Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:

 - procfs updates

 - various misc bits

 - lib/ updates

 - epoll updates

 - autofs

 - fatfs

 - a few more MM bits

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (58 commits)
  mm/page_io.c: fix polled swap page in
  checkpatch: add Co-developed-by to signature tags
  docs: fix Co-Developed-by docs
  drivers/base/platform.c: kmemleak ignore a known leak
  fs: don't open code lru_to_page()
  fs/: remove caller signal_pending branch predictions
  mm/: remove caller signal_pending branch predictions
  arch/arc/mm/fault.c: remove caller signal_pending_branch predictions
  kernel/sched/: remove caller signal_pending branch predictions
  kernel/locking/mutex.c: remove caller signal_pending branch predictions
  mm: select HAVE_MOVE_PMD on x86 for faster mremap
  mm: speed up mremap by 20x on large regions
  mm: treewide: remove unused address argument from pte_alloc functions
  initramfs: cleanup incomplete rootfs
  scripts/gdb: fix lx-version string output
  kernel/kcov.c: mark write_comp_data() as notrace
  kernel/sysctl: add panic_print into sysctl
  panic: add options to print system info when panic happens
  bfs: extra sanity checking and static inode bitmap
  exec: separate MM_ANONPAGES and RLIMIT_STACK accounting
  ...

14 files changed, 34 insertions, 57 deletions

diff --git a/include/asm-generic/bitops/builtin-fls.h b/include/asm-generic/bitops/builtin-fls.h
index 62daf940989d..c8455cc28841 100644
--- a/include/asm-generic/bitops/builtin-fls.h
+++ b/include/asm-generic/bitops/builtin-fls.h
@@ -9,7 +9,7 @@
  * This is defined the same way as ffs.
  * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
  */
-static __always_inline int fls(int x)
+static __always_inline int fls(unsigned int x)
 {
 	return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;
 }
diff --git a/include/asm-generic/bitops/fls.h b/include/asm-generic/bitops/fls.h
index 753aecaab641..b168bb10e1be 100644
--- a/include/asm-generic/bitops/fls.h
+++ b/include/asm-generic/bitops/fls.h
@@ -10,7 +10,7 @@
  * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
  */
 
-static __always_inline int fls(int x)
+static __always_inline int fls(unsigned int x)
 {
 	int r = 32;
 
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index e9f5fe69df31..03200a8c0178 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -25,6 +25,7 @@ struct linux_binprm {
 #endif
 	struct mm_struct *mm;
 	unsigned long p; /* current top of mem */
+	unsigned long argmin; /* rlimit marker for copy_strings() */
 	unsigned int
 		/*
 		 * True after the bprm_set_creds hook has been called once
diff --git a/include/linux/build_bug.h b/include/linux/build_bug.h
index 43d1fd50d433..faeec7433aab 100644
--- a/include/linux/build_bug.h
+++ b/include/linux/build_bug.h
@@ -5,21 +5,8 @@
 #include <linux/compiler.h>
 
 #ifdef __CHECKER__
-#define __BUILD_BUG_ON_NOT_POWER_OF_2(n) (0)
-#define BUILD_BUG_ON_NOT_POWER_OF_2(n) (0)
 #define BUILD_BUG_ON_ZERO(e) (0)
-#define BUILD_BUG_ON_INVALID(e) (0)
-#define BUILD_BUG_ON_MSG(cond, msg) (0)
-#define BUILD_BUG_ON(condition) (0)
-#define BUILD_BUG() (0)
 #else /* __CHECKER__ */
-
-/* Force a compilation error if a constant expression is not a power of 2 */
-#define __BUILD_BUG_ON_NOT_POWER_OF_2(n)	\
-	BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
-#define BUILD_BUG_ON_NOT_POWER_OF_2(n)			\
-	BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
-
 /*
  * Force a compilation error if condition is true, but also produce a
  * result (of value 0 and type size_t), so the expression can be used
@@ -27,6 +14,13 @@
  * aren't permitted).
  */
 #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:(-!!(e)); }))
+#endif /* __CHECKER__ */
+
+/* Force a compilation error if a constant expression is not a power of 2 */
+#define __BUILD_BUG_ON_NOT_POWER_OF_2(n)	\
+	BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
+#define BUILD_BUG_ON_NOT_POWER_OF_2(n)			\
+	BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
 
 /*
  * BUILD_BUG_ON_INVALID() permits the compiler to check the validity of the
@@ -51,23 +45,9 @@
  * If you have some code which relies on certain constants being equal, or
  * some other compile-time-evaluated condition, you should use BUILD_BUG_ON to
  * detect if someone changes it.
- *
- * The implementation uses gcc's reluctance to create a negative array, but gcc
- * (as of 4.4) only emits that error for obvious cases (e.g. not arguments to
- * inline functions).  Luckily, in 4.3 they added the "error" function
- * attribute just for this type of case.  Thus, we use a negative sized array
- * (should always create an error on gcc versions older than 4.4) and then call
- * an undefined function with the error attribute (should always create an
- * error on gcc 4.3 and later).  If for some reason, neither creates a
- * compile-time error, we'll still have a link-time error, which is harder to
- * track down.
  */
-#ifndef __OPTIMIZE__
-#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
-#else
 #define BUILD_BUG_ON(condition) \
 	BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
-#endif
 
