staging: lustre: osc: avoid 64 divide in osc_cache_too_much

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The use of 64 bit time introduces an expensive 64 bit
division operation. Since the time lapse being calculated
in osc_cache_too_much will never be more than seventy years
we can cast the time lapse to an long and perform a normal
32 bit divison operation instead.

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8835
Reviewed-on: https://review.whamcloud.com/23814
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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James Simmons 2017-01-28 19:05:26 -05:00 • committed by Greg Kroah-Hartman

parent 1cf96da241

commit 86df59846c

1 changed files with 8 additions and 3 deletions

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drivers/staging/lustre/lustre/osc/osc_page.c

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