mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-12-27 11:06:41 -05:00
Code Issues Packages Projects Releases Wiki Activity

Docs/admin-guide/mm/zswap: s/red-black tree/xarray/

Browse Source 
The change from commit 796c2c23e1 ("zswap: replace RB tree with xarray")
is not reflected on the document.  Update the document.

Link: https://lkml.kernel.org/r/20251003203851.43128-5-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Acked-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Chris Li <chrisl@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park
2025-10-03 13:38:51 -07:00
committed by Andrew Morton
parent 1f52f3de4b
commit 0fdaa13ee9
1 changed files with 5 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
Documentation/admin-guide/mm/zswap.rst
View File

@@ -59,11 +59,11 @@ returned by the allocation routine and that handle must be mapped before being
accessed. The compressed memory pool grows on demand and shrinks as compressed
pages are freed. The pool is not preallocated.
When a swap page is passed from swapout to zswap, zswap maintains a mapping
of the swap entry, a combination of the swap type and swap offset, to the
zsmalloc handle that references that compressed swap page. This mapping is
achieved with a red-black tree per swap type. The swap offset is the search
key for the tree nodes.
When a swap page is passed from swapout to zswap, zswap maintains a mapping of
the swap entry, a combination of the swap type and swap offset, to the zsmalloc
handle that references that compressed swap page. This mapping is achieved
with an xarray per swap type. The swap offset is the search key for the xarray
nodes.
During a page fault on a PTE that is a swap entry, the swapin code calls the
zswap load function to decompress the page into the page allocated by the page