When freeing objects, the slob allocator currently free empty pages calling __free_pages(). However, page-size kmallocs are disposed using put_page() instead.
It makes no sense to call put_page() for kernel pages that are provided by the object allocator, so we shouldn't be doing this ourselves. This is based on: commit d9b7f22623b5fa9cc189581dcdfb2ac605933bf4 Author: Glauber Costa <[email protected]> slub: use free_page instead of put_page for freeing kmalloc allocation Cc: Christoph Lameter <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: Matt Mackall <[email protected]> Cc: Glauber Costa <[email protected]> Signed-off-by: Ezequiel Garcia <[email protected]> --- mm/slob.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/slob.c b/mm/slob.c index a65e802..362632d 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -506,7 +506,7 @@ void kfree(const void *block) unsigned int *m = (unsigned int *)(block - align); slob_free(m, *m + align); } else - put_page(sp); + __free_pages(sp, compound_order(sp)); } EXPORT_SYMBOL(kfree); -- 1.7.8.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
