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Subject[PATCH] Remove fs.h from mm.h
0) Remove fs.h from mm.h. For this,
1) Uninline vma_wants_writenotify(). It's pretty huge anyway.
2) Add back fs.h or less bloated headers (err.h) to files that need it.

As result, on x86_64 allyesconfig, fs.h dependencies cut down from 3929 files
rebuilt down to 3444 (-12.3%).

Cross-compile tested without regressions on my two usual configs and (sigh):

alpha arm-mx1ads mips-bigsur powerpc-ebony
alpha-allnoconfig arm-neponset mips-capcella powerpc-g5
alpha-defconfig arm-netwinder mips-cobalt powerpc-holly
alpha-up arm-netx mips-db1000 powerpc-iseries
arm arm-ns9xxx mips-db1100 powerpc-linkstation
arm-assabet arm-omap_h2_1610 mips-db1200 powerpc-lite5200
arm-at91rm9200dk arm-onearm mips-db1500 powerpc-maple
arm-at91rm9200ek arm-picotux200 mips-db1550 powerpc-mpc7448_hpc2
arm-at91sam9260ek arm-pleb mips-ddb5477 powerpc-mpc8272_ads
arm-at91sam9261ek arm-pnx4008 mips-decstation powerpc-mpc8313_rdb
arm-at91sam9263ek arm-pxa255-idp mips-e55 powerpc-mpc832x_mds
arm-at91sam9rlek arm-realview mips-emma2rh powerpc-mpc832x_rdb
arm-ateb9200 arm-realview-smp mips-excite powerpc-mpc834x_itx
arm-badge4 arm-rpc mips-fulong powerpc-mpc834x_itxgp
arm-carmeva arm-s3c2410 mips-ip22 powerpc-mpc834x_mds
arm-cerfcube arm-shannon mips-ip27 powerpc-mpc836x_mds
arm-clps7500 arm-shark mips-ip32 powerpc-mpc8540_ads
arm-collie arm-simpad mips-jazz powerpc-mpc8544_ds
arm-corgi arm-spitz mips-jmr3927 powerpc-mpc8560_ads
arm-csb337 arm-trizeps4 mips-malta powerpc-mpc8568mds
arm-csb637 arm-versatile mips-mipssim powerpc-mpc85xx_cds
arm-ebsa110 i386 mips-mpc30x powerpc-mpc8641_hpcn
arm-edb7211 i386-allnoconfig mips-msp71xx powerpc-mpc866_ads
arm-em_x270 i386-defconfig mips-ocelot powerpc-mpc885_ads
arm-ep93xx i386-up mips-pb1100 powerpc-pasemi
arm-footbridge ia64 mips-pb1500 powerpc-pmac32
arm-fortunet ia64-allnoconfig mips-pb1550 powerpc-ppc64
arm-h3600 ia64-bigsur mips-pnx8550-jbs powerpc-prpmc2800
arm-h7201 ia64-defconfig mips-pnx8550-stb810 powerpc-ps3
arm-h7202 ia64-gensparse mips-qemu powerpc-pseries
arm-hackkit ia64-sim mips-rbhma4200 powerpc-up
arm-integrator ia64-sn2 mips-rbhma4500 s390
arm-iop13xx ia64-tiger mips-rm200 s390-allnoconfig
arm-iop32x ia64-up mips-sb1250-swarm s390-defconfig
arm-iop33x ia64-zx1 mips-sead s390-up
arm-ixp2000 m68k mips-tb0219 sparc
arm-ixp23xx m68k-amiga mips-tb0226 sparc-allnoconfig
arm-ixp4xx m68k-apollo mips-tb0287 sparc-defconfig
arm-jornada720 m68k-atari mips-workpad sparc-up
arm-kafa m68k-bvme6000 mips-wrppmc sparc64
arm-kb9202 m68k-hp300 mips-yosemite sparc64-allnoconfig
arm-ks8695 m68k-mac parisc sparc64-defconfig
arm-lart m68k-mvme147 parisc-allnoconfig sparc64-up
arm-lpd270 m68k-mvme16x parisc-defconfig um-x86_64
arm-lpd7a400 m68k-q40 parisc-up x86_64
arm-lpd7a404 m68k-sun3 powerpc x86_64-allnoconfig
arm-lubbock m68k-sun3x powerpc-cell x86_64-defconfig
arm-lusl7200 mips powerpc-celleb x86_64-up
arm-mainstone mips-atlas powerpc-chrp32

