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| author | Wei Yang | 2017-05-03 23:53:51 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2017-05-04 00:52:09 +0200 |
| commit | 60a7a88dbb9fc9adcca78a10a3ecf36966b5a45c (patch) | |
| tree | 67bc60057a09cbe1082c83cbd85ba4b9d9a27f11 /mm/compaction.c | |
| parent | mm: page_alloc: __GFP_NOWARN shouldn't suppress stall warnings (diff) | |
| download | kernel-qcow2-linux-60a7a88dbb9fc9adcca78a10a3ecf36966b5a45c.tar.gz kernel-qcow2-linux-60a7a88dbb9fc9adcca78a10a3ecf36966b5a45c.tar.xz kernel-qcow2-linux-60a7a88dbb9fc9adcca78a10a3ecf36966b5a45c.zip | |
mm/sparse: refine usemap_size() a little
The current implementation calculates usemap_size in two steps:
* calculate number of bytes to cover these bits
* calculate number of "unsigned long" to cover these bytes
It would be more clear by:
* calculate number of "unsigned long" to cover these bits
* multiple it with sizeof(unsigned long)
This patch refine usemap_size() a little to make it more easy to
understand.
Link: http://lkml.kernel.org/r/20170310043713.96871-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/compaction.c')
0 files changed, 0 insertions, 0 deletions