Merge tag 'mm-nonmm-stable-2023-02-20-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:
 "There is no particular theme here - mainly quick hits all over the
  tree.

  Most notable is a set of zlib changes from Mikhail Zaslonko which
  enhances and fixes zlib's use of S390 hardware support: 'lib/zlib: Set
  of s390 DFLTCC related patches for kernel zlib'"

* tag 'mm-nonmm-stable-2023-02-20-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (55 commits)
  Update CREDITS file entry for Jesper Juhl
  sparc: allow PM configs for sparc32 COMPILE_TEST
  hung_task: print message when hung_task_warnings gets down to zero.
  arch/Kconfig: fix indentation
  scripts/tags.sh: fix the Kconfig tags generation when using latest ctags
  nilfs2: prevent WARNING in nilfs_dat_commit_end()
  lib/zlib: remove redundation assignement of avail_in dfltcc_gdht()
  lib/Kconfig.debug: do not enable DEBUG_PREEMPT by default
  lib/zlib: DFLTCC always switch to software inflate for Z_PACKET_FLUSH option
  lib/zlib: DFLTCC support inflate with small window
  lib/zlib: Split deflate and inflate states for DFLTCC
  lib/zlib: DFLTCC not writing header bits when avail_out == 0
  lib/zlib: fix DFLTCC ignoring flush modes when avail_in == 0
  lib/zlib: fix DFLTCC not flushing EOBS when creating raw streams
  lib/zlib: implement switching between DFLTCC and software
  lib/zlib: adjust offset calculation for dfltcc_state
  nilfs2: replace WARN_ONs for invalid DAT metadata block requests
  scripts/spelling.txt: add "exsits" pattern and fix typo instances
  fs: gracefully handle ->get_block not mapping bh in __mpage_writepage
  cramfs: Kconfig: fix spelling & punctuation
  ...

5 files changed, 14 insertions, 7 deletions

diff --git a/include/asm-generic/error-injection.h b/include/asm-generic/error-injection.h
index fbca56bd9cbc..b05253f68eaa 100644
--- a/include/asm-generic/error-injection.h
+++ b/include/asm-generic/error-injection.h
@@ -4,7 +4,6 @@
 
 #if defined(__KERNEL__) && !defined(__ASSEMBLY__)
 enum {
-	EI_ETYPE_NONE,		/* Dummy value for undefined case */
 	EI_ETYPE_NULL,		/* Return NULL if failure */
 	EI_ETYPE_ERRNO,		/* Return -ERRNO if failure */
 	EI_ETYPE_ERRNO_NULL,	/* Return -ERRNO or NULL if failure */
@@ -20,8 +19,10 @@ struct pt_regs;
 
 #ifdef CONFIG_FUNCTION_ERROR_INJECTION
 /*
- * Whitelist generating macro. Specify functions which can be
- * error-injectable using this macro.
+ * Whitelist generating macro. Specify functions which can be error-injectable
+ * using this macro. If you unsure what is required for the error-injectable
+ * functions, please read Documentation/fault-injection/fault-injection.rst
+ * 'Error Injectable Functions' section.
  */
 #define ALLOW_ERROR_INJECTION(fname, _etype)				\
 static struct error_injection_entry __used				\
diff --git a/include/linux/error-injection.h b/include/linux/error-injection.h
index 635a95caf29f..20e738f4eae8 100644
--- a/include/linux/error-injection.h
+++ b/include/linux/error-injection.h
@@ -3,6 +3,7 @@
 #define _LINUX_ERROR_INJECTION_H
 
 #include <linux/compiler.h>
+#include <linux/errno.h>
 #include <asm-generic/error-injection.h>
 
 #ifdef CONFIG_FUNCTION_ERROR_INJECTION
@@ -19,7 +20,7 @@ static inline bool within_error_injection_list(unsigned long addr)
 
 static inline int get_injectable_error_type(unsigned long addr)
 {
-	return EI_ETYPE_NONE;
+	return -EOPNOTSUPP;
 }
 
 #endif
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 5dd4343c1bbe..6883c5922701 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -403,7 +403,8 @@ extern int kimage_crash_copy_vmcoreinfo(struct kimage *image);
 
 extern struct kimage *kexec_image;
 extern struct kimage *kexec_crash_image;
-extern int kexec_load_disabled;
+
+bool kexec_load_permitted(int kexec_image_type);
 
 #ifndef kexec_flush_icache_page
 #define kexec_flush_icache_page(page)
diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h
index a3aae8d57a42..521a733e21a9 100644
--- a/include/linux/percpu_counter.h
+++ b/include/linux/percpu_counter.h
@@ -152,9 +152,11 @@ __percpu_counter_compare(struct percpu_counter *fbc, s64 rhs, s32 batch)
 static inline void
 percpu_counter_add(struct percpu_counter *fbc, s64 amount)
 {
-	preempt_disable();
+	unsigned long flags;
+
+	local_irq_save(flags);
 	fbc->count += amount;
-	preempt_enable();
+	local_irq_restore(flags);
 }
 
 /* non-SMP percpu_counter_add_local is the same with percpu_counter_add */
diff --git a/include/linux/util_macros.h b/include/linux/util_macros.h
index 43db6e47503c..6bb460c3e818 100644
--- a/include/linux/util_macros.h
+++ b/include/linux/util_macros.h
@@ -2,6 +2,8 @@
 #ifndef _LINUX_HELPER_MACROS_H_
 #define _LINUX_HELPER_MACROS_H_
 
+#include <linux/math.h>
+
 #define __find_closest(x, a, as, op)					\
 ({									\
 	typeof(as) __fc_i, __fc_as = (as) - 1;				\