 /**
  * BUILD_BUG - break compile if used.
@@ -78,6 +58,4 @@
  */
 #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
 
-#endif	/* __CHECKER__ */
-
 #endif	/* _LINUX_BUILD_BUG_H */
diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index 872f930f1b06..dd0a452373e7 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -51,7 +51,8 @@ typedef unsigned long (*genpool_algo_t)(unsigned long *map,
 			unsigned long size,
 			unsigned long start,
 			unsigned int nr,
-			void *data, struct gen_pool *pool);
+			void *data, struct gen_pool *pool,
+			unsigned long start_addr);
 
 /*
  *  General purpose special memory pool descriptor.
@@ -131,24 +132,24 @@ extern void gen_pool_set_algo(struct gen_pool *pool, genpool_algo_t algo,
 
 extern unsigned long gen_pool_first_fit(unsigned long *map, unsigned long size,
 		unsigned long start, unsigned int nr, void *data,
-		struct gen_pool *pool);
+		struct gen_pool *pool, unsigned long start_addr);
 
 extern unsigned long gen_pool_fixed_alloc(unsigned long *map,
 		unsigned long size, unsigned long start, unsigned int nr,
-		void *data, struct gen_pool *pool);
+		void *data, struct gen_pool *pool, unsigned long start_addr);
 
 extern unsigned long gen_pool_first_fit_align(unsigned long *map,
 		unsigned long size, unsigned long start, unsigned int nr,
-		void *data, struct gen_pool *pool);
+		void *data, struct gen_pool *pool, unsigned long start_addr);
 
 
 extern unsigned long gen_pool_first_fit_order_align(unsigned long *map,
 		unsigned long size, unsigned long start, unsigned int nr,
-		void *data, struct gen_pool *pool);
+		void *data, struct gen_pool *pool, unsigned long start_addr);
 
 extern unsigned long gen_pool_best_fit(unsigned long *map, unsigned long size,
 		unsigned long start, unsigned int nr, void *data,
-		struct gen_pool *pool);
+		struct gen_pool *pool, unsigned long start_addr);
 
 
 extern struct gen_pool *devm_gen_pool_create(struct device *dev,
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index d6aac75b51ba..8f0e68e250a7 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -527,6 +527,7 @@ static inline u32 int_sqrt64(u64 x)
 extern void bust_spinlocks(int yes);
 extern int oops_in_progress;		/* If set, an oops, panic(), BUG() or die() is in progress */
 extern int panic_timeout;
+extern unsigned long panic_print;
 extern int panic_on_oops;
 extern int panic_on_unrecovered_nmi;
 extern int panic_on_io_nmi;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index ea1f12d15365..80bb6408fe73 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -171,6 +171,8 @@ extern int overcommit_kbytes_handler(struct ctl_table *, int, void __user *,
 /* test whether an address (unsigned long or pointer) is aligned to PAGE_SIZE */
 #define PAGE_ALIGNED(addr)	IS_ALIGNED((unsigned long)(addr), PAGE_SIZE)
 
+#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
+
 /*
  * Linux kernel virtual memory manager primitives.
  * The idea being to have a "virtual" mm in the same way
@@ -1873,8 +1875,8 @@ static inline void mm_inc_nr_ptes(struct mm_struct *mm) {}
 static inline void mm_dec_nr_ptes(struct mm_struct *mm) {}
 #endif
 
-int __pte_alloc(struct mm_struct *mm, pmd_t *pmd, unsigned long address);
-int __pte_alloc_kernel(pmd_t *pmd, unsigned long address);
+int __pte_alloc(struct mm_struct *mm, pmd_t *pmd);
+int __pte_alloc_kernel(pmd_t *pmd);
 
 /*
  * The following ifdef needed to get the 4level-fixup.h header to work.
@@ -2005,18 +2007,17 @@ static inline void pgtable_page_dtor(struct page *page)
 	pte_unmap(pte);					\
 } while (0)
 
-#define pte_alloc(mm, pmd, address)			\
-	(unlikely(pmd_none(*(pmd))) && __pte_alloc(mm, pmd, address))
+#define pte_alloc(mm, pmd) (unlikely(pmd_none(*(pmd))) && __pte_alloc(mm, pmd))
 
 #define pte_alloc_map(mm, pmd, address)			\
-	(pte_alloc(mm, pmd, address) ? NULL : pte_offset_map(pmd, address))
+	(pte_alloc(mm, pmd) ? NULL : pte_offset_map(pmd, address))
 
 #define pte_alloc_map_lock(mm, pmd, address, ptlp)	\
-	(pte_alloc(mm, pmd, address) ?			\
+	(pte_alloc(mm, pmd) ?			\
 		 NULL : pte_offset_map_lock(mm, pmd, address, ptlp))
 
