Remove fs.h from mm.h
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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 0804b6a..ad17644 100644
--- 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>
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 5be2e98..4de432e 100644
--- 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>
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 9746e52..eafbb2b 100644
--- 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>
diff --git a/arch/frv/kernel/sys_frv.c b/arch/frv/kernel/sys_frv.c
index 26b3df3..6fbe266 100644
--- 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>
diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
index d865d04..09cf781 100644
--- 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>
diff --git a/arch/i386/kernel/sys_i386.c b/arch/i386/kernel/sys_i386.c
index e5dcb93..4214730 100644
--- 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>
diff --git a/arch/i386/kernel/sysenter.c b/arch/i386/kernel/sysenter.c
index 6deb159..4eb2e40 100644
--- 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>
diff --git a/arch/ia64/kernel/init_task.c b/arch/ia64/kernel/init_task.c
index b69c397..bc8efca 100644
--- 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>
diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c
index 99fc122..3ee9186 100644
--- 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>
diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index 90238a8..36d78cf 100644
--- 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>
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index be7362b..04bbbd8 100644
--- 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>
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index b53f7ed..541b500 100644
--- 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>
diff --git a/arch/parisc/hpux/fs.c b/arch/parisc/hpux/fs.c
index f2042e6..1263f00 100644
--- 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>
diff --git a/arch/parisc/kernel/init_task.c b/arch/parisc/kernel/init_task.c
index 8384bf9..446f98d 100644
--- 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>
diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index 3556648..b80e02a 100644
--- 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>
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 04c7e1d..d7bc7bb 100644
--- 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>
diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index fc6647d..f85f402 100644
--- 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>
diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c
index 2f24ea0..ada5b42 100644
--- 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>
diff --git a/arch/powerpc/oprofile/cell/spu_task_sync.c b/arch/powerpc/oprofile/cell/spu_task_sync.c
index 1336657..4a890cb 100644
--- 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>
diff --git a/arch/s390/kernel/init_task.c b/arch/s390/kernel/init_task.c
index d73a740..d494161 100644
--- 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>
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 441975b..abb447a 100644
--- 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>
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 03674fb..35edbef 100644
--- 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>
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index 13e27bd..1eaff84 100644
--- 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>
diff --git a/arch/sparc/kernel/init_task.c b/arch/sparc/kernel/init_task.c
index fc31de6..d9d4f96 100644
--- 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>
diff --git a/arch/sparc64/kernel/init_task.c b/arch/sparc64/kernel/init_task.c
index 329b38f..90007cf 100644
--- 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>
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index fd7899b..ca7cdfd 100644
--- 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>
diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c
index e41a08f0..867666a 100644
--- 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"
diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
index 356e50f..ce6828f 100644
--- 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"
diff --git a/arch/um/kernel/init_task.c b/arch/um/kernel/init_task.c
index d4f1d1a..cba516e 100644
--- 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"
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
index 237c4ea..7b3b673 100644
--- 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"
diff --git a/arch/x86_64/ia32/ptrace32.c b/arch/x86_64/ia32/ptrace32.c
index 4de3a543..4a233ad 100644
--- 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>
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index e7ac629..2842f50 100644
--- 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>
diff --git a/arch/x86_64/kernel/sys_x86_64.c b/arch/x86_64/kernel/sys_x86_64.c
index d067d9a..4770b7a 100644
--- 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>
diff --git a/arch/x86_64/vdso/vma.c b/arch/x86_64/vdso/vma.c
index d4cb83a..ff9333e 100644
--- 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>