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mm: zpdesc: minor naming and comment corrections

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zpdesc is the page descriptor used by the zsmalloc backend allocator,
which in turn is used by zswap and zram.  The zpool layer is gone.

Link: https://lkml.kernel.org/r/20250829162212.208258-4-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Cc: Chengming Zhou <zhouchengming@bytedance.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Vitaly Wool <vitaly.wool@konsulko.se>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Johannes Weiner
2025-08-29 17:15:28 +01:00
committed by Andrew Morton
parent 2ccd9fecd9
commit 2f5bd89ba9
1 changed files with 7 additions and 7 deletions
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14
mm/zpdesc.h
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@@ -1,5 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* zpdesc.h: zswap.zpool memory descriptor
/* zpdesc.h: zsmalloc pool memory descriptor
*
* Written by Alex Shi <alexs@kernel.org>
* Hyeonggon Yoo <42.hyeyoo@gmail.com>
@@ -11,14 +11,14 @@
#include <linux/pagemap.h>
/*
* struct zpdesc - Memory descriptor for zpool memory.
* struct zpdesc - Memory descriptor for zsmalloc pool memory.
* @flags: Page flags, mostly unused by zsmalloc.
* @lru: Indirectly used by page migration.
* @movable_ops: Used by page migration.
* @next: Next zpdesc in a zspage in zsmalloc zpool.
* @handle: For huge zspage in zsmalloc zpool.
* @next: Next zpdesc in a zspage in zsmalloc pool.
* @handle: For huge zspage in zsmalloc pool.
* @zspage: Points to the zspage this zpdesc is a part of.
* @first_obj_offset: First object offset in zsmalloc zpool.
* @first_obj_offset: First object offset in zsmalloc pool.
* @_refcount: The number of references to this zpdesc.
*
* This struct overlays struct page for now. Do not modify without a good
@@ -79,8 +79,8 @@ static_assert(sizeof(struct zpdesc) <= sizeof(struct page));
* zpdesc_folio - The folio allocated for a zpdesc
* @zp: The zpdesc.
*
* Zpdescs are descriptors for zpool memory. The zpool memory itself is
* allocated as folios that contain the zpool objects, and zpdesc uses specific
* Zpdescs are descriptors for zsmalloc memory. The memory itself is allocated
* as folios that contain the zsmalloc objects, and zpdesc uses specific
* fields in the first struct page of the folio - those fields are now accessed
* by struct zpdesc.
*