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PM: hibernate: improve arithmetic division in preallocate_highmem_fraction()
authorWen Yang <wenyang@linux.alibaba.com>
Fri, 3 Jan 2020 15:54:58 +0000 (23:54 +0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 7 Jan 2020 11:42:56 +0000 (12:42 +0100)
commit809ed78a832df8b4ef81fee03570566c8f088f3a
treef6d2756479859f245c57e13cbb045bf637d38832tree | snapshot
parente976eb4b91e906f20ec25b20c152d53c472fc3fdcommit | diff
PM: hibernate: improve arithmetic division in preallocate_highmem_fraction()

do_div() does a 64-by-32 division. Use div64_u64() instead of
do_div() if the divisor is u64, to avoid truncation to 32-bit.

This change also cleans up code a tad.

Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
kernel/power/snapshot.c diff | blob | history
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