 #define pte_alloc_kernel(pmd, address)			\
-	((unlikely(pmd_none(*(pmd))) && __pte_alloc_kernel(pmd, address))? \
+	((unlikely(pmd_none(*(pmd))) && __pte_alloc_kernel(pmd))? \
 		NULL: pte_offset_kernel(pmd, address))
 
 #if USE_SPLIT_PMD_PTLOCKS
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 10191c28fc04..04ec454d44ce 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -124,7 +124,4 @@ static __always_inline enum lru_list page_lru(struct page *page)
 	}
 	return lru;
 }
-
-#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
-
 #endif
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 55aa96975fa2..77740a506ebb 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -264,7 +264,7 @@ static inline void show_regs_print_info(const char *log_lvl)
 {
 }
 
-static inline asmlinkage void dump_stack(void)
+static inline void dump_stack(void)
 {
 }
 
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index 108ede99e533..44c6f15800ff 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -39,6 +39,8 @@ void __noreturn do_task_dead(void);
 
 extern void proc_caches_init(void);
 
+extern void fork_init(void);
+
 extern void release_task(struct task_struct * p);
 
 #ifdef CONFIG_HAVE_COPY_THREAD_TLS
diff --git a/include/uapi/linux/auto_fs.h b/include/uapi/linux/auto_fs.h
index df31aa9c9a8c..082119630b49 100644
--- a/include/uapi/linux/auto_fs.h
+++ b/include/uapi/linux/auto_fs.h
@@ -23,7 +23,7 @@
 #define AUTOFS_MIN_PROTO_VERSION	3
 #define AUTOFS_MAX_PROTO_VERSION	5
 
-#define AUTOFS_PROTO_SUBVERSION		3
+#define AUTOFS_PROTO_SUBVERSION		4
 
 /*
  * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed
diff --git a/include/uapi/linux/bfs_fs.h b/include/uapi/linux/bfs_fs.h
index 940b04772af8..08f6b4956359 100644
--- a/include/uapi/linux/bfs_fs.h
+++ b/include/uapi/linux/bfs_fs.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 /*
  *	include/linux/bfs_fs.h - BFS data structures on disk.
- *	Copyright (C) 1999 Tigran Aivazian <tigran@veritas.com>
+ *	Copyright (C) 1999-2018 Tigran Aivazian <aivazian.tigran@gmail.com>
  */
 
 #ifndef _LINUX_BFS_FS_H
diff --git a/include/uapi/linux/msdos_fs.h b/include/uapi/linux/msdos_fs.h
index fde753735aba..a5773899f4d9 100644
--- a/include/uapi/linux/msdos_fs.h
+++ b/include/uapi/linux/msdos_fs.h
@@ -58,9 +58,6 @@
 #define MSDOS_DOT	".          "	/* ".", padded to MSDOS_NAME chars */
 #define MSDOS_DOTDOT	"..         "	/* "..", padded to MSDOS_NAME chars */
 
-#define FAT_FIRST_ENT(s, x)	((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : \
-	MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x))
-
 /* start of data cluster's entry (number of reserved clusters) */
 #define FAT_START_ENT	2
 
@@ -68,8 +65,6 @@
 #define MAX_FAT12	0xFF4
 #define MAX_FAT16	0xFFF4
 #define MAX_FAT32	0x0FFFFFF6
-#define MAX_FAT(s)	(MSDOS_SB(s)->fat_bits == 32 ? MAX_FAT32 : \
-	MSDOS_SB(s)->fat_bits == 16 ? MAX_FAT16 : MAX_FAT12)
 
 /* bad cluster mark */
 #define BAD_FAT12	0xFF7
@@ -135,7 +130,7 @@ struct fat_boot_sector {
 						   for mount state. */
 			__u8	signature;  /* extended boot signature */
 			__u8	vol_id[4];	/* volume ID */
-			__u8	vol_label[11];	/* volume label */
+			__u8	vol_label[MSDOS_NAME];	/* volume label */
 			__u8	fs_type[8];		/* file system type */
 			/* other fields are not added here */
 		} fat16;
@@ -158,7 +153,7 @@ struct fat_boot_sector {
 						   for mount state. */
 			__u8	signature;  /* extended boot signature */
 			__u8	vol_id[4];	/* volume ID */
-			__u8	vol_label[11];	/* volume label */
+			__u8	vol_label[MSDOS_NAME];	/* volume label */
 			__u8	fs_type[8];		/* file system type */
 			/* other fields are not added here */
 		} fat32;
diff --git a/include/uapi/linux/sysctl.h b/include/uapi/linux/sysctl.h
index d71013fffaf6..87aa2a6d9125 100644
--- a/include/uapi/linux/sysctl.h
+++ b/include/uapi/linux/sysctl.h
@@ -153,6 +153,7 @@ enum
 	KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */
 	KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */
 	KERN_PANIC_ON_WARN=77, /* int: call panic() in WARN() functions */
+	KERN_PANIC_PRINT=78, /* ulong: bitmask to print system info on panic */
 };