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mm/hugetlb: not necessary to coalesce regions recursively

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Patch series "mm/hugetlb: code refine and simplification", v4.

Following are some cleanups for hugetlb.  Simple testing with
tools/testing/selftests/vm/map_hugetlb passes.

This patch (of 7):

Per my understanding, we keep the regions ordered and would always
coalesce regions properly.  So the task to keep this property is just to
coalesce its neighbour.

Let's simplify this.

Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: https://lkml.kernel.org/r/20200901014636.29737-1-richard.weiyang@linux.alibaba.com
Link: https://lkml.kernel.org/r/20200831022351.20916-1-richard.weiyang@linux.alibaba.com
Link: https://lkml.kernel.org/r/20200831022351.20916-2-richard.weiyang@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Wei Yang 2020-10-13 16:56:20 -07:00 committed by Linus Torvalds
parent 540809be52
commit 7db5e7b67e
1 changed files with 1 additions and 5 deletions
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6
mm/hugetlb.c
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@ -309,8 +309,7 @@ static void coalesce_file_region(struct resv_map *resv, struct file_region *rg)
list_del(&rg->link);
kfree(rg);
coalesce_file_region(resv, prg);
return;
rg = prg;
}
nrg = list_next_entry(rg, link);
@ -320,9 +319,6 @@ static void coalesce_file_region(struct resv_map *resv, struct file_region *rg)
list_del(&rg->link);
kfree(rg);
coalesce_file_region(resv, nrg);
return;
}
}