Merge branch 'akpm' (patches from Andrew)

Merge third patch-bomb from Andrew Morton:
 "I'm pretty much done for -rc1 now:

   - the rest of MM, basically

   - lib/ updates

   - checkpatch, epoll, hfs, fatfs, ptrace, coredump, exit

   - cpu_mask simplifications

   - kexec, rapidio, MAINTAINERS etc, etc.

   - more dma-mapping cleanups/simplifications from hch"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits)
  MAINTAINERS: add/fix git URLs for various subsystems
  mm: memcontrol: add "sock" to cgroup2 memory.stat
  mm: memcontrol: basic memory statistics in cgroup2 memory controller
  mm: memcontrol: do not uncharge old page in page cache replacement
  Documentation: cgroup: add memory.swap.{current,max} description
  mm: free swap cache aggressively if memcg swap is full
  mm: vmscan: do not scan anon pages if memcg swap limit is hit
  swap.h: move memcg related stuff to the end of the file
  mm: memcontrol: replace mem_cgroup_lruvec_online with mem_cgroup_online
  mm: vmscan: pass memcg to get_scan_count()
  mm: memcontrol: charge swap to cgroup2
  mm: memcontrol: clean up alloc, online, offline, free functions
  mm: memcontrol: flatten struct cg_proto
  mm: memcontrol: rein in the CONFIG space madness
  net: drop tcp_memcontrol.c
  mm: memcontrol: introduce CONFIG_MEMCG_LEGACY_KMEM
  mm: memcontrol: allow to disable kmem accounting for cgroup2
  mm: memcontrol: account "kmem" consumers in cgroup2 memory controller
  mm: memcontrol: move kmem accounting code to CONFIG_MEMCG
  mm: memcontrol: separate kmem code from legacy tcp accounting code
  ...

4 files changed, 18 insertions, 25 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 5b86082..2232080 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -964,17 +964,6 @@ config MEMCG_SWAP_ENABLED
 	  For those who want to have the feature enabled by default should
 	  select this option (if, for some reason, they need to disable it
 	  then swapaccount=0 does the trick).
-config MEMCG_KMEM
-	bool "Memory Resource Controller Kernel Memory accounting"
-	depends on MEMCG
-	depends on SLUB || SLAB
-	help
-	  The Kernel Memory extension for Memory Resource Controller can limit
-	  the amount of memory used by kernel objects in the system. Those are
-	  fundamentally different from the entities handled by the standard
-	  Memory Controller, which are page-based, and can be swapped. Users of
-	  the kmem extension can use it to guarantee that no group of processes
-	  will ever exhaust kernel resources alone.
 
 config BLK_CGROUP
 	bool "IO controller"
@@ -1071,6 +1060,11 @@ config CGROUP_FREEZER
 	  Provides a way to freeze and unfreeze all tasks in a
 	  cgroup.
 
+	  This option affects the ORIGINAL cgroup interface. The cgroup2 memory
+	  controller includes important in-kernel memory consumers per default.
+
+	  If you're using cgroup2, say N.
+
 config CGROUP_HUGETLB
 	bool "HugeTLB controller"
 	depends on HUGETLB_PAGE
@@ -1182,10 +1176,9 @@ config USER_NS
 	  to provide different user info for different servers.
 
 	  When user namespaces are enabled in the kernel it is
-	  recommended that the MEMCG and MEMCG_KMEM options also be
-	  enabled and that user-space use the memory control groups to
-	  limit the amount of memory a memory unprivileged users can
-	  use.
+	  recommended that the MEMCG option also be enabled and that
+	  user-space use the memory control groups to limit the amount
+	  of memory a memory unprivileged users can use.
 
 	  If unsure, say N.
 
diff --git a/init/do_mounts.h b/init/do_mounts.h
index f5b978a..067af1d 100644
--- a/init/do_mounts.h
+++ b/init/do_mounts.h
@@ -57,11 +57,11 @@ static inline int rd_load_image(char *from) { return 0; }
 
 #ifdef CONFIG_BLK_DEV_INITRD
 
-int __init initrd_load(void);
+bool __init initrd_load(void);
 
 #else
 
-static inline int initrd_load(void) { return 0; }
+static inline bool initrd_load(void) { return false; }
 
 #endif
 
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index 3e0878e..a1000ca 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -116,7 +116,7 @@ static void __init handle_initrd(void)
 	}
 }
 
-int __init initrd_load(void)
+bool __init initrd_load(void)
 {
 	if (mount_initrd) {
 		create_dev("/dev/ram", Root_RAM0);
@@ -129,9 +129,9 @@ int __init initrd_load(void)
 		if (rd_load_image("/initrd.image") && ROOT_DEV != Root_RAM0) {
 			sys_unlink("/initrd.image");
 			handle_initrd();
-			return 1;
+			return true;
 		}
 	}
 	sys_unlink("/initrd.image");
-	return 0;
+	return false;
 }
diff --git a/init/main.c b/init/main.c
index c6ebefa..58c9e37 100644
--- a/init/main.c
+++ b/init/main.c
@@ -164,10 +164,10 @@ static const char *panic_later, *panic_param;
 
 extern const struct obs_kernel_param __setup_start[], __setup_end[];
 
-static int __init obsolete_checksetup(char *line)
+static bool __init obsolete_checksetup(char *line)
 {
 	const struct obs_kernel_param *p;
-	int had_early_param = 0;
+	bool had_early_param = false;
 
 	p = __setup_start;
 	do {
@@ -179,13 +179,13 @@ static int __init obsolete_checksetup(char *line)
 				 * Keep iterating, as we can have early
 				 * params and __setups of same names 8( */
 				if (line[n] == '\0' || line[n] == '=')
-					had_early_param = 1;
+					had_early_param = true;
 			} else if (!p->setup_func) {
 				pr_warn("Parameter %s is obsolete, ignored\n",
 					p->str);
-				return 1;
+				return true;
 			} else if (p->setup_func(line + n))
-				return 1;
+				return true;
 		}
 		p++;
 	} while (p < __setup_end);