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

arch/alpha/kernel/smp.c | 1
arch/arm/kernel/setup.c | 1
arch/arm/kernel/smp.c | 1
arch/frv/kernel/sys_frv.c | 1
arch/i386/kernel/microcode.c | 1
arch/i386/kernel/sys_i386.c | 1
arch/i386/kernel/sysenter.c | 1
arch/ia64/kernel/init_task.c | 1
arch/m68k/kernel/process.c | 1
arch/m68k/kernel/sys_m68k.c | 1
arch/mips/kernel/smp.c | 1
arch/mips/kernel/syscall.c | 1
arch/parisc/hpux/fs.c | 1
arch/parisc/kernel/init_task.c | 1
arch/parisc/kernel/process.c | 1
arch/parisc/kernel/smp.c | 1
arch/powerpc/kernel/syscalls.c | 1
arch/powerpc/lib/rheap.c | 1
arch/powerpc/oprofile/cell/spu_task_sync.c | 1
arch/s390/kernel/init_task.c | 1
arch/s390/kernel/process.c | 1
arch/s390/kernel/smp.c | 1
arch/s390/kernel/sys_s390.c | 1
arch/sparc/kernel/init_task.c | 1
arch/sparc64/kernel/init_task.c | 1
arch/sparc64/kernel/process.c | 1
arch/um/drivers/mmapper_kern.c | 1
arch/um/kernel/exec.c | 1
arch/um/kernel/init_task.c | 1
arch/um/kernel/syscall.c | 1
arch/x86_64/ia32/ptrace32.c | 1
arch/x86_64/kernel/process.c | 1
arch/x86_64/kernel/sys_x86_64.c | 1
arch/x86_64/vdso/vma.c | 1
drivers/char/agp/compat_ioctl.c | 1
drivers/char/agp/frontend.c | 1
drivers/char/mmtimer.c | 1
drivers/char/mspec.c | 1
drivers/infiniband/hw/ipath/ipath_diag.c | 1
fs/dcookies.c | 1
include/linux/hugetlb.h | 2 +
include/linux/mm.h | 36 ++---------------------------
mm/mmap.c | 34 +++++++++++++++++++++++++++
mm/oom_kill.c | 1
mm/vmstat.c | 1
45 files changed, 81 insertions(+), 33 deletions(-)

--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/threads.h>
#include <linux/smp.h>
#include <linux/interrupt.h>
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -23,6 +23,7 @@
#include <linux/cpu.h>
#include <linux/interrupt.h>
#include <linux/smp.h>
+#include <linux/fs.h>

#include <asm/cpu.h>
#include <asm/elf.h>
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -17,6 +17,7 @@
#include <linux/profile.h>
#include <linux/errno.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/cpu.h>
#include <linux/smp.h>
#include <linux/seq_file.h>
--- a/arch/frv/kernel/sys_frv.c
+++ b/arch/frv/kernel/sys_frv.c
@@ -13,6 +13,7 @@
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
--- a/arch/i386/kernel/microcode.c
+++ b/arch/i386/kernel/microcode.c
@@ -82,6 +82,7 @@
#include <linux/miscdevice.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/cpu.h>
#include <linux/firmware.h>
--- a/arch/i386/kernel/sys_i386.c
+++ b/arch/i386/kernel/sys_i386.c
@@ -9,6 +9,7 @@
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
--- a/arch/i386/kernel/sysenter.c
+++ b/arch/i386/kernel/sysenter.c
@@ -16,6 +16,7 @@
#include <linux/string.h>
#include <linux/elf.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/module.h>

#include <asm/cpufeature.h>
--- a/arch/ia64/kernel/init_task.c
+++ b/arch/ia64/kernel/init_task.c
@@ -8,6 +8,7 @@

#include <linux/init.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/init_task.h>
--- a/arch/m68k/kernel/process.c
+++ b/arch/m68k/kernel/process.c
@@ -15,6 +15,7 @@
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/stddef.h>
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -10,6 +10,7 @@
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/sem.h>
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -30,6 +30,7 @@
#include <linux/sched.h>
#include <linux/cpumask.h>
#include <linux/cpu.h>
+#include <linux/err.h>

#include <asm/atomic.h>
#include <asm/cpu.h>
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -12,6 +12,7 @@
#include <linux/errno.h>
#include <linux/linkage.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/mman.h>
#include <linux/ptrace.h>
--- a/arch/parisc/hpux/fs.c
+++ b/arch/parisc/hpux/fs.c
@@ -23,6 +23,7 @@

#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/file.h>
#include <linux/slab.h>
--- a/arch/parisc/kernel/init_task.c
+++ b/arch/parisc/kernel/init_task.c
@@ -23,6 +23,7 @@
*/

#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/init.h>
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -38,6 +38,7 @@
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/module.h>
#include <linux/personality.h>
#include <linux/ptrace.h>
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -28,6 +28,7 @@
#include <linux/smp.h>
#include <linux/kernel_stat.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/delay.h>
#include <linux/bitops.h>

