[PATCH v2 2/2] xarray: honor XA_FLAGS_ACCOUNT in xas_split_alloc()
Zi Yan <[email protected]>
| Newsgroups | gmane.linux.kernel,gmane.linux.file-systems,gmane.linux.kernel.mm |
|---|---|
| Message-ID | <20260730-add-gfp_account-to-xas_split_alloc-v2-2-5a56c2361d85@nvidia.com> |
XArray operations that allocate xa_nodes, such as xas_nomem() and
xas_alloc(), add __GFP_ACCOUNT when the array has XA_FLAGS_ACCOUNT set.
This charges the allocated memory and avoids the workingset convergence
issue described by commit 7b785645e8f13 ("mm: fix page cache convergence
regression").
xas_split_alloc() does not have that flag. Add it when necessary.
Fixes: 6b24ca4a1a8d4 ("mm: Use multi-index entries in the page cache")
Signed-off-by: Zi Yan <[email protected]>
---
lib/xarray.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lib/xarray.c b/lib/xarray.c
index 9a8b4916540cf..bfe7bef80f34e 100644
--- a/lib/xarray.c
+++ b/lib/xarray.c
@@ -1053,6 +1053,9 @@ void xas_split_alloc(struct xa_state *xas, void *entry, unsigned int order,
if (xas->xa_shift + XA_CHUNK_SHIFT > order)
return;
+ if (xas->xa->xa_flags & XA_FLAGS_ACCOUNT)
+ gfp |= __GFP_ACCOUNT;
+
do {
struct xa_node *node;
--
2.53.0