Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild...
authorLinus Torvalds <torvalds@linux-foundation.org>
Sat, 2 May 2009 23:33:56 +0000 (16:33 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 2 May 2009 23:33:56 +0000 (16:33 -0700)
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  kbuild, modpost: Check the section flags, to catch missing "ax"/"aw"
  kbuild: fix comment in modpost.c
  kbuild: fix scripts/setlocalversion with git
  kbuild: fix Module.markers permission error under cygwin
  docs: also clean index.html
  kbuild: remove a tag file before it is regenerated
  kbuild: "make prepare" should be "make modules_prepare"
  kbuild: clean Module.markers and modules.order for out-of-tree modules
  avr32: drop unused CLEAN_FILES

57 files changed:
Documentation/filesystems/Locking
Documentation/kernel-doc-nano-HOWTO.txt
Documentation/sysctl/vm.txt
MAINTAINERS
arch/alpha/include/asm/barrier.h
arch/alpha/include/asm/futex.h
arch/alpha/include/asm/uaccess.h
arch/alpha/kernel/Makefile
arch/alpha/kernel/binfmt_loader.c
arch/alpha/kernel/err_ev6.c
arch/alpha/kernel/err_ev7.c
arch/alpha/kernel/err_impl.h
arch/alpha/kernel/err_marvel.c
arch/alpha/kernel/err_titan.c
arch/alpha/kernel/proto.h
arch/alpha/mm/extable.c
arch/m32r/boot/compressed/Makefile
arch/m32r/include/asm/assembler.h
arch/m32r/kernel/Makefile
arch/microblaze/include/asm/of_platform.h
arch/powerpc/include/asm/of_platform.h
drivers/acpi/acpica/rscalc.c
drivers/firmware/iscsi_ibft.c
drivers/hid/hid-apple.c
drivers/hid/hid-core.c
drivers/hid/hid-ids.h
drivers/hid/hid-lg.c
drivers/hid/hidraw.c
drivers/hid/usbhid/hid-core.c
drivers/serial/crisv10.c
drivers/video/console/vgacon.c
fs/autofs4/expire.c
fs/binfmt_elf_fdpic.c
fs/buffer.c
fs/exec.c
fs/ocfs2/dcache.c
fs/ocfs2/dir.c
fs/ocfs2/export.c
fs/ocfs2/journal.h
fs/ocfs2/namei.c
fs/ocfs2/suballoc.c
fs/proc/meminfo.c
fs/proc/task_mmu.c
include/asm-generic/atomic.h
include/linux/binfmts.h
include/linux/memcontrol.h
include/linux/mman.h
include/linux/of_platform.h
kernel/sysctl.c
mm/memcontrol.c
mm/memory.c
mm/mmap.c
mm/nommu.c
mm/shmem.c
mm/swap.c
mm/vmscan.c
scripts/kernel-doc

index 76efe5b71d7d8f744739a129f4b5333b898acf5c..3120f8dd2c316c66347051a95d3edce1ad090d44 100644 (file)
@@ -512,16 +512,24 @@ locking rules:
                BKL     mmap_sem        PageLocked(page)
 open:          no      yes
 close:         no      yes
-fault:         no      yes
-page_mkwrite:  no      yes             no
+fault:         no      yes             can return with page locked
+page_mkwrite:  no      yes             can return with page locked
 access:                no      yes
 
-       ->page_mkwrite() is called when a previously read-only page is
-about to become writeable. The file system is responsible for
-protecting against truncate races. Once appropriate action has been
-taking to lock out truncate, the page range should be verified to be
-within i_size. The page mapping should also be checked that it is not
-NULL.
+       ->fault() is called when a previously not present pte is about
+to be faulted in. The filesystem must find and return the page associated
+with the passed in "pgoff" in the vm_fault structure. If it is possible that
+the page may be truncated and/or invalidated, then the filesystem must lock
+the page, then ensure it is not already truncated (the page lock will block
+subsequent truncate), and then return with VM_FAULT_LOCKED, and the page
+locked. The VM will unlock the page.
+
+       ->page_mkwrite() is called when a previously read-only pte is
+about to become writeable. The filesystem again must ensure that there are
+no truncate/invalidate races, and then return with the page locked. If
+the page has been truncated, the filesystem should not look up a new page
+like the ->fault() handler, but simply return with VM_FAULT_NOPAGE, which
+will cause the VM to retry the fault.
 
        ->access() is called when get_user_pages() fails in
 acces_process_vm(), typically used to debug a process through
index 026ec7d573840f8be024d5945addfcda73373118..4d04572b6549edef13d29a514124371b72863d10 100644 (file)
@@ -269,7 +269,10 @@ Use the argument mechanism to document members or constants.
 
 Inside a struct description, you can use the "private:" and "public:"
 comment tags.  Structure fields that are inside a "private:" area
-are not listed in the generated output documentation.
+are not listed in the generated output documentation.  The "private:"
+and "public:" tags must begin immediately following a "/*" comment
+marker.  They may optionally include comments between the ":" and the
+ending "*/" marker.
 
 Example:
 
@@ -283,7 +286,7 @@ Example:
 struct my_struct {
     int a;
     int b;
-/* private: */
+/* private: internal use only */
     int c;
 };
 
index 97c4b3284329bebc051ba43840571784652306f4..b716d33912d8a02b219b6c39e0270c01b7b733a4 100644 (file)
@@ -90,6 +90,10 @@ will itself start writeback.
 If dirty_bytes is written, dirty_ratio becomes a function of its value
 (dirty_bytes / the amount of dirtyable system memory).
 
+Note: the minimum value allowed for dirty_bytes is two pages (in bytes); any
+value lower than this limit will be ignored and the old configuration will be
+retained.
+
 ==============================================================
 
 dirty_expire_centisecs
index c547f4a2bb629cd2e584b26743e1714dab92b8b3..9de961bd1214a14bafc1a05ac488bcca9d346dc8 100644 (file)
@@ -4189,7 +4189,7 @@ P:        Joel Becker
 M:     joel.becker@oracle.com
 L:     ocfs2-devel@oss.oracle.com (moderated for non-subscribers)
 W:     http://oss.oracle.com/projects/ocfs2/
-T:     git git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2.git
+T:     git git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2.git
 S:     Supported
 F:     Documentation/filesystems/ocfs2.txt
 F:     Documentation/filesystems/dlmfs.txt
@@ -4521,6 +4521,19 @@ M:       jim@jtan.com
 L:     cbe-oss-dev@ozlabs.org
 S:     Maintained
 
+PTRACE SUPPORT
+P:     Roland McGrath
+M:     roland@redhat.com
+P:     Oleg Nesterov
+M:     oleg@redhat.com
+L:     linux-kernel@vger.kernel.org
+S:     Maintained
+F:     include/asm-generic/syscall.h
+F:     include/linux/ptrace.h
+F:     include/linux/regset.h
+F:     include/linux/tracehook.h
+F:     kernel/ptrace.c
+
 PVRUSB2 VIDEO4LINUX DRIVER
 P:     Mike Isely
 M:     isely@pobox.com
@@ -4666,13 +4679,13 @@ F:      kernel/rcutorture.c
 
 RDC R-321X SoC
 P:     Florian Fainelli
-M:     florian.fainelli@telecomint.eu
+M:     florian@openwrt.org
 L:     linux-kernel@vger.kernel.org
 S:     Maintained
 
 RDC R6040 FAST ETHERNET DRIVER
 P:     Florian Fainelli
-M:     florian.fainelli@telecomint.eu
+M:     florian@openwrt.org
 L:     netdev@vger.kernel.org
 S:     Maintained
 F:     drivers/net/r6040.c
index ac78eba909bce225243a9ddb979c3b5321d3da17..ce8860a0b32db64bf0b8f8663717fd30df635b05 100644 (file)
@@ -16,11 +16,13 @@ __asm__ __volatile__("wmb": : :"memory")
 __asm__ __volatile__("mb": : :"memory")
 
 #ifdef CONFIG_SMP
+#define __ASM_SMP_MB   "\tmb\n"
 #define smp_mb()       mb()
 #define smp_rmb()      rmb()
 #define smp_wmb()      wmb()
 #define smp_read_barrier_depends()     read_barrier_depends()
 #else
+#define __ASM_SMP_MB
 #define smp_mb()       barrier()
 #define smp_rmb()      barrier()
 #define smp_wmb()      barrier()
index 6a332a9f099c2eafbf78ee5f79056a349d41a775..945de222ab91a3409836ce070a4bcd9f525061cb 100644 (file)
@@ -1,6 +1,116 @@
-#ifndef _ASM_FUTEX_H
-#define _ASM_FUTEX_H
+#ifndef _ASM_ALPHA_FUTEX_H
+#define _ASM_ALPHA_FUTEX_H
 
