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authorLinus Torvalds <torvalds@linux-foundation.org>2020-06-11 13:25:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-11 13:25:53 -0700
commit623f6dc593eaf98b91916836785278eddddaacf8 (patch)
tree8a50c706ca3f8f1842b47b3091e7d38f5b9c0b21 /include
parent5cd221e837d6fe2a4d284360581be3fdcbf79734 (diff)
parent37c54f9bd48663f7657a9178fe08c47e4f5b537b (diff)
Merge branch 'akpm' (patches from Andrew)
Merge some more updates from Andrew Morton: - various hotfixes and minor things - hch's use_mm/unuse_mm clearnups Subsystems affected by this patch series: mm/hugetlb, scripts, kcov, lib, nilfs, checkpatch, lib, mm/debug, ocfs2, lib, misc. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: kernel: set USER_DS in kthread_use_mm kernel: better document the use_mm/unuse_mm API contract kernel: move use_mm/unuse_mm to kthread.c kernel: move use_mm/unuse_mm to kthread.c stacktrace: cleanup inconsistent variable type lib: test get_count_order/long in test_bitops.c mm: add comments on pglist_data zones ocfs2: fix spelling mistake and grammar mm/debug_vm_pgtable: fix kernel crash by checking for THP support lib: fix bitmap_parse() on 64-bit big endian archs checkpatch: correct check for kernel parameters doc nilfs2: fix null pointer dereference at nilfs_segctor_do_construct() lib/lz4/lz4_decompress.c: document deliberate use of `&' kcov: check kcov_softirq in kcov_remote_stop() scripts/spelling: add a few more typos khugepaged: selftests: fix timeout condition in wait_for_scan()
Diffstat (limited to 'include')
-rw-r--r--include/linux/kthread.h5
-rw-r--r--include/linux/mmu_context.h5
-rw-r--r--include/linux/mmzone.h14
-rw-r--r--include/linux/stacktrace.h2
4 files changed, 19 insertions, 7 deletions
diff --git a/include/linux/kthread.h b/include/linux/kthread.h
index c2a274b79c42..65b81e0c494d 100644
--- a/include/linux/kthread.h
+++ b/include/linux/kthread.h
@@ -5,6 +5,8 @@
#include <linux/err.h>
#include <linux/sched.h>
+struct mm_struct;
+
__printf(4, 5)
struct task_struct *kthread_create_on_node(int (*threadfn)(void *data),
void *data,
@@ -199,6 +201,9 @@ bool kthread_cancel_delayed_work_sync(struct kthread_delayed_work *work);
void kthread_destroy_worker(struct kthread_worker *worker);
+void kthread_use_mm(struct mm_struct *mm);
+void kthread_unuse_mm(struct mm_struct *mm);
+
struct cgroup_subsys_state;
#ifdef CONFIG_BLK_CGROUP
diff --git a/include/linux/mmu_context.h b/include/linux/mmu_context.h
index d9a543a9e1cc..c51a84132d7c 100644
--- a/include/linux/mmu_context.h
+++ b/include/linux/mmu_context.h
@@ -4,11 +4,6 @@
#include <asm/mmu_context.h>
-struct mm_struct;
-
-void use_mm(struct mm_struct *mm);
-void unuse_mm(struct mm_struct *mm);
-
/* Architectures that care about IRQ state in switch_mm can override this. */
#ifndef switch_mm_irqs_off
# define switch_mm_irqs_off switch_mm
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index df1f08486d81..c4c37fd12104 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -660,9 +660,21 @@ struct deferred_split {
* per-zone basis.
*/
typedef struct pglist_data {
+ /*
+ * node_zones contains just the zones for THIS node. Not all of the
+ * zones may be populated, but it is the full list. It is referenced by
+ * this node's node_zonelists as well as other node's node_zonelists.
+ */
struct zone node_zones[MAX_NR_ZONES];
+
+ /*
+ * node_zonelists contains references to all zones in all nodes.
+ * Generally the first zones will be references to this node's
+ * node_zones.
+ */
struct zonelist node_zonelists[MAX_ZONELISTS];
- int nr_zones;
+
+ int nr_zones; /* number of populated zones in this node */
#ifdef CONFIG_FLAT_NODE_MEM_MAP /* means !SPARSEMEM */
struct page *node_mem_map;
#ifdef CONFIG_PAGE_EXTENSION
diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h
index 83bd8cb475d7..b7af8cc13eda 100644
--- a/include/linux/stacktrace.h
+++ b/include/linux/stacktrace.h
@@ -64,7 +64,7 @@ void arch_stack_walk_user(stack_trace_consume_fn consume_entry, void *cookie,
struct stack_trace {
unsigned int nr_entries, max_entries;
unsigned long *entries;
- int skip; /* input argument: How many entries to skip */
+ unsigned int skip; /* input argument: How many entries to skip */
};
extern void save_stack_trace(struct stack_trace *trace);