From: Willem de Bruijn <will...@google.com> skb frags may be backed by highmem and/or compound pages. Various code calls kmap_atomic to safely access highmem pages. But this needs additional care for compound pages. Fix a few issues:
patch 1 expect kmap mappings with CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP patch 2 fixes kmap_atomic + compound page support in skb_seq_read patch 3 fixes kmap_atomic + compound page support in esp changes v1->v2 - in patch 2, increase frag_off size from u16 to u32 Willem de Bruijn (3): net: support kmap_local forced debugging in skb_frag_foreach net: compound page support in skb_seq_read esp: avoid unneeded kmap_atomic call include/linux/skbuff.h | 3 ++- net/core/skbuff.c | 28 +++++++++++++++++++++++----- net/ipv4/esp4.c | 7 +------ net/ipv6/esp6.c | 7 +------ 4 files changed, 27 insertions(+), 18 deletions(-) -- 2.30.0.284.gd98b1dd5eaa7-goog