-#include <asm-generic/futex.h>
+#ifdef __KERNEL__
 
-#endif
+#include <linux/futex.h>
+#include <linux/uaccess.h>
+#include <asm/errno.h>
+#include <asm/barrier.h>
+
+#define __futex_atomic_op(insn, ret, oldval, uaddr, oparg)     \
+       __asm__ __volatile__(                                   \
+               __ASM_SMP_MB                                    \
+       "1:     ldl_l   %0,0(%2)\n"                             \
+               insn                                            \
+       "2:     stl_c   %1,0(%2)\n"                             \
+       "       beq     %1,4f\n"                                \
+       "       mov     $31,%1\n"                               \
+       "3:     .subsection 2\n"                                \
+       "4:     br      1b\n"                                   \
+       "       .previous\n"                                    \
+       "       .section __ex_table,\"a\"\n"                    \
+       "       .long   1b-.\n"                                 \
+       "       lda     $31,3b-1b(%1)\n"                        \
+       "       .long   2b-.\n"                                 \
+       "       lda     $31,3b-2b(%1)\n"                        \
+       "       .previous\n"                                    \
+       :       "=&r" (oldval), "=&r"(ret)                      \
+       :       "r" (uaddr), "r"(oparg)                         \
+       :       "memory")
+
+static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
+{
+       int op = (encoded_op >> 28) & 7;
+       int cmp = (encoded_op >> 24) & 15;
+       int oparg = (encoded_op << 8) >> 20;
+       int cmparg = (encoded_op << 20) >> 20;
+       int oldval = 0, ret;
+       if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
+               oparg = 1 << oparg;
+
+       if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+               return -EFAULT;
+
+       pagefault_disable();
+
+       switch (op) {
+       case FUTEX_OP_SET:
+               __futex_atomic_op("mov %3,%1\n", ret, oldval, uaddr, oparg);
+               break;
+       case FUTEX_OP_ADD:
+               __futex_atomic_op("addl %0,%3,%1\n", ret, oldval, uaddr, oparg);
+               break;
+       case FUTEX_OP_OR:
+               __futex_atomic_op("or %0,%3,%1\n", ret, oldval, uaddr, oparg);
+               break;
+       case FUTEX_OP_ANDN:
+               __futex_atomic_op("andnot %0,%3,%1\n", ret, oldval, uaddr, oparg);
+               break;
+       case FUTEX_OP_XOR:
+               __futex_atomic_op("xor %0,%3,%1\n", ret, oldval, uaddr, oparg);
+               break;
+       default:
+               ret = -ENOSYS;
+       }
+
+       pagefault_enable();
+
+       if (!ret) {
+               switch (cmp) {
+               case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break;
+               case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break;
+               case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break;
+               case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break;
+               case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break;
+               case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break;
+               default: ret = -ENOSYS;
+               }
+       }
+       return ret;
+}
+
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+       int prev, cmp;
+
+       if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+               return -EFAULT;
+
+       __asm__ __volatile__ (
+               __ASM_SMP_MB
+       "1:     ldl_l   %0,0(%2)\n"
+       "       cmpeq   %0,%3,%1\n"
+       "       beq     %1,3f\n"
+       "       mov     %4,%1\n"
+       "2:     stl_c   %1,0(%2)\n"
+       "       beq     %1,4f\n"
+       "3:     .subsection 2\n"
+       "4:     br      1b\n"
+       "       .previous\n"
+       "       .section __ex_table,\"a\"\n"
+       "       .long   1b-.\n"
+       "       lda     $31,3b-1b(%0)\n"
+       "       .long   2b-.\n"
+       "       lda     $31,3b-2b(%0)\n"
+       "       .previous\n"
+       :       "=&r"(prev), "=&r"(cmp)
+       :       "r"(uaddr), "r"((long)oldval), "r"(newval)
+       :       "memory");
+
+       return prev;
+}
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_ALPHA_FUTEX_H */
index 163f3053001c82e4976c082d1798ab656615088a..b49ec2f8d6e3e0220e4009793387c917f1b8e090 100644 (file)
@@ -507,5 +507,7 @@ struct exception_table_entry
        (pc) + (_fixup)->fixup.bits.nextinsn;                   \
 })
 
+#define ARCH_HAS_SORT_EXTABLE
+#define ARCH_HAS_SEARCH_EXTABLE
 
 #endif /* __ALPHA_UACCESS_H */
index a427538252f878aa664520e5c3f6f6d7ee844513..7739a62440a7a7027e241385171827189f783dd8 100644 (file)
@@ -8,7 +8,7 @@ EXTRA_CFLAGS    := -Werror -Wno-sign-compare
 
 obj-y    := entry.o traps.o process.o init_task.o osf_sys.o irq.o \
            irq_alpha.o signal.o setup.o ptrace.o time.o \
-           alpha_ksyms.o systbls.o err_common.o io.o binfmt_loader.o
+           alpha_ksyms.o systbls.o err_common.o io.o
 
 obj-$(CONFIG_VGA_HOSE) += console.o
 obj-$(CONFIG_SMP)      += smp.o
@@ -43,6 +43,10 @@ else
 # Misc support
 obj-$(CONFIG_ALPHA_SRM)                += srmcons.o
 
+ifdef CONFIG_BINFMT_AOUT
+obj-y  += binfmt_loader.o
+endif
+
 # Core logic support
 obj-$(CONFIG_ALPHA_APECS)      += core_apecs.o
 obj-$(CONFIG_ALPHA_CIA)                += core_cia.o
index 4a0af906b00aff98efa3db10d0e2797f3899bf28..3fcfad4101300ea1a94992022f4b5084d119d0f9 100644 (file)
@@ -46,6 +46,6 @@ static struct linux_binfmt loader_format = {
 
 static int __init init_loader_binfmt(void)
 {
-       return register_binfmt(&loader_format);
+       return insert_binfmt(&loader_format);
 }
 arch_initcall(init_loader_binfmt);
index 985e5c1681ace50d0ef11c1bfdf29c485bcfbdda..8ca6345bf13167842d3c0fb60637e51e18e3db93 100644 (file)
@@ -229,7 +229,7 @@ ev6_process_logout_frame(struct el_common *mchk_header, int print)
 }
 
 void
-ev6_machine_check(u64 vector, u64 la_ptr)
+ev6_machine_check(unsigned long vector, unsigned long la_ptr)
 {
        struct el_common *mchk_header = (struct el_common *)la_ptr;
 
index 73770c6ca01321457d0430133525d4668dcc97e0..d738a67112d4da890dc3bd39abd0cd471bdb76a9 100644 (file)
@@ -117,7 +117,7 @@ ev7_collect_logout_frame_subpackets(struct el_subpacket *el_ptr,
 }
 
 void
-ev7_machine_check(u64 vector, u64 la_ptr)
+ev7_machine_check(unsigned long vector, unsigned long la_ptr)
 {
        struct el_subpacket *el_ptr = (struct el_subpacket *)la_ptr;
        char *saved_err_prefix = err_print_prefix;
@@ -246,7 +246,7 @@ ev7_process_pal_subpacket(struct el_subpacket *header)
 
        switch(header->type) {
        case EL_TYPE__PAL__LOGOUT_FRAME:
-               printk("%s*** MCHK occurred on LPID %ld (RBOX %llx)\n",
+               printk("%s*** MCHK occurred on LPID %lld (RBOX %llx)\n",
                       err_print_prefix,
                       packet->by_type.logout.whami, 
                       packet->by_type.logout.rbox_whami);
index 3c12258158e67f0f8b4afdd8ecdb5d1139c59e30..0c010ca4611ea85ab244857d68199638ef768766 100644 (file)
@@ -60,26 +60,26 @@ extern struct ev7_lf_subpackets *
 ev7_collect_logout_frame_subpackets(struct el_subpacket *,
                                    struct ev7_lf_subpackets *);
 extern void ev7_register_error_handlers(void);
-extern void ev7_machine_check(u64, u64);
+extern void ev7_machine_check(unsigned long, unsigned long);
 
 /*
  * err_ev6.c
  */
 extern void ev6_register_error_handlers(void);
 extern int ev6_process_logout_frame(struct el_common *, int);
-extern void ev6_machine_check(u64, u64);
+extern void ev6_machine_check(unsigned long, unsigned long);
 
 /*
  * err_marvel.c
  */
-extern void marvel_machine_check(u64, u64);
+extern void marvel_machine_check(unsigned long, unsigned long);
 extern void marvel_register_error_handlers(void);
 
 /*
  * err_titan.c
  */
 extern int titan_process_logout_frame(struct el_common *, int);
-extern void titan_machine_check(u64, u64);
+extern void titan_machine_check(unsigned long, unsigned long);
 extern void titan_register_error_handlers(void);
 extern int privateer_process_logout_frame(struct el_common *, int);
-extern void privateer_machine_check(u64, u64);
+extern void privateer_machine_check(unsigned long, unsigned long);
index 6bfd243efba342200a36a51b4be1033921c0b3c0..52a79dfc13c6774ec1f88f2e288af1a42f774f51 100644 (file)
@@ -1042,7 +1042,7 @@ marvel_process_logout_frame(struct ev7_lf_subpackets *lf_subpackets, int print)
 }
 
 void
-marvel_machine_check(u64 vector, u64 la_ptr)
+marvel_machine_check(unsigned long vector, unsigned long la_ptr)
 {
        struct el_subpacket *el_ptr = (struct el_subpacket *)la_ptr;
        int (*process_frame)(struct ev7_lf_subpackets *, int) = NULL;
index c7e28a88d6e31b2869ab45488d7e5f9092127ffb..f7ed97ce0dfd72458dde026292b89702be518477 100644 (file)
@@ -380,7 +380,7 @@ titan_process_logout_frame(struct el_common *mchk_header, int print)
 }
 
 void
-titan_machine_check(u64 vector, u64 la_ptr)
+titan_machine_check(unsigned long vector, unsigned long la_ptr)
 {
        struct el_common *mchk_header = (struct el_common *)la_ptr;
        struct el_TITAN_sysdata_mcheck *tmchk =
@@ -702,7 +702,7 @@ privateer_process_logout_frame(struct el_common *mchk_header, int print)
 }
 
 void
-privateer_machine_check(u64 vector, u64 la_ptr)
+privateer_machine_check(unsigned long vector, unsigned long la_ptr)
 {
        struct el_common *mchk_header = (struct el_common *)la_ptr;
        struct el_TITAN_sysdata_mcheck *tmchk =
index 567f2598d090a331f89a1444ab42b82763ab1297..3d2627ec986006e956f161b2bedcfa1c2ec32272 100644 (file)
@@ -36,7 +36,6 @@ extern void cia_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 extern struct pci_ops irongate_pci_ops;
 extern int irongate_pci_clr_err(void);
 extern void irongate_init_arch(void);
-extern void irongate_machine_check(u64, u64);
 #define irongate_pci_tbi ((void *)0)
 