--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -23,6 +23,7 @@
#include <linux/sched.h>
#include <linux/syscalls.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
--- a/arch/powerpc/lib/rheap.c
+++ b/arch/powerpc/lib/rheap.c
@@ -16,6 +16,7 @@
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/slab.h>

#include <asm/rheap.h>
--- a/arch/powerpc/oprofile/cell/spu_task_sync.c
+++ b/arch/powerpc/oprofile/cell/spu_task_sync.c
@@ -21,6 +21,7 @@
#include <linux/dcookies.h>
#include <linux/kref.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/numa.h>
--- a/arch/s390/kernel/init_task.c
+++ b/arch/s390/kernel/init_task.c
@@ -7,6 +7,7 @@
*/

#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/init_task.h>
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -21,6 +21,7 @@
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -23,6 +23,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/spinlock.h>
#include <linux/kernel_stat.h>
#include <linux/delay.h>
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -16,6 +16,7 @@
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
--- a/arch/sparc/kernel/init_task.c
+++ b/arch/sparc/kernel/init_task.c
@@ -1,4 +1,5 @@
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/init_task.h>
--- a/arch/sparc64/kernel/init_task.c
+++ b/arch/sparc64/kernel/init_task.c
@@ -1,4 +1,5 @@
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/init_task.h>
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -18,6 +18,7 @@
#include <linux/kernel.h>
#include <linux/kallsyms.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/stddef.h>
#include <linux/ptrace.h>
--- a/arch/um/drivers/mmapper_kern.c
+++ b/arch/um/drivers/mmapper_kern.c
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <asm/uaccess.h>
#include "mem_user.h"
--- a/arch/um/kernel/exec.c
+++ b/arch/um/kernel/exec.c
@@ -6,6 +6,7 @@
#include "linux/slab.h"
#include "linux/smp_lock.h"
#include "linux/ptrace.h"
+#include "linux/fs.h"
#include "asm/ptrace.h"
#include "asm/pgtable.h"
#include "asm/tlbflush.h"
--- a/arch/um/kernel/init_task.c
+++ b/arch/um/kernel/init_task.c
@@ -4,6 +4,7 @@
*/

#include "linux/mm.h"
+#include "linux/fs.h"
#include "linux/module.h"
#include "linux/sched.h"
#include "linux/init_task.h"
--- a/arch/um/kernel/syscall.c
+++ b/arch/um/kernel/syscall.c
@@ -7,6 +7,7 @@
#include "linux/file.h"
#include "linux/smp_lock.h"
#include "linux/mm.h"
+#include "linux/fs.h"
#include "linux/utsname.h"
#include "linux/msg.h"
#include "linux/shm.h"
--- a/arch/x86_64/ia32/ptrace32.c
+++ b/arch/x86_64/ia32/ptrace32.c
@@ -15,6 +15,7 @@
#include <linux/syscalls.h>
#include <linux/unistd.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/ptrace.h>
#include <asm/ptrace.h>
#include <asm/compat.h>
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -23,6 +23,7 @@
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/elfcore.h>
#include <linux/smp.h>
#include <linux/slab.h>
--- a/arch/x86_64/kernel/sys_x86_64.c
+++ b/arch/x86_64/kernel/sys_x86_64.c
@@ -6,6 +6,7 @@
#include <linux/sched.h>
#include <linux/syscalls.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
--- a/arch/x86_64/vdso/vma.c
+++ b/arch/x86_64/vdso/vma.c
@@ -4,6 +4,7 @@
* Subject to the GPL, v.2
*/
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/random.h>
--- a/drivers/char/agp/compat_ioctl.c
+++ b/drivers/char/agp/compat_ioctl.c
@@ -28,6 +28,7 @@

#include <linux/kernel.h>
#include <linux/pci.h>
+#include <linux/fs.h>
#include <linux/agpgart.h>
#include <asm/uaccess.h>
#include "agp.h"
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -37,6 +37,7 @@
#include <linux/agpgart.h>
#include <linux/slab.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/sched.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
--- a/drivers/char/mmtimer.c
+++ b/drivers/char/mmtimer.c
@@ -25,6 +25,7 @@
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/mmtimer.h>
#include <linux/miscdevice.h>
#include <linux/posix-timers.h>
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -38,6 +38,7 @@
#include <linux/miscdevice.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/vmalloc.h>
#include <linux/string.h>
#include <linux/slab.h>
--- a/drivers/infiniband/hw/ipath/ipath_diag.c
+++ b/drivers/infiniband/hw/ipath/ipath_diag.c
@@ -44,6 +44,7 @@
#include <linux/io.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>
+#include <linux/fs.h>
#include <asm/uaccess.h>

