[PATCH 0/5] mm/vmalloc.c: improve readability and rewrite vmap_area

[Pengfei Li]

Hi,

This series of patches is to reduce the size of struct vmap_area.

Since the members of struct vmap_area are not being used at the same time,
it is possible to reduce its size by placing several members that are not
used at the same time in a union.

The first 4 patches did some preparatory work for this and improved
readability.

The fifth patch is the main patch, it did the work of rewriting vmap_area.

More details can be obtained from the commit message.

Thanks,

Pengfei

Pengfei Li (5):
  mm/vmalloc.c: Introduce a wrapper function of insert_vmap_area()
  mm/vmalloc.c: Introduce a wrapper function of
    insert_vmap_area_augment()
  mm/vmalloc.c: Rename function __find_vmap_area() for readability
  mm/vmalloc.c: Modify function merge_or_add_vmap_area() for readability
  mm/vmalloc.c: Rewrite struct vmap_area to reduce its size

 include/linux/vmalloc.h |  28 +++++---
 mm/vmalloc.c            | 144 +++++++++++++++++++++++++++-------------
 2 files changed, 117 insertions(+), 55 deletions(-)

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2.21.0