 /* core_lca.c */
@@ -49,7 +48,7 @@ extern void lca_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 extern struct pci_ops marvel_pci_ops;
 extern void marvel_init_arch(void);
 extern void marvel_kill_arch(int);
-extern void marvel_machine_check(u64, u64);
+extern void marvel_machine_check(unsigned long, unsigned long);
 extern void marvel_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 extern int marvel_pa_to_nid(unsigned long);
 extern int marvel_cpuid_to_nid(int);
@@ -86,7 +85,7 @@ extern void t2_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 extern struct pci_ops titan_pci_ops;
 extern void titan_init_arch(void);
 extern void titan_kill_arch(int);
-extern void titan_machine_check(u64, u64);
+extern void titan_machine_check(unsigned long, unsigned long);
 extern void titan_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 extern struct _alpha_agp_info *titan_agp_info(void);
 
index dc7aeda157734737f71d8a0b7dd3a7bfc7fbbcab..62dc379d301af9f1f00e824a2088eb487f77f39f 100644 (file)
@@ -3,11 +3,49 @@
  */
 
 #include <linux/module.h>
+#include <linux/sort.h>
 #include <asm/uaccess.h>
 
+static inline unsigned long ex_to_addr(const struct exception_table_entry *x)
+{
+       return (unsigned long)&x->insn + x->insn;
+}
+
+static void swap_ex(void *a, void *b, int size)
+{
+       struct exception_table_entry *ex_a = a, *ex_b = b;
+       unsigned long addr_a = ex_to_addr(ex_a), addr_b = ex_to_addr(ex_b);
+       unsigned int t = ex_a->fixup.unit;
+
+       ex_a->fixup.unit = ex_b->fixup.unit;
+       ex_b->fixup.unit = t;
+       ex_a->insn = (int)(addr_b - (unsigned long)&ex_a->insn);
+       ex_b->insn = (int)(addr_a - (unsigned long)&ex_b->insn);
+}
+
+/*
+ * The exception table needs to be sorted so that the binary
+ * search that we use to find entries in it works properly.
+ * This is used both for the kernel exception table and for
+ * the exception tables of modules that get loaded.
+ */
+static int cmp_ex(const void *a, const void *b)
+{
+       const struct exception_table_entry *x = a, *y = b;
+
+       /* avoid overflow */
+       if (ex_to_addr(x) > ex_to_addr(y))
+               return 1;
+       if (ex_to_addr(x) < ex_to_addr(y))
+               return -1;
+       return 0;
+}
+
 void sort_extable(struct exception_table_entry *start,
                  struct exception_table_entry *finish)
 {
+       sort(start, finish - start, sizeof(struct exception_table_entry),
+            cmp_ex, swap_ex);
 }
 
 const struct exception_table_entry *
@@ -20,7 +58,7 @@ search_extable(const struct exception_table_entry *first,
                unsigned long mid_value;
 
                mid = (last - first) / 2 + first;
-               mid_value = (unsigned long)&mid->insn + mid->insn;
+               mid_value = ex_to_addr(mid);
                 if (mid_value == value)
                         return mid;
                 else if (mid_value < value)
index d908e1d3c07f11f79759e92020ce779a1360e507..560484ae35ec6add544d0cb4cf1c514853ec4a57 100644 (file)
@@ -6,7 +6,6 @@
 
 targets                := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o \
                   piggy.o vmlinux.lds
-EXTRA_AFLAGS   := -traditional
 
 OBJECTS = $(obj)/head.o $(obj)/misc.o
 
index 26351539b5ff92626f560e97d64eabb3fdb85635..728799fc70aad7d967c8c9ad7b4a95eca6cbf4aa 100644 (file)
@@ -9,14 +9,15 @@
  * This file contains M32R architecture specific macro definitions.
  */
 
+#include <linux/stringify.h>
+
+#undef __STR
 
-#ifndef __STR
 #ifdef __ASSEMBLY__
 #define __STR(x) x
 #else
-#define __STR(x) #x
+#define __STR(x) __stringify(x)
 #endif
-#endif /* __STR */
 
 #ifdef CONFIG_SMP
 #define M32R_LOCK      __STR(lock)
index 09200d4886e3acde18c29f2abdc1ab255f05ee0a..b1a4b6036591f0455b15bf2ba340922455a4e1e2 100644 (file)
@@ -9,5 +9,3 @@ obj-y   := process.o entry.o traps.o align.o irq.o setup.o time.o \
 
 obj-$(CONFIG_SMP)              += smp.o smpboot.o
 obj-$(CONFIG_MODULES)          += module.o
-
-EXTRA_AFLAGS   := -traditional
index 187c0eedaece0ec9018b896dcfb83e9eeef0835e..37491276c6cac799875ed858c7fe342439c037c0 100644 (file)
@@ -36,16 +36,6 @@ static const struct of_device_id of_default_bus_ids[] = {
        {},
 };
 
-/* Platform drivers register/unregister */
-static inline int of_register_platform_driver(struct of_platform_driver *drv)
-{
-       return of_register_driver(drv, &of_platform_bus_type);
-}
-static inline void of_unregister_platform_driver(struct of_platform_driver *drv)
-{
-       of_unregister_driver(drv);
-}
-
 /* Platform devices and busses creation */
 extern struct of_device *of_platform_device_create(struct device_node *np,
                                                const char *bus_id,
index 53b46507ffde02c9baab0c6343cd22ffb76c8092..d4aaa3489440d3b6579ae2b3b7636c2a2f35098e 100644 (file)
  *
  */
 
-/* Platform drivers register/unregister */
-static inline int of_register_platform_driver(struct of_platform_driver *drv)
-{
-       return of_register_driver(drv, &of_platform_bus_type);
-}
-static inline void of_unregister_platform_driver(struct of_platform_driver *drv)
-{
-       of_unregister_driver(drv);
-}
-
 /* Platform devices and busses creation */
 extern struct of_device *of_platform_device_create(struct device_node *np,
                                                   const char *bus_id,
index b6667ff059e5841dd02b599704646d8f7420bf23..88b5a2c4814d0423f60a02e1c994d5cb6c9e9775 100644 (file)
@@ -543,6 +543,13 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
 
                package_element = *top_object_list;
 
+               /* We must have a valid Package object */
+
+               if (!package_element ||
+                   (package_element->common.type != ACPI_TYPE_PACKAGE)) {
+                       return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+               }
+
                /*
                 * The sub_object_list will now point to an array of the
                 * four IRQ elements: Address, Pin, Source and source_index
index 7b7ddc2d51c965fe6d9c6b7519f94e92074ff536..420a96e7f2dbb1a31d299f70daa07f22e8b95db3 100644 (file)
@@ -754,11 +754,11 @@ static int __init ibft_check_nic_for(struct ibft_nic *nic, int entry)
                rc = 1;
                break;
        case ibft_eth_ip_addr:
-               if (!memcmp(nic->dhcp, nulls, sizeof(nic->dhcp)))
+               if (memcmp(nic->ip_addr, nulls, sizeof(nic->ip_addr)))
                        rc = 1;
                break;
        case ibft_eth_subnet_mask:
-               if (!memcmp(nic->dhcp, nulls, sizeof(nic->dhcp)))
+               if (nic->subnet_mask_prefix)
                        rc = 1;
                break;
        case ibft_eth_origin:
index 7359d9d88e4683d5fee89c8599d4b22ea2b508f6..acbce5745b0c8b41e2644ac05a3293d05c931165 100644 (file)
@@ -151,7 +151,7 @@ static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
        if (fnmode) {
                int do_translate;
 
-               trans = apple_find_translation((hid->product < 0x220 ||
+               trans = apple_find_translation((hid->product < 0x21d ||
                                        hid->product >= 0x300) ?
                                        powerbook_fn_keys : apple_fn_keys,
                                        usage->code);
index 5746a5903bcea1a17bfcc7349a2a867bd0833d32..8551693d645fc602fe5f3bf3ccd1352fefc439c2 100644 (file)
@@ -1293,6 +1293,7 @@ static const struct hid_device_id hid_blacklist[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
@@ -1824,6 +1825,9 @@ int hid_check_keys_pressed(struct hid_device *hid)
        struct hid_input *hidinput;
        int i;
 
