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| author | Joonsoo Kim | 2016-10-08 01:58:30 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2016-10-08 03:46:27 +0200 |
| commit | 9300d8dfd282bd1473395c5c4c76bfdc90b05978 (patch) | |
| tree | 7e22780b9e02e88da9bf1bd49a78b61c4f340af2 /mm/filemap.c | |
| parent | mm/page_ext: support extra space allocation by page_ext user (diff) | |
| download | kernel-qcow2-linux-9300d8dfd282bd1473395c5c4c76bfdc90b05978.tar.gz kernel-qcow2-linux-9300d8dfd282bd1473395c5c4c76bfdc90b05978.tar.xz kernel-qcow2-linux-9300d8dfd282bd1473395c5c4c76bfdc90b05978.zip | |
mm/page_owner: don't define fields on struct page_ext by hard-coding
There is a memory waste problem if we define field on struct page_ext by
hard-coding. Entry size of struct page_ext includes the size of those
fields even if it is disabled at runtime. Now, extra memory request at
runtime is possible so page_owner don't need to define it's own fields
by hard-coding.
This patch removes hard-coded define and uses extra memory for storing
page_owner information in page_owner. Most of code are just mechanical
changes.
Link: http://lkml.kernel.org/r/1471315879-32294-7-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
0 files changed, 0 insertions, 0 deletions