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author | Doron Roberts-Kedes <doronrk@fb.com> | 2018-07-26 00:48:21 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2018-07-27 00:11:34 +0300 |
commit | 0a26cf3ff47d9e70fbed2fa79b0678ee70e25113 (patch) | |
tree | 2074e891ca6150854be948a07a4aa60d13ab3069 /init/calibrate.c | |
parent | 2ed9db3074fcd8d12709fe40ff0e691d74229818 (diff) | |
download | linux-0a26cf3ff47d9e70fbed2fa79b0678ee70e25113.tar.xz |
tls: Skip zerocopy path for ITER_KVEC
The zerocopy path ultimately calls iov_iter_get_pages, which defines the
step function for ITER_KVECs as simply, return -EFAULT. Taking the
non-zerocopy path for ITER_KVECs avoids the unnecessary fallback.
See https://lore.kernel.org/lkml/20150401023311.GL29656@ZenIV.linux.org.uk/T/#u
for a discussion of why zerocopy for vmalloc data is not a good idea.
Discovered while testing NBD traffic encrypted with ktls.
Fixes: c46234ebb4d1 ("tls: RX path for ktls")
Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'init/calibrate.c')
0 files changed, 0 insertions, 0 deletions