+       if (!(hid->claimed & HID_CLAIMED_INPUT))
+               return 0;
+
        list_for_each_entry(hidinput, &hid->inputs, list) {
                for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
                        if (hidinput->input->key[i])
index bdeda4c7cc13ecd00202385050f03136122ff103..aa1b995dd0332cdc0d8e4e8496cf776238599c48 100644 (file)
 #define USB_DEVICE_ID_LOGITECH_FORCE3D_PRO     0xc286
 #define USB_DEVICE_ID_LOGITECH_WHEEL   0xc294
 #define USB_DEVICE_ID_LOGITECH_MOMO_WHEEL      0xc295
+#define USB_DEVICE_ID_LOGITECH_G25_WHEEL       0xc299
 #define USB_DEVICE_ID_LOGITECH_ELITE_KBD       0xc30a
 #define USB_DEVICE_ID_S510_RECEIVER    0xc50c
 #define USB_DEVICE_ID_S510_RECEIVER_2  0xc517
index 7b80cb694982015e1f2c10fbc7795b9d98f0754c..7afbaa0efd1812fedeeaeea934467138c5efb417 100644 (file)
@@ -297,6 +297,8 @@ static const struct hid_device_id lg_devices[] = {
                .driver_data = LG_FF },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2),
                .driver_data = LG_FF },
+       { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL),
+               .driver_data = LG_FF },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2),
                .driver_data = LG_FF2 },
        { }
index e263d47311790b7e215bfd4dbf119999e87064aa..00ccf4b1985d936280a0fc698fb5092950b1f5f1 100644 (file)
@@ -285,8 +285,10 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
 
                                if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWNAME(0))) {
                                        int len;
-                                       if (!hid->name)
-                                               return 0;
+                                       if (!hid->name) {
+                                               ret = 0;
+                                               break;
+                                       }
                                        len = strlen(hid->name) + 1;
                                        if (len > _IOC_SIZE(cmd))
                                                len = _IOC_SIZE(cmd);
@@ -297,8 +299,10 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
 
                                if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWPHYS(0))) {
                                        int len;
-                                       if (!hid->phys)
-                                               return 0;
+                                       if (!hid->phys) {
+                                               ret = 0;
+                                               break;
+                                       }
                                        len = strlen(hid->phys) + 1;
                                        if (len > _IOC_SIZE(cmd))
                                                len = _IOC_SIZE(cmd);
index 4306cb1b8ce5c91275be6566825ce02ec6f210fb..900ce18dd5490a4982e2f495693a9da8684e96e5 100644 (file)
@@ -662,8 +662,8 @@ void usbhid_close(struct hid_device *hid)
        spin_lock_irq(&usbhid->lock);
        if (!--hid->open) {
                spin_unlock_irq(&usbhid->lock);
+               hid_cancel_delayed_stuff(usbhid);
                usb_kill_urb(usbhid->urbin);
-               flush_scheduled_work();
                usbhid->intf->needs_remote_wakeup = 0;
        } else {
                spin_unlock_irq(&usbhid->lock);
index 7ba7d70f04d6caaa8d8e5ce0cb31aa37bfc1168b..7be52fe288eb9a06960aadaffddc65c24f134ede 100644 (file)
@@ -23,16 +23,18 @@ static char *serial_version = "$Revision: 1.25 $";
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <asm/uaccess.h>
 #include <linux/kernel.h>
 #include <linux/mutex.h>
 #include <linux/bitops.h>
+#include <linux/seq_file.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/dma.h>
 #include <asm/system.h>
-#include <linux/delay.h>
 
 #include <arch/svinto.h>
 
@@ -456,7 +458,6 @@ static struct e100_serial rs_table[] = {
 
 #define NR_PORTS (sizeof(rs_table)/sizeof(struct e100_serial))
 
-static struct ktermios *serial_termios[NR_PORTS];
 #ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
 static struct fast_timer fast_timers[NR_PORTS];
 #endif
@@ -4257,151 +4258,132 @@ rs_open(struct tty_struct *tty, struct file * filp)
        return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 /*
  * /proc fs routines....
  */
 
-static int line_info(char *buf, struct e100_serial *info)
+static void seq_line_info(struct seq_file *m, struct e100_serial *info)
 {
-       char    stat_buf[30];
-       int     ret;
        unsigned long tmp;
 
-       ret = sprintf(buf, "%d: uart:E100 port:%lX irq:%d",
-                     info->line, (unsigned long)info->ioport, info->irq);
+       seq_printf(m, "%d: uart:E100 port:%lX irq:%d",
+                  info->line, (unsigned long)info->ioport, info->irq);
 
        if (!info->ioport || (info->type == PORT_UNKNOWN)) {
-               ret += sprintf(buf+ret, "\n");
-               return ret;
+               seq_printf(m, "\n");
+               return;
        }
 
-       stat_buf[0] = 0;
-       stat_buf[1] = 0;
-       if (!E100_RTS_GET(info))
-               strcat(stat_buf, "|RTS");
-       if (!E100_CTS_GET(info))
-               strcat(stat_buf, "|CTS");
-       if (!E100_DTR_GET(info))
-               strcat(stat_buf, "|DTR");
-       if (!E100_DSR_GET(info))
-               strcat(stat_buf, "|DSR");
-       if (!E100_CD_GET(info))
-               strcat(stat_buf, "|CD");
-       if (!E100_RI_GET(info))
-               strcat(stat_buf, "|RI");
-
-       ret += sprintf(buf+ret, " baud:%d", info->baud);
-
-       ret += sprintf(buf+ret, " tx:%lu rx:%lu",
+       seq_printf(m, " baud:%d", info->baud);
+       seq_printf(m, " tx:%lu rx:%lu",
                       (unsigned long)info->icount.tx,
                       (unsigned long)info->icount.rx);
        tmp = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-       if (tmp) {
-               ret += sprintf(buf+ret, " tx_pend:%lu/%lu",
-                              (unsigned long)tmp,
-                              (unsigned long)SERIAL_XMIT_SIZE);
-       }
+       if (tmp)
+               seq_printf(m, " tx_pend:%lu/%lu",
+                          (unsigned long)tmp,
+                          (unsigned long)SERIAL_XMIT_SIZE);
 
-       ret += sprintf(buf+ret, " rx_pend:%lu/%lu",
-                      (unsigned long)info->recv_cnt,
-                      (unsigned long)info->max_recv_cnt);
+       seq_printf(m, " rx_pend:%lu/%lu",
+                  (unsigned long)info->recv_cnt,
+                  (unsigned long)info->max_recv_cnt);
 
 #if 1
        if (info->port.tty) {
-
                if (info->port.tty->stopped)
-                       ret += sprintf(buf+ret, " stopped:%i",
-                                      (int)info->port.tty->stopped);
+                       seq_printf(m, " stopped:%i",
+                                  (int)info->port.tty->stopped);
                if (info->port.tty->hw_stopped)
-                       ret += sprintf(buf+ret, " hw_stopped:%i",
-                                      (int)info->port.tty->hw_stopped);
+                       seq_printf(m, " hw_stopped:%i",
+                                  (int)info->port.tty->hw_stopped);
        }
 
        {
                unsigned char rstat = info->ioport[REG_STATUS];
-               if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect) )
-                       ret += sprintf(buf+ret, " xoff_detect:1");
+               if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect))
+                       seq_printf(m, " xoff_detect:1");
        }
 
 #endif
 
-
-
-
        if (info->icount.frame)
-               ret += sprintf(buf+ret, " fe:%lu",
-                              (unsigned long)info->icount.frame);
+               seq_printf(m, " fe:%lu", (unsigned long)info->icount.frame);
 
        if (info->icount.parity)
-               ret += sprintf(buf+ret, " pe:%lu",
-                              (unsigned long)info->icount.parity);
+               seq_printf(m, " pe:%lu", (unsigned long)info->icount.parity);
 
        if (info->icount.brk)
-               ret += sprintf(buf+ret, " brk:%lu",
-                              (unsigned long)info->icount.brk);
+               seq_printf(m, " brk:%lu", (unsigned long)info->icount.brk);
 
        if (info->icount.overrun)
-               ret += sprintf(buf+ret, " oe:%lu",
-                              (unsigned long)info->icount.overrun);
+               seq_printf(m, " oe:%lu", (unsigned long)info->icount.overrun);
 
        /*
         * Last thing is the RS-232 status lines
         */
-       ret += sprintf(buf+ret, " %s\n", stat_buf+1);
-       return ret;
+       if (!E100_RTS_GET(info))
+               seq_puts(m, "|RTS");
+       if (!E100_CTS_GET(info))
+               seq_puts(m, "|CTS");
+       if (!E100_DTR_GET(info))
+               seq_puts(m, "|DTR");
+       if (!E100_DSR_GET(info))
+               seq_puts(m, "|DSR");
+       if (!E100_CD_GET(info))
+               seq_puts(m, "|CD");
+       if (!E100_RI_GET(info))
+               seq_puts(m, "|RI");
+       seq_puts(m, "\n");
 }
 
-int rs_read_proc(char *page, char **start, off_t off, int count,
-                int *eof, void *data)
+
+static int crisv10_proc_show(struct seq_file *m, void *v)
 {
-       int i, len = 0, l;
-       off_t   begin = 0;
+       int i;
 
