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authorSuren Baghdasaryan <[email protected]>2024-03-21 09:36:31 -0700
committerAndrew Morton <[email protected]>2024-04-25 20:55:51 -0700
commit53ce720359b8f4b531c5b8bd7fa06d74bca45f0a (patch)
tree1b3c12c0a574c7961b2a0e5dc96f9d6054bcd518 /include/linux
parent45012241ec5d5870d986e66c8ce20a0f6212e6f8 (diff)
slab: objext: introduce objext_flags as extension to page_memcg_data_flags
Introduce objext_flags to store additional objext flags unrelated to memcg. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Suren Baghdasaryan <[email protected]> Reviewed-by: Kees Cook <[email protected]> Reviewed-by: Pasha Tatashin <[email protected]> Reviewed-by: Vlastimil Babka <[email protected]> Tested-by: Kees Cook <[email protected]> Cc: Alexander Viro <[email protected]> Cc: Alex Gaynor <[email protected]> Cc: Alice Ryhl <[email protected]> Cc: Andreas Hindborg <[email protected]> Cc: Benno Lossin <[email protected]> Cc: "Björn Roy Baron" <[email protected]> Cc: Boqun Feng <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Dennis Zhou <[email protected]> Cc: Gary Guo <[email protected]> Cc: Kent Overstreet <[email protected]> Cc: Miguel Ojeda <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Tejun Heo <[email protected]> Cc: Wedson Almeida Filho <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/memcontrol.h29
1 files changed, 22 insertions, 7 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 99f423742324..12afc2647cf0 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -357,7 +357,22 @@ enum page_memcg_data_flags {
__NR_MEMCG_DATA_FLAGS = (1UL << 2),
};
-#define MEMCG_DATA_FLAGS_MASK (__NR_MEMCG_DATA_FLAGS - 1)
+#define __FIRST_OBJEXT_FLAG __NR_MEMCG_DATA_FLAGS
+
+#else /* CONFIG_MEMCG */
+
+#define __FIRST_OBJEXT_FLAG (1UL << 0)
+
+#endif /* CONFIG_MEMCG */
+
+enum objext_flags {
+ /* the next bit after the last actual flag */
+ __NR_OBJEXTS_FLAGS = __FIRST_OBJEXT_FLAG,
+};
+
+#define OBJEXTS_FLAGS_MASK (__NR_OBJEXTS_FLAGS - 1)
+
+#ifdef CONFIG_MEMCG
static inline bool folio_memcg_kmem(struct folio *folio);
@@ -391,7 +406,7 @@ static inline struct mem_cgroup *__folio_memcg(struct folio *folio)
VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_OBJEXTS, folio);
VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_KMEM, folio);
- return (struct mem_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
+ return (struct mem_cgroup *)(memcg_data & ~OBJEXTS_FLAGS_MASK);
}
/*
@@ -412,7 +427,7 @@ static inline struct obj_cgroup *__folio_objcg(struct folio *folio)
VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_OBJEXTS, folio);
VM_BUG_ON_FOLIO(!(memcg_data & MEMCG_DATA_KMEM), folio);
- return (struct obj_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
+ return (struct obj_cgroup *)(memcg_data & ~OBJEXTS_FLAGS_MASK);
}
/*
@@ -469,11 +484,11 @@ static inline struct mem_cgroup *folio_memcg_rcu(struct folio *folio)
if (memcg_data & MEMCG_DATA_KMEM) {
struct obj_cgroup *objcg;
- objcg = (void *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
+ objcg = (void *)(memcg_data & ~OBJEXTS_FLAGS_MASK);
return obj_cgroup_memcg(objcg);
}
- return (struct mem_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
+ return (struct mem_cgroup *)(memcg_data & ~OBJEXTS_FLAGS_MASK);
}
/*
@@ -512,11 +527,11 @@ static inline struct mem_cgroup *folio_memcg_check(struct folio *folio)
if (memcg_data & MEMCG_DATA_KMEM) {
struct obj_cgroup *objcg;
- objcg = (void *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
+ objcg = (void *)(memcg_data & ~OBJEXTS_FLAGS_MASK);
return obj_cgroup_memcg(objcg);
}
- return (struct mem_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
+ return (struct mem_cgroup *)(memcg_data & ~OBJEXTS_FLAGS_MASK);
}
static inline struct mem_cgroup *page_memcg_check(struct page *page)