| commit | 95d78c28b5a85bacbc29b8dba7c04babb9b0d467 | [log] [tgz] |
|---|---|---|
| author | Vitaly Mayatskikh <v.mayatskih@gmail.com> | Fri Sep 22 01:18:39 2017 -0400 |
| committer | Al Viro <viro@zeniv.linux.org.uk> | Tue Oct 10 23:54:51 2017 -0400 |
| tree | 171528916186018b071110eced6ebc55f5d6b3c3 | |
| parent | 899f0429c7d3eed886406cd72182bee3b96aa1f9 [diff] |
fix unbalanced page refcounting in bio_map_user_iov bio_map_user_iov and bio_unmap_user do unbalanced pages refcounting if IO vector has small consecutive buffers belonging to the same page. bio_add_pc_page merges them into one, but the page reference is never dropped. Cc: stable@vger.kernel.org Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>