-       len += sprintf(page, "serinfo:1.0 driver:%s\n",
-                      serial_version);
-       for (i = 0; i < NR_PORTS && len < 4000; i++) {
+       seq_printf(m, "serinfo:1.0 driver:%s\n", serial_version);
+
+       for (i = 0; i < NR_PORTS; i++) {
                if (!rs_table[i].enabled)
                        continue;
-               l = line_info(page + len, &rs_table[i]);
-               len += l;
-               if (len+begin > off+count)
-                       goto done;
-               if (len+begin < off) {
-                       begin += len;
-                       len = 0;
-               }
+               seq_line_info(m, &rs_table[i]);
        }
 #ifdef DEBUG_LOG_INCLUDED
        for (i = 0; i < debug_log_pos; i++) {
-               len += sprintf(page + len, "%-4i %lu.%lu ", i, debug_log[i].time, timer_data_to_ns(debug_log[i].timer_data));
-               len += sprintf(page + len, debug_log[i].string, debug_log[i].value);
-               if (len+begin > off+count)
-                       goto done;
-               if (len+begin < off) {
-                       begin += len;
-                       len = 0;
-               }
+               seq_printf(m, "%-4i %lu.%lu ",
+                        i, debug_log[i].time,
+                        timer_data_to_ns(debug_log[i].timer_data));
+               seq_printf(m, debug_log[i].string, debug_log[i].value);
        }
-       len += sprintf(page + len, "debug_log %i/%i  %li bytes\n",
-                      i, DEBUG_LOG_SIZE, begin+len);
+       seq_printf(m, "debug_log %i/%i\n", i, DEBUG_LOG_SIZE);
        debug_log_pos = 0;
 #endif
+       return 0;
+}
 
-       *eof = 1;
-done:
-       if (off >= len+begin)
-               return 0;
-       *start = page + (off-begin);
-       return ((count < begin+len-off) ? count : begin+len-off);
+static int crisv10_proc_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, crisv10_proc_show, NULL);
 }
 
+static const struct file_operations crisv10_proc_fops = {
+       .owner          = THIS_MODULE,
+       .open           = crisv10_proc_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+#endif
+
+
 /* Finally, routines used to initialize the serial driver. */
 
-static void
-show_serial_version(void)
+static void show_serial_version(void)
 {
        printk(KERN_INFO
-              "ETRAX 100LX serial-driver %s, (c) 2000-2004 Axis Communications AB\r\n",
+              "ETRAX 100LX serial-driver %s, "
+              "(c) 2000-2004 Axis Communications AB\r\n",
               &serial_version[11]); /* "$Revision: x.yy" */
 }
 
@@ -4425,13 +4407,14 @@ static const struct tty_operations rs_ops = {
        .break_ctl = rs_break,
        .send_xchar = rs_send_xchar,
        .wait_until_sent = rs_wait_until_sent,
-       .read_proc = rs_read_proc,
        .tiocmget = rs_tiocmget,
-       .tiocmset = rs_tiocmset
+       .tiocmset = rs_tiocmset,
+#ifdef CONFIG_PROC_FS
+       .proc_fops = &crisv10_proc_fops,
+#endif
 };
 
-static int __init
-rs_init(void)
+static int __init rs_init(void)
 {
        int i;
        struct e100_serial *info;
index d012edda6d118641e74fd9e74f39b115526cecf1..38e86b84dce04e610eb2fafc7fbc1b8fa527029e 100644 (file)
@@ -1282,7 +1282,7 @@ static int vgacon_font_get(struct vc_data *c, struct console_font *font)
        font->charcount = vga_512_chars ? 512 : 256;
        if (!font->data)
                return 0;
-       return vgacon_do_font_op(&state, font->data, 0, 0);
+       return vgacon_do_font_op(&state, font->data, 0, vga_512_chars);
 }
 
 #else
index 75f7ddacf7d6d0575577e6172185fdc32d5f12ee..3077d8f16523010a5aaaf90d017900bd723aa12a 100644 (file)
@@ -70,8 +70,10 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
                 * Otherwise it's an offset mount and we need to check
                 * if we can umount its mount, if there is one.
                 */
-               if (!d_mountpoint(dentry))
+               if (!d_mountpoint(dentry)) {
+                       status = 0;
                        goto done;
+               }
        }
 
        /* Update the expiry counter if fs is busy */
index 70cfc4b84ae0995a1d7c66d21ecd833a36b02e74..fdb66faa24f19b78e169467c5775d1145737b742 100644 (file)
@@ -1388,7 +1388,7 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
        prstatus->pr_sigpend = p->pending.signal.sig[0];
        prstatus->pr_sighold = p->blocked.sig[0];
        prstatus->pr_pid = task_pid_vnr(p);
-       prstatus->pr_ppid = task_pid_vnr(p->parent);
+       prstatus->pr_ppid = task_pid_vnr(p->real_parent);
        prstatus->pr_pgrp = task_pgrp_vnr(p);
        prstatus->pr_sid = task_session_vnr(p);
        if (thread_group_leader(p)) {
@@ -1433,7 +1433,7 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
        psinfo->pr_psargs[len] = 0;
 
        psinfo->pr_pid = task_pid_vnr(p);
-       psinfo->pr_ppid = task_pid_vnr(p->parent);
+       psinfo->pr_ppid = task_pid_vnr(p->real_parent);
        psinfo->pr_pgrp = task_pgrp_vnr(p);
        psinfo->pr_sid = task_session_vnr(p);
 
index b3e5be7514f5ce366b2a87262489bc88e1835a59..aed297739eb0796d8c6212842003fb2976c5fba0 100644 (file)
@@ -2397,7 +2397,8 @@ block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
        if ((page->mapping != inode->i_mapping) ||
            (page_offset(page) > size)) {
                /* page got truncated out from underneath us */
-               goto out_unlock;
+               unlock_page(page);
+               goto out;
        }
 
        /* page is wholly or partially inside EOF */
@@ -2411,14 +2412,15 @@ block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
                ret = block_commit_write(page, 0, end);
 
        if (unlikely(ret)) {
+               unlock_page(page);
                if (ret == -ENOMEM)
                        ret = VM_FAULT_OOM;
                else /* -ENOSPC, -EIO, etc */
                        ret = VM_FAULT_SIGBUS;
-       }
+       } else
+               ret = VM_FAULT_LOCKED;
 
-out_unlock:
-       unlock_page(page);
+out:
        return ret;
 }
 
index a3a8ce83940f1dfdfeb2430571f6dc19359e253f..639177b0eeac9bc74ccaca2c1b2f6296f7b0f23d 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -69,17 +69,18 @@ int suid_dumpable = 0;
 static LIST_HEAD(formats);
 static DEFINE_RWLOCK(binfmt_lock);
 
-int register_binfmt(struct linux_binfmt * fmt)
+int __register_binfmt(struct linux_binfmt * fmt, int insert)
 {
        if (!fmt)
                return -EINVAL;
        write_lock(&binfmt_lock);
-       list_add(&fmt->lh, &formats);
+       insert ? list_add(&fmt->lh, &formats) :
+                list_add_tail(&fmt->lh, &formats);
        write_unlock(&binfmt_lock);
        return 0;       
 }
 
-EXPORT_SYMBOL(register_binfmt);
+EXPORT_SYMBOL(__register_binfmt);
 
 void unregister_binfmt(struct linux_binfmt * fmt)
 {
index 7d604480557afb80a77dc7b4a106a5c9f9b6a43a..b574431a031d5cd9721de53c46a80825f752bb9d 100644 (file)
@@ -290,6 +290,21 @@ out_attach:
        else
                mlog_errno(ret);
 
+       /*
+        * In case of error, manually free the allocation and do the iput().
+        * We need to do this because error here means no d_instantiate(),
+        * which means iput() will not be called during dput(dentry).
+        */
+       if (ret < 0 && !alias) {
+               ocfs2_lock_res_free(&dl->dl_lockres);
+               BUG_ON(dl->dl_count != 1);
+               spin_lock(&dentry_attach_lock);
+               dentry->d_fsdata = NULL;
+               spin_unlock(&dentry_attach_lock);
+               kfree(dl);
+               iput(inode);
+       }
+
        dput(alias);
 
        return ret;
index e71160cda1100a1d5b9c840fbbbe784058a682fe..c5752305627c669359f6e6cd688b9f3eecbb6958 100644 (file)
@@ -2697,7 +2697,7 @@ static int ocfs2_dx_dir_index_block(struct inode *dir,
                                    u32 *num_dx_entries,
                                    struct buffer_head *dirent_bh)
 {
-       int ret, namelen, i;
+       int ret = 0, namelen, i;
        char *de_buf, *limit;
        struct ocfs2_dir_entry *de;
        struct buffer_head *dx_leaf_bh;
@@ -2934,7 +2934,7 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
         */
        BUG_ON(alloc > 2);
 
-       ret = ocfs2_reserve_clusters(osb, alloc, &data_ac);
+       ret = ocfs2_reserve_clusters(osb, alloc + dx_alloc, &data_ac);
        if (ret) {
                mlog_errno(ret);
                goto out;
index de3da8eb558ced894690263794c4c1f28652f351..15713cbb865c8ee66cde272a2e95bfb47ceb3429 100644 (file)
@@ -100,7 +100,8 @@ static struct dentry *ocfs2_get_dentry(struct super_block *sb,
 
        /* If the inode allocator bit is clear, this inode must be stale */
        if (!set) {
-               mlog(0, "inode %llu suballoc bit is clear\n", blkno);
+               mlog(0, "inode %llu suballoc bit is clear\n",
+                    (unsigned long long)blkno);
                status = -ESTALE;
                goto unlock_nfs_sync;
        }
@@ -114,7 +115,7 @@ check_err:
        if (status < 0) {
                if (status == -ESTALE) {
                        mlog(0, "stale inode ino: %llu generation: %u\n",
-                            blkno, handle->ih_generation);
+                            (unsigned long long)blkno, handle->ih_generation);
                }
                result = ERR_PTR(status);
                goto bail;
@@ -129,8 +130,8 @@ check_err:
 check_gen:
        if (handle->ih_generation != inode->i_generation) {
                iput(inode);
-               mlog(0, "stale inode ino: %llu generation: %u\n", blkno,
-                    handle->ih_generation);
+               mlog(0, "stale inode ino: %llu generation: %u\n",
+                    (unsigned long long)blkno, handle->ih_generation);
                result = ERR_PTR(-ESTALE);
                goto bail;
        }
index 619dd7f6c053c1562863707bebc7c3c6e1753b52..eb7b76331eb7733f4d9f4a5494b3509054a886b1 100644 (file)
@@ -437,8 +437,9 @@ static inline int ocfs2_unlink_credits(struct super_block *sb)
 }
 
 /* dinode + orphan dir dinode + inode alloc dinode + orphan dir entry +
- * inode alloc group descriptor + orphan dir index leaf */
-#define OCFS2_DELETE_INODE_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 3)
+ * inode alloc group descriptor + orphan dir index root +
+ * orphan dir index leaf */
+#define OCFS2_DELETE_INODE_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 4)
 
 /* dinode update, old dir dinode update, new dir dinode update, old
  * dir dir entry, new dir dir entry, dir entry update for renaming
index 2220f93f668bc9d0b0cc5446efdb612ccfd1d4bb..33464c6b60a2ca91252af9d4f588398379089c04 100644 (file)
@@ -1025,10 +1025,8 @@ static int ocfs2_rename(struct inode *old_dir,
        struct inode *orphan_dir = NULL;
        struct ocfs2_dinode *newfe = NULL;
        char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
-       struct buffer_head *orphan_entry_bh = NULL;
        struct buffer_head *newfe_bh = NULL;
        struct buffer_head *old_inode_bh = NULL;
-       struct buffer_head *insert_entry_bh = NULL;
        struct ocfs2_super *osb = NULL;
        u64 newfe_blkno, old_de_ino;
        handle_t *handle = NULL;
@@ -1455,8 +1453,6 @@ bail:
        brelse(old_inode_bh);
        brelse(old_dir_bh);
        brelse(new_dir_bh);
-       brelse(orphan_entry_bh);
-       brelse(insert_entry_bh);
 
        mlog_exit(status);
 
index b4ca5911caafc3824f6cc8c1a61e69f5a316c4eb..8439f6b324b91ef1fc7bf2f459f569a49365ee77 100644 (file)
@@ -2197,26 +2197,29 @@ static int ocfs2_get_suballoc_slot_bit(struct ocfs2_super *osb, u64 blkno,
        struct buffer_head *inode_bh = NULL;
        struct ocfs2_dinode *inode_fe;
 
-       mlog_entry("blkno: %llu\n", blkno);
+       mlog_entry("blkno: %llu\n", (unsigned long long)blkno);
 
        /* dirty read disk */
        status = ocfs2_read_blocks_sync(osb, blkno, 1, &inode_bh);
        if (status < 0) {
-               mlog(ML_ERROR, "read block %llu failed %d\n", blkno, status);
+               mlog(ML_ERROR, "read block %llu failed %d\n",
+                    (unsigned long long)blkno, status);
                goto bail;
        }
 
        inode_fe = (struct ocfs2_dinode *) inode_bh->b_data;
        if (!OCFS2_IS_VALID_DINODE(inode_fe)) {
-               mlog(ML_ERROR, "invalid inode %llu requested\n", blkno);
+               mlog(ML_ERROR, "invalid inode %llu requested\n",
+                    (unsigned long long)blkno);
                status = -EINVAL;
                goto bail;
        }
 
-       if (le16_to_cpu(inode_fe->i_suballoc_slot) != OCFS2_INVALID_SLOT &&
+       if (le16_to_cpu(inode_fe->i_suballoc_slot) != (u16)OCFS2_INVALID_SLOT &&
            (u32)le16_to_cpu(inode_fe->i_suballoc_slot) > osb->max_slots - 1) {
                mlog(ML_ERROR, "inode %llu has invalid suballoc slot %u\n",
-                    blkno, (u32)le16_to_cpu(inode_fe->i_suballoc_slot));
+                    (unsigned long long)blkno,
+                    (u32)le16_to_cpu(inode_fe->i_suballoc_slot));
                status = -EINVAL;
                goto bail;
        }
@@ -2251,7 +2254,8 @@ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb,
        u64 bg_blkno;
        int status;
 
-       mlog_entry("blkno: %llu bit: %u\n", blkno, (unsigned int)bit);
+       mlog_entry("blkno: %llu bit: %u\n", (unsigned long long)blkno,
+                  (unsigned int)bit);
 
        alloc_fe = (struct ocfs2_dinode *)alloc_bh->b_data;
        if ((bit + 1) > ocfs2_bits_per_group(&alloc_fe->id2.i_chain)) {
@@ -2266,7 +2270,8 @@ static int ocfs2_test_suballoc_bit(struct ocfs2_super *osb,
        status = ocfs2_read_group_descriptor(suballoc, alloc_fe, bg_blkno,
                                             &group_bh);
        if (status < 0) {
-               mlog(ML_ERROR, "read group %llu failed %d\n", bg_blkno, status);
+               mlog(ML_ERROR, "read group %llu failed %d\n",
+                    (unsigned long long)bg_blkno, status);
                goto bail;
        }
 
@@ -2300,7 +2305,7 @@ int ocfs2_test_inode_bit(struct ocfs2_super *osb, u64 blkno, int *res)
        struct inode *inode_alloc_inode;
        struct buffer_head *alloc_bh = NULL;
 
-       mlog_entry("blkno: %llu", blkno);
+       mlog_entry("blkno: %llu", (unsigned long long)blkno);
 
        status = ocfs2_get_suballoc_slot_bit(osb, blkno, &suballoc_slot,
                                             &suballoc_bit);
index 74ea974f5ca6d86bd249ee920527be9c95157522..c6b0302af4c40268e9511e34d16f3385f817e1d6 100644 (file)
@@ -35,7 +35,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
 #define K(x) ((x) << (PAGE_SHIFT - 10))
        si_meminfo(&i);
        si_swapinfo(&i);
-       committed = atomic_long_read(&vm_committed_space);
+       committed = percpu_counter_read_positive(&vm_committed_as);
        allowed = ((totalram_pages - hugetlb_total_pages())
                * sysctl_overcommit_ratio / 100) + total_swap_pages;
 
index 39e4ad4f59f4ef84fff3e809b1494a1eedb41267..6f61b7cc32e0e09c39aea2dd31cf64e2bc049060 100644 (file)
@@ -665,6 +665,10 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
                goto out_task;
 
        ret = 0;
+
+       if (!count)
+               goto out_task;
+
        mm = get_task_mm(task);
        if (!mm)
                goto out_task;
index 7abdaa91ccd3738ea7e8633f16c78f3031ce15bf..3673a13b6703fd22fea48db3443fb0a92a5fea52 100644 (file)
@@ -132,9 +132,9 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
 #define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l))
 
 #define atomic_long_cmpxchg(l, old, new) \
-       (atomic_cmpxchg((atomic64_t *)(l), (old), (new)))
+       (atomic64_cmpxchg((atomic64_t *)(l), (old), (new)))
 #define atomic_long_xchg(v, new) \
-       (atomic_xchg((atomic64_t *)(l), (new)))
+       (atomic64_xchg((atomic64_t *)(l), (new)))
 
 #else  /*  BITS_PER_LONG == 64  */
 
index 6638b8148de7d9a45635ca95b6952b6651df2542..61ee18c1bdb44bd714b39b840d7b73b4ad02698a 100644 (file)
@@ -82,7 +82,19 @@ struct linux_binfmt {
        int hasvdso;
 };
 
-extern int register_binfmt(struct linux_binfmt *);
+extern int __register_binfmt(struct linux_binfmt *fmt, int insert);
+
+/* Registration of default binfmt handlers */
+static inline int register_binfmt(struct linux_binfmt *fmt)
+{
+       return __register_binfmt(fmt, 0);
+}
+/* Same as above, but adds a new binfmt at the top of the list */
+static inline int insert_binfmt(struct linux_binfmt *fmt)
+{
+       return __register_binfmt(fmt, 1);
+}
+
 extern void unregister_binfmt(struct linux_binfmt *);
 
 extern int prepare_binprm(struct linux_binprm *);
index a9e3b76aa8846d2b6172cfca09a15d6c0d2b4d83..25b9ca93d2327e942da46f8d9545a7a514c6ed13 100644 (file)
@@ -56,7 +56,7 @@ extern void mem_cgroup_move_lists(struct page *page,
                                  enum lru_list from, enum lru_list to);
 extern void mem_cgroup_uncharge_page(struct page *page);
 extern void mem_cgroup_uncharge_cache_page(struct page *page);
-extern int mem_cgroup_shrink_usage(struct page *page,
+extern int mem_cgroup_shmem_charge_fallback(struct page *page,
                        struct mm_struct *mm, gfp_t gfp_mask);
 
 extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
@@ -155,7 +155,7 @@ static inline void mem_cgroup_uncharge_cache_page(struct page *page)
 {
 }
 
-static inline int mem_cgroup_shrink_usage(struct page *page,
+static inline int mem_cgroup_shmem_charge_fallback(struct page *page,
                        struct mm_struct *mm, gfp_t gfp_mask)
 {
        return 0;
index 30d1073bac3ba63459123db829283fa9ec7eb8e5..9872d6ca58ae9a7b88dcc97387f86a434a633db5 100644 (file)
 
 #ifdef __KERNEL__
 #include <linux/mm.h>
+#include <linux/percpu_counter.h>
 
 #include <asm/atomic.h>
 
 extern int sysctl_overcommit_memory;
 extern int sysctl_overcommit_ratio;
-extern atomic_long_t vm_committed_space;
+extern struct percpu_counter vm_committed_as;
 
-#ifdef CONFIG_SMP
-extern void vm_acct_memory(long pages);
-#else
 static inline void vm_acct_memory(long pages)
 {
-       atomic_long_add(pages, &vm_committed_space);
+       percpu_counter_add(&vm_committed_as, pages);
 }
-#endif
 
 static inline void vm_unacct_memory(long pages)
 {
index 3d327b67d7e2b5927cab4739a061dbf35a10f91e..908406651330e700bbea64084599d023fa77cad7 100644 (file)
@@ -51,6 +51,16 @@ extern int of_register_driver(struct of_platform_driver *drv,
                              struct bus_type *bus);
 extern void of_unregister_driver(struct of_platform_driver *drv);
 
+/* Platform drivers register/unregister */
+static inline int of_register_platform_driver(struct of_platform_driver *drv)
+{
+       return of_register_driver(drv, &of_platform_bus_type);
+}
+static inline void of_unregister_platform_driver(struct of_platform_driver *drv)
+{
+       of_unregister_driver(drv);
+}
+
 #include <asm/of_platform.h>
 
 extern struct of_device *of_find_device_by_node(struct device_node *np);
index e3d2c7dd59b9791ad14c8b48e5fb804a38052ac8..ea78fa101ad6a4325209f6bd9b3c350298d1e4e2 100644 (file)
@@ -103,6 +103,9 @@ static unsigned long one_ul = 1;
 static int one_hundred = 100;
 static int one_thousand = 1000;
 
+/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
+static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
+
 /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
 static int maxolduid = 65535;
 static int minolduid;
@@ -1006,7 +1009,7 @@ static struct ctl_table vm_table[] = {
                .mode           = 0644,
                .proc_handler   = &dirty_bytes_handler,
                .strategy       = &sysctl_intvec,
-               .extra1         = &one_ul,
+               .extra1         = &dirty_bytes_min,
        },
        {
                .procname       = "dirty_writeback_centisecs",
index e44fb0fbb80e0890923385d3e97aff8dfa9d9a1b..01c2d8f146851bb5c3a80c506a6d53359de04217 100644 (file)
@@ -1024,9 +1024,7 @@ static struct mem_cgroup *try_get_mem_cgroup_from_swapcache(struct page *page)
                return NULL;
 
        pc = lookup_page_cgroup(page);
-       /*
-        * Used bit of swapcache is solid under page lock.
-        */
+       lock_page_cgroup(pc);
        if (PageCgroupUsed(pc)) {
                mem = pc->mem_cgroup;
                if (mem && !css_tryget(&mem->css))
@@ -1040,6 +1038,7 @@ static struct mem_cgroup *try_get_mem_cgroup_from_swapcache(struct page *page)
                        mem = NULL;
                rcu_read_unlock();
        }
+       unlock_page_cgroup(pc);
        return mem;
 }
 
@@ -1618,37 +1617,28 @@ void mem_cgroup_end_migration(struct mem_cgroup *mem,
 }
 
 /*
- * A call to try to shrink memory usage under specified resource controller.
- * This is typically used for page reclaiming for shmem for reducing side
- * effect of page allocation from shmem, which is used by some mem_cgroup.
+ * A call to try to shrink memory usage on charge failure at shmem's swapin.
+ * Calling hierarchical_reclaim is not enough because we should update
+ * last_oom_jiffies to prevent pagefault_out_of_memory from invoking global OOM.
+ * Moreover considering hierarchy, we should reclaim from the mem_over_limit,
+ * not from the memcg which this page would be charged to.
+ * try_charge_swapin does all of these works properly.
  */
-int mem_cgroup_shrink_usage(struct page *page,
+int mem_cgroup_shmem_charge_fallback(struct page *page,
                            struct mm_struct *mm,
                            gfp_t gfp_mask)
 {
        struct mem_cgroup *mem = NULL;
-       int progress = 0;
-       int retry = MEM_CGROUP_RECLAIM_RETRIES;
+       int ret;
 
        if (mem_cgroup_disabled())
                return 0;
-       if (page)
-               mem = try_get_mem_cgroup_from_swapcache(page);
-       if (!mem && mm)
-               mem = try_get_mem_cgroup_from_mm(mm);
-       if (unlikely(!mem))
-               return 0;
 
-       do {
-               progress = mem_cgroup_hierarchical_reclaim(mem,
-                                       gfp_mask, true, false);
-               progress += mem_cgroup_check_under_limit(mem);
-       } while (!progress && --retry);
+       ret = mem_cgroup_try_charge_swapin(mm, page, gfp_mask, &mem);
+       if (!ret)
+               mem_cgroup_cancel_charge_swapin(mem); /* it does !mem check */
 
-       css_put(&mem->css);
-       if (!retry)
-               return -ENOMEM;
-       return 0;
+       return ret;
 }
 
 static DEFINE_MUTEX(set_limit_mutex);
index cf6873e91c6a7eeb166031a7c8ae9fd4f3dda100..4126dd16778c36595af938988c9d8ec144d0f8aa 100644 (file)
@@ -1971,6 +1971,15 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
                                ret = tmp;
                                goto unwritable_page;
                        }
+                       if (unlikely(!(tmp & VM_FAULT_LOCKED))) {
+                               lock_page(old_page);
+                               if (!old_page->mapping) {
+                                       ret = 0; /* retry the fault */
+                                       unlock_page(old_page);
+                                       goto unwritable_page;
+                               }
+                       } else
+                               VM_BUG_ON(!PageLocked(old_page));
 
                        /*
                         * Since we dropped the lock we need to revalidate
@@ -1980,9 +1989,11 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
                         */
                        page_table = pte_offset_map_lock(mm, pmd, address,
                                                         &ptl);
-                       page_cache_release(old_page);
-                       if (!pte_same(*page_table, orig_pte))
+                       if (!pte_same(*page_table, orig_pte)) {
+                               unlock_page(old_page);
+                               page_cache_release(old_page);
                                goto unlock;
+                       }
 
                        page_mkwrite = 1;
                }
@@ -2094,9 +2105,6 @@ gotten:
 unlock:
        pte_unmap_unlock(page_table, ptl);
        if (dirty_page) {
-               if (vma->vm_file)
-                       file_update_time(vma->vm_file);
-
                /*
                 * Yes, Virginia, this is actually required to prevent a race
                 * with clear_page_dirty_for_io() from clearing the page dirty
@@ -2105,16 +2113,41 @@ unlock:
                 *
                 * do_no_page is protected similarly.
                 */
-               wait_on_page_locked(dirty_page);
-               set_page_dirty_balance(dirty_page, page_mkwrite);
+               if (!page_mkwrite) {
+                       wait_on_page_locked(dirty_page);
+                       set_page_dirty_balance(dirty_page, page_mkwrite);
+               }
                put_page(dirty_page);
+               if (page_mkwrite) {
+                       struct address_space *mapping = dirty_page->mapping;
+
+                       set_page_dirty(dirty_page);
+                       unlock_page(dirty_page);
+                       page_cache_release(dirty_page);
+                       if (mapping)    {
+                               /*
+                                * Some device drivers do not set page.mapping
+                                * but still dirty their pages
+                                */
+                               balance_dirty_pages_ratelimited(mapping);
+                       }
+               }
+
+               /* file_update_time outside page_lock */
+               if (vma->vm_file)
+                       file_update_time(vma->vm_file);
        }
        return ret;
 oom_free_new:
        page_cache_release(new_page);
 oom:
-       if (old_page)
+       if (old_page) {
+               if (page_mkwrite) {
+                       unlock_page(old_page);
+                       page_cache_release(old_page);
+               }
                page_cache_release(old_page);
+       }
        return VM_FAULT_OOM;
 
 unwritable_page:
@@ -2458,8 +2491,7 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
 
        if (mem_cgroup_try_charge_swapin(mm, page, GFP_KERNEL, &ptr)) {
                ret = VM_FAULT_OOM;
-               unlock_page(page);
-               goto out;
+               goto out_page;
        }
 
        /*
@@ -2521,6 +2553,7 @@ out:
 out_nomap:
        mem_cgroup_cancel_charge_swapin(ptr);
        pte_unmap_unlock(page_table, ptl);
+out_page:
        unlock_page(page);
        page_cache_release(page);
        return ret;
@@ -2664,27 +2697,22 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
                                int tmp;
 
