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mm: zswap: update comment for struct zswap_entry

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Since commit 0bb488498c ("mm: zswap: remove zswap_header"), the 'offset'
has been replaced by swpentry, update the comment for it, and also add
comment for 'objcg'.

Link: https://lkml.kernel.org/r/20230808062056.292950-1-xiujianfeng@huaweicloud.com
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Reviewed-by: Yosry Ahmed <yosryahmed@google.com>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Xiu Jianfeng 2023-08-08 06:20:56 +00:00 committed by Andrew Morton
parent 3f32c49ed6
commit 97157d8908
1 changed files with 2 additions and 1 deletions
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mm/zswap.c
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@ -182,7 +182,7 @@ struct zswap_pool {
* page within zswap. * page within zswap.
* *
* rbnode - links the entry into red-black tree for the appropriate swap type * rbnode - links the entry into red-black tree for the appropriate swap type
* offset - the swap offset for the entry. Index into the red-black tree. * swpentry - associated swap entry, the offset indexes into the red-black tree
* refcount - the number of outstanding reference to the entry. This is needed * refcount - the number of outstanding reference to the entry. This is needed
* to protect against premature freeing of the entry by code * to protect against premature freeing of the entry by code
* concurrent calls to load, invalidate, and writeback. The lock * concurrent calls to load, invalidate, and writeback. The lock
@ -195,6 +195,7 @@ struct zswap_pool {
* pool - the zswap_pool the entry's data is in * pool - the zswap_pool the entry's data is in
* handle - zpool allocation handle that stores the compressed page data * handle - zpool allocation handle that stores the compressed page data
* value - value of the same-value filled pages which have same content * value - value of the same-value filled pages which have same content
* objcg - the obj_cgroup that the compressed memory is charged to
* lru - handle to the pool's lru used to evict pages. * lru - handle to the pool's lru used to evict pages.
*/ */
struct zswap_entry { struct zswap_entry {