#include "ipath_kernel.h"
--- a/fs/dcookies.c
+++ b/fs/dcookies.c
@@ -20,6 +20,7 @@
#include <linux/capability.h>
#include <linux/dcache.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/dcookies.h>
#include <linux/mutex.h>
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -1,6 +1,8 @@
#ifndef _LINUX_HUGETLB_H
#define _LINUX_HUGETLB_H

+#include <linux/fs.h>
+
#ifdef CONFIG_HUGETLB_PAGE

#include <linux/mempolicy.h>
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -10,7 +10,6 @@
#include <linux/mmzone.h>
#include <linux/rbtree.h>
#include <linux/prio_tree.h>
-#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/debug_locks.h>
#include <linux/backing-dev.h>
@@ -18,7 +17,9 @@

struct mempolicy;
struct anon_vma;
+struct file_ra_state;
struct user_struct;
+struct writeback_control;

#ifndef CONFIG_DISCONTIGMEM /* Don't use mapnrs, do it properly */
extern unsigned long max_mapnr;
@@ -861,38 +862,7 @@ struct shrinker {
extern void register_shrinker(struct shrinker *);
extern void unregister_shrinker(struct shrinker *);

-/*
- * Some shared mappigns will want the pages marked read-only
- * to track write events. If so, we'll downgrade vm_page_prot
- * to the private version (using protection_map[] without the
- * VM_SHARED bit).
- */
-static inline int vma_wants_writenotify(struct vm_area_struct *vma)
-{
- unsigned int vm_flags = vma->vm_flags;
-
- /* If it was private or non-writable, the write bit is already clear */
- if ((vm_flags & (VM_WRITE|VM_SHARED)) != ((VM_WRITE|VM_SHARED)))
- return 0;
-
- /* The backer wishes to know when pages are first written to? */
- if (vma->vm_ops && vma->vm_ops->page_mkwrite)
- return 1;
-
- /* The open routine did something to the protections already? */
- if (pgprot_val(vma->vm_page_prot) !=
- pgprot_val(protection_map[vm_flags &
- (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]))
- return 0;
-
- /* Specialty mapping? */
- if (vm_flags & (VM_PFNMAP|VM_INSERTPAGE))
- return 0;
-
- /* Can the mapping track the dirty pages? */
- return vma->vm_file && vma->vm_file->f_mapping &&
- mapping_cap_account_dirty(vma->vm_file->f_mapping);
-}
+int vma_wants_writenotify(struct vm_area_struct *vma);

extern pte_t *FASTCALL(get_locked_pte(struct mm_struct *mm, unsigned long addr, spinlock_t **ptl));

--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1029,6 +1029,40 @@ unsigned long do_mmap_pgoff(struct file * file, unsigned long addr,
}
EXPORT_SYMBOL(do_mmap_pgoff);

+/*
+ * Some shared mappigns will want the pages marked read-only
+ * to track write events. If so, we'll downgrade vm_page_prot
+ * to the private version (using protection_map[] without the
+ * VM_SHARED bit).
+ */
+int vma_wants_writenotify(struct vm_area_struct *vma)
+{
+ unsigned int vm_flags = vma->vm_flags;
+
+ /* If it was private or non-writable, the write bit is already clear */
+ if ((vm_flags & (VM_WRITE|VM_SHARED)) != ((VM_WRITE|VM_SHARED)))
+ return 0;
+
+ /* The backer wishes to know when pages are first written to? */
+ if (vma->vm_ops && vma->vm_ops->page_mkwrite)
+ return 1;
+
+ /* The open routine did something to the protections already? */
+ if (pgprot_val(vma->vm_page_prot) !=
+ pgprot_val(protection_map[vm_flags &
+ (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]))
+ return 0;
+
+ /* Specialty mapping? */
+ if (vm_flags & (VM_PFNMAP|VM_INSERTPAGE))
+ return 0;
+
+ /* Can the mapping track the dirty pages? */
+ return vma->vm_file && vma->vm_file->f_mapping &&
+ mapping_cap_account_dirty(vma->vm_file->f_mapping);
+}
+
+
unsigned long mmap_region(struct file *file, unsigned long addr,
unsigned long len, unsigned long flags,
unsigned int vm_flags, unsigned long pgoff,
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -17,6 +17,7 @@

#include <linux/oom.h>
#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/sched.h>
#include <linux/swap.h>
#include <linux/timex.h>
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -10,6 +10,7 @@
*/

#include <linux/mm.h>
+#include <linux/err.h>
#include <linux/module.h>
#include <linux/cpu.h>
#include <linux/sched.h>
-
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