diff options
Diffstat (limited to 'mm/zsmalloc.c')
| -rw-r--r-- | mm/zsmalloc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 62457eb82330..5ad75ec4151c 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -1969,6 +1969,14 @@ int zs_page_migrate(struct address_space *mapping, struct page *newpage, unsigned int obj_idx; int ret = -EAGAIN; + /* + * We cannot support the _NO_COPY case here, because copy needs to + * happen under the zs lock, which does not work with + * MIGRATE_SYNC_NO_COPY workflow. + */ + if (mode == MIGRATE_SYNC_NO_COPY) + return -EINVAL; + VM_BUG_ON_PAGE(!PageMovable(page), page); VM_BUG_ON_PAGE(!PageIsolated(page), page); |