The tmp variable is used to copy_to_user(), it has better
performance if the address accesseed by ldp instruction
is 16 bytes aligned on arm64.
The performance of nginx test is improved after this patch:
http "Connection: close" 1.11%
http "Connection: keep-alive" 2.11%
https "Connection: close" 1.56%
https "Connection: keep-alive" 0.18%
Yang Yingliang (1):
fs/stat: make tmp variable 16-bytes aligned in copy stat
fs/stat.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
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2.25.1