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| author | Vitaly Mayatskikh <v.mayatskih@gmail.com> | 2017-09-22 01:18:39 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-18 09:35:41 +0200 |
| commit | 5444d8ab9a1406af9f1bc2f00c26838637542480 (patch) | |
| tree | 4470222da245ca5e9c56152c86858c1c5841b18f /Documentation | |
| parent | f9139a1a2457323894c1780f0e44271af807346d (diff) | |
fix unbalanced page refcounting in bio_map_user_iov
commit 95d78c28b5a85bacbc29b8dba7c04babb9b0d467 upstream.
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.
Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions