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| author |   Jiri Benc <jbenc@redhat.com> | 2015-08-21 12:41:14 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-08-23 16:51:17 -0700 |
| commit | 751a587ac9f9a8bf314590fbac32d9e418060c5a (patch) | |
| tree | 9ddb90651ebd72777150a6af48f22f7f088b71fb /net/compat.c | |
| parent | Merge tag 'linux-can-next-for-4.3-20150820' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next (diff) | |
| download | linux-dev-751a587ac9f9a8bf314590fbac32d9e418060c5a.tar.xz linux-dev-751a587ac9f9a8bf314590fbac32d9e418060c5a.zip | |
route: fix breakage after moving lwtunnel state
__recnt and related fields need to be in its own cacheline for performance
reasons. Commit 61adedf3e3f1 ("route: move lwtunnel state to dst_entry")
broke that on 32bit archs, causing BUILD_BUG_ON in dst_hold to be triggered.
This patch fixes the breakage by moving the lwtunnel state to the end of
dst_entry on 32bit archs. Unfortunately, this makes it share the cacheline
with __refcnt and may affect performance, thus further patches may be
needed.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 61adedf3e3f1 ("route: move lwtunnel state to dst_entry")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/compat.c')
0 files changed, 0 insertions, 0 deletions