diff options
32 files changed, 331 insertions, 327 deletions
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c index da6c46d667c..8c242bb1ef4 100644 --- a/arch/i386/kernel/nmi.c +++ b/arch/i386/kernel/nmi.c @@ -195,7 +195,7 @@ static void disable_lapic_nmi_watchdog(void) wrmsr(MSR_P6_EVNTSEL0, 0, 0); break; case 15: - if (boot_cpu_data.x86_model > 0x3) + if (boot_cpu_data.x86_model > 0x4) break; wrmsr(MSR_P4_IQ_CCCR0, 0, 0); @@ -432,7 +432,7 @@ void setup_apic_nmi_watchdog (void) setup_p6_watchdog(); break; case 15: - if (boot_cpu_data.x86_model > 0x3) + if (boot_cpu_data.x86_model > 0x4) return; if (!setup_p4_watchdog()) diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c index 1bd430d0ca0..8faa8dc4de4 100644 --- a/arch/sparc/kernel/sparc_ksyms.c +++ b/arch/sparc/kernel/sparc_ksyms.c @@ -98,8 +98,9 @@ extern void ___rw_write_enter(void); * The module references will be fixed up by module_frob_arch_sections. */ #define DOT_ALIAS2(__ret, __x, __arg1, __arg2) \ - extern __ret __x(__arg1, __arg2) \ - __attribute__((weak, alias("." # __x))); + extern __ret __x(__arg1, __arg2); \ + asm(".weak " #__x);\ + asm(#__x "=." #__x); DOT_ALIAS2(int, div, int, int) DOT_ALIAS2(int, mul, int, int) diff --git a/arch/sparc64/kernel/Makefile b/arch/sparc64/kernel/Makefile index 093281bdf85..6f00ab8b9d2 100644 --- a/arch/sparc64/kernel/Makefile +++ b/arch/sparc64/kernel/Makefile @@ -8,7 +8,7 @@ EXTRA_CFLAGS := -Werror extra-y := head.o init_task.o vmlinux.lds obj-y := process.o setup.o cpu.o idprom.o \ - traps.o devices.o auxio.o \ + traps.o devices.o auxio.o una_asm.o \ irq.o ptrace.o time.o sys_sparc.o signal.o \ unaligned.o central.o pci.o starfire.o semaphore.o \ power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c index 100b0107c4b..0c9e54b2f0c 100644 --- a/arch/sparc64/kernel/traps.c +++ b/arch/sparc64/kernel/traps.c @@ -2127,6 +2127,9 @@ void __init trap_init(void) TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) || