mm: move max_map_count bits into mm.h

max_map_count sysctl unrelated to scheduler. Move its bits from
include/linux/sched/sysctl.h to include/linux/mm.h.

Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/mm.h b/include/linux/mm.h
index dbf1eddab9646170580974eed619aace466e4e02..6922adf419387ae61771153c44d24eccadf842af 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -82,6 +82,27 @@ extern int mmap_rnd_compat_bits __read_mostly;
 #define mm_forbids_zeropage(X) (0)
 #endif
 
+/*
+ * Default maximum number of active map areas, this limits the number of vmas
+ * per mm struct. Users can overwrite this number by sysctl but there is a
+ * problem.
+ *
+ * When a program's coredump is generated as ELF format, a section is created
+ * per a vma. In ELF, the number of sections is represented in unsigned short.
+ * This means the number of sections should be smaller than 65535 at coredump.
+ * Because the kernel adds some informative sections to a image of program at
+ * generating coredump, we need some margin. The number of extra sections is
+ * 1-3 now and depends on arch. We use "5" as safe margin, here.
+ *
+ * ELF extended numbering allows more than 65535 sections, so 16-bit bound is
+ * not a hard limit any more. Although some userspace tools can be surprised by
+ * that.
+ */
+#define MAPCOUNT_ELF_CORE_MARGIN       (5)
+#define DEFAULT_MAX_MAP_COUNT  (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
+
+extern int sysctl_max_map_count;
+
 extern unsigned long sysctl_user_reserve_kbytes;
 extern unsigned long sysctl_admin_reserve_kbytes;
 

diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
index 4f080ab4f2cd1199f3f5aee15e7b06fdebb61333..22db1e63707ec26a191dd330548f3e3d125904eb 100644 (file)
--- a/include/linux/sched/sysctl.h
+++ b/include/linux/sched/sysctl.h
@@ -14,27 +14,6 @@ extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
 enum { sysctl_hung_task_timeout_secs = 0 };
 #endif
 
-/*
- * Default maximum number of active map areas, this limits the number of vmas
- * per mm struct. Users can overwrite this number by sysctl but there is a
- * problem.
- *
- * When a program's coredump is generated as ELF format, a section is created
- * per a vma. In ELF, the number of sections is represented in unsigned short.
- * This means the number of sections should be smaller than 65535 at coredump.
- * Because the kernel adds some informative sections to a image of program at
- * generating coredump, we need some margin. The number of extra sections is
- * 1-3 now and depends on arch. We use "5" as safe margin, here.
- *
- * ELF extended numbering allows more than 65535 sections, so 16-bit bound is
- * not a hard limit any more. Although some userspace tools can be surprised by
- * that.
- */
-#define MAPCOUNT_ELF_CORE_MARGIN       (5)
-#define DEFAULT_MAX_MAP_COUNT  (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
-
-extern int sysctl_max_map_count;
-
 extern unsigned int sysctl_sched_latency;
 extern unsigned int sysctl_sched_min_granularity;
 extern unsigned int sysctl_sched_wakeup_granularity;

diff --git a/mm/mmap.c b/mm/mmap.c
index 90e3b869a8b9daed1ed426dd8d2bec0ee950c785..676f422f2e2c94d103646adc76e920cc75a549cd 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -37,7 +37,6 @@
 #include <linux/khugepaged.h>
 #include <linux/uprobes.h>
 #include <linux/rbtree_augmented.h>
-#include <linux/sched/sysctl.h>
 #include <linux/notifier.h>
 #include <linux/memory.h>
 #include <linux/printk.h>

diff --git a/mm/mremap.c b/mm/mremap.c
index 8eeba02fc99137b5a47996750159de8a455e2c4d..e30c8a6489a6e607548eb96c57db8d0c0cd461b1 100644 (file)
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -20,7 +20,6 @@
 #include <linux/security.h>
 #include <linux/syscalls.h>
 #include <linux/mmu_notifier.h>
-#include <linux/sched/sysctl.h>
 #include <linux/uaccess.h>
 #include <linux/mm-arch-hooks.h>
 

diff --git a/mm/nommu.c b/mm/nommu.c
index fbf6f0f1d6c99ee2755b287847b9685ddfc26b51..9bdf8b119078004a823e49d6d85c6c21d1ea6aa8 100644 (file)
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -33,7 +33,6 @@
 #include <linux/security.h>
 #include <linux/syscalls.h>
 #include <linux/audit.h>
-#include <linux/sched/sysctl.h>
 #include <linux/printk.h>
 
 #include <asm/uaccess.h>