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ANDROID: add vendor fields to swap_slots_cache to support multiple swap devices

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struct swap_slots_cache  :: ANDROID_VENDOR_DATA(1)
1) Multiple swap devices can be supported;
2) There are different kinds of data;
3) During data reclamation, different types of data are exchanged
   to different swap devices;
4) Each swap device has corresponding arrays of slots and slots_ret;
5) Each swap device has corresponding indexes of nr, cur and n_ret;
6) This field is a pointer, it points to a struct which contains
   all the other arrays and indexes;

Bug: 225795494
Change-Id: Icf116135926be98449a2d96fc458e58e5ad3b7e9
Signed-off-by: Bing Han <bing.han@transsion.com>
This commit is contained in:
Bing Han
2022-04-15 08:21:49 +00:00
committed by Todd Kjos
parent 1b14ae01b0
commit a034320a68
1 changed files with 1 additions and 0 deletions
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include/linux/swap_slots.h
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@@ -19,6 +19,7 @@ struct swap_slots_cache {
spinlock_t free_lock; /* protects slots_ret, n_ret */
swp_entry_t *slots_ret;
int n_ret;
ANDROID_VENDOR_DATA(1);
};
void disable_swap_slots_cache_lock(void);