                                unlock_page(page);
-                               vmf.flags |= FAULT_FLAG_MKWRITE;
+                               vmf.flags = FAULT_FLAG_WRITE|FAULT_FLAG_MKWRITE;
                                tmp = vma->vm_ops->page_mkwrite(vma, &vmf);
                                if (unlikely(tmp &
                                          (VM_FAULT_ERROR | VM_FAULT_NOPAGE))) {
                                        ret = tmp;
-                                       anon = 1; /* no anon but release vmf.page */
-                                       goto out_unlocked;
-                               }
-                               lock_page(page);
-                               /*
-                                * XXX: this is not quite right (racy vs
-                                * invalidate) to unlock and relock the page
-                                * like this, however a better fix requires
-                                * reworking page_mkwrite locking API, which
-                                * is better done later.
-                                */
-                               if (!page->mapping) {
-                                       ret = 0;
-                                       anon = 1; /* no anon but release vmf.page */
-                                       goto out;
+                                       goto unwritable_page;
                                }
+                               if (unlikely(!(tmp & VM_FAULT_LOCKED))) {
+                                       lock_page(page);
+                                       if (!page->mapping) {
+                                               ret = 0; /* retry the fault */
+                                               unlock_page(page);
+                                               goto unwritable_page;
+                                       }
+                               } else
+                                       VM_BUG_ON(!PageLocked(page));
                                page_mkwrite = 1;
                        }
                }
@@ -2736,19 +2764,35 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
        pte_unmap_unlock(page_table, ptl);
 
 out:
-       unlock_page(vmf.page);
-out_unlocked:
-       if (anon)
-               page_cache_release(vmf.page);
-       else if (dirty_page) {
-               if (vma->vm_file)
-                       file_update_time(vma->vm_file);
+       if (dirty_page) {
+               struct address_space *mapping = page->mapping;
 
-               set_page_dirty_balance(dirty_page, page_mkwrite);
+               if (set_page_dirty(dirty_page))
+                       page_mkwrite = 1;
+               unlock_page(dirty_page);
                put_page(dirty_page);
+               if (page_mkwrite && mapping) {
+                       /*
+                        * Some device drivers do not set page.mapping but still
+                        * dirty their pages
+                        */
+                       balance_dirty_pages_ratelimited(mapping);
+               }
+
+               /* file_update_time outside page_lock */
+               if (vma->vm_file)
+                       file_update_time(vma->vm_file);
+       } else {
+               unlock_page(vmf.page);
+               if (anon)
+                       page_cache_release(vmf.page);
        }
 
        return ret;
+
+unwritable_page:
+       page_cache_release(page);
+       return ret;
 }
 
 static int do_linear_fault(struct mm_struct *mm, struct vm_area_struct *vma,
index 3303d1ba8e87aca1ba34ca74f92d0cd9038de396..6b7b1a95944bf267bd21cd981703280fe25a39e9 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -85,7 +85,7 @@ EXPORT_SYMBOL(vm_get_page_prot);
 int sysctl_overcommit_memory = OVERCOMMIT_GUESS;  /* heuristic overcommit */
 int sysctl_overcommit_ratio = 50;      /* default is 50% */
 int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
-atomic_long_t vm_committed_space = ATOMIC_LONG_INIT(0);
+struct percpu_counter vm_committed_as;
 
 /*
  * Check that a process has enough memory to allocate a new virtual
@@ -179,11 +179,7 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin)
        if (mm)
                allowed -= mm->total_vm / 32;
 
-       /*
-        * cast `allowed' as a signed long because vm_committed_space
-        * sometimes has a negative value
-        */
-       if (atomic_long_read(&vm_committed_space) < (long)allowed)
+       if (percpu_counter_read_positive(&vm_committed_as) < allowed)
                return 0;
 error:
        vm_unacct_memory(pages);
@@ -2481,4 +2477,8 @@ void mm_drop_all_locks(struct mm_struct *mm)
  */
 void __init mmap_init(void)
 {
+       int ret;
+
+       ret = percpu_counter_init(&vm_committed_as, 0);
+       VM_BUG_ON(ret);
 }
index 72eda4aee2cb46d72e070271d82ae13daef78b36..809998aa7b509dd072862def05f420a14e1185cf 100644 (file)
@@ -62,7 +62,7 @@ void *high_memory;
 struct page *mem_map;
 unsigned long max_mapnr;
 unsigned long num_physpages;
-atomic_long_t vm_committed_space = ATOMIC_LONG_INIT(0);
+struct percpu_counter vm_committed_as;
 int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */
 int sysctl_overcommit_ratio = 50; /* default is 50% */
 int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT;
@@ -463,6 +463,10 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
  */
 void __init mmap_init(void)
 {
+       int ret;
+
+       ret = percpu_counter_init(&vm_committed_as, 0);
+       VM_BUG_ON(ret);
        vm_region_jar = KMEM_CACHE(vm_region, SLAB_PANIC);
 }
 
@@ -1847,12 +1851,9 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin)
        if (mm)
                allowed -= mm->total_vm / 32;
 
-       /*
-        * cast `allowed' as a signed long because vm_committed_space
-        * sometimes has a negative value
-        */
-       if (atomic_long_read(&vm_committed_space) < (long)allowed)
+       if (percpu_counter_read_positive(&vm_committed_as) < allowed)
                return 0;
+
 error:
        vm_unacct_memory(pages);
 
index f9cb20ebb990468d4fb88059f5dc8570b2fb80da..b25f95ce3db76bb3e04658b3d6a0273729fbae55 100644 (file)
@@ -1340,8 +1340,12 @@ repeat:
                        shmem_swp_unmap(entry);
                        spin_unlock(&info->lock);
                        if (error == -ENOMEM) {
-                               /* allow reclaim from this memory cgroup */
-                               error = mem_cgroup_shrink_usage(swappage,
+                               /*
+                                * reclaim from proper memory cgroup and
+                                * call memcg's OOM if needed.
+                                */
+                               error = mem_cgroup_shmem_charge_fallback(
+                                                               swappage,
                                                                current->mm,
                                                                gfp);
                                if (error) {
index bede23ce64ea28e52d991168f2c93cd2243c893a..cb29ae5d33abfce703991cbfebd7bc1956752942 100644 (file)
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -491,49 +491,6 @@ unsigned pagevec_lookup_tag(struct pagevec *pvec, struct address_space *mapping,
 
 EXPORT_SYMBOL(pagevec_lookup_tag);
 
-#ifdef CONFIG_SMP
-/*
- * We tolerate a little inaccuracy to avoid ping-ponging the counter between
- * CPUs
- */
-#define ACCT_THRESHOLD max(16, NR_CPUS * 2)
-
-static DEFINE_PER_CPU(long, committed_space);
-
-void vm_acct_memory(long pages)
-{
-       long *local;
-
-       preempt_disable();
-       local = &__get_cpu_var(committed_space);
-       *local += pages;
-       if (*local > ACCT_THRESHOLD || *local < -ACCT_THRESHOLD) {
-               atomic_long_add(*local, &vm_committed_space);
-               *local = 0;
-       }
-       preempt_enable();
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-
-/* Drop the CPU's cached committed space back into the central pool. */
-static int cpu_swap_callback(struct notifier_block *nfb,
-                            unsigned long action,
-                            void *hcpu)
-{
-       long *committed;
-
-       committed = &per_cpu(committed_space, (long)hcpu);
-       if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) {
-               atomic_long_add(*committed, &vm_committed_space);
-               *committed = 0;
-               drain_cpu_pagevecs((long)hcpu);
-       }
-       return NOTIFY_OK;
-}
-#endif /* CONFIG_HOTPLUG_CPU */
-#endif /* CONFIG_SMP */
-
 /*
  * Perform any setup for the swap system
  */
@@ -554,7 +511,4 @@ void __init swap_setup(void)
         * Right now other parts of the system means that we
         * _really_ don't want to cluster much more
         */
-#ifdef CONFIG_HOTPLUG_CPU
-       hotcpu_notifier(cpu_swap_callback, 0);
-#endif
 }
index eac9577941f935a0d8f281a6e851b68995e50314..5fa3eda1f03fccb6626f08c8e7bdad53326bce84 100644 (file)
@@ -1471,7 +1471,7 @@ static void shrink_zone(int priority, struct zone *zone,
 
        for_each_evictable_lru(l) {
                int file = is_file_lru(l);
-               int scan;
+               unsigned long scan;
 
                scan = zone_nr_pages(zone, sc, l);
                if (priority) {
index 0f11870116dc7bbce74d813928b19c36f847796c..3208a3a7e7fe5e3f9ad07a20a5bb9827d099d5ae 100755 (executable)
@@ -1411,7 +1411,8 @@ sub dump_struct($$) {
     my $file = shift;
     my $nested;
 
-    if ($x =~/(struct|union)\s+(\w+)\s*{(.*)}/) {
+    if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
+       #my $decl_type = $1;
        $declaration_name = $2;
        my $members = $3;
 
@@ -1420,8 +1421,8 @@ sub dump_struct($$) {
        $nested = $1;
 
        # ignore members marked private:
-       $members =~ s/\/\*.*?private:.*?public:.*?\*\///gos;
-       $members =~ s/\/\*.*?private:.*//gos;
+       $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
+       $members =~ s/\/\*\s*private:.*//gos;
        # strip comments:
        $members =~ s/\/\*.*?\*\///gos;
        $nested =~ s/\/\*.*?\*\///gos;