On Thu, 8 Nov 2012, Robert Jarzmik wrote:
> --- a/mm/filemap.c
> +++ b/mm/filemap.c
> @@ -467,6 +471,7 @@ int add_to_page_cache_locked(struct page *page, struct
> address_space *mapping,
> } else {
> page->mapping = NULL;
> /* Leave page->index set: truncation relies upon it */
> + trace_mm_filemap_add_to_page_cache(page);
> spin_unlock_irq(&mapping->tree_lock);
> mem_cgroup_uncharge_cache_page(page);
> page_cache_release(page);
I doubt if you really want your tracepoint sited just in this error path.
Hugh
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