; } bitmap = bitmap_alloc(nr_notes, GFP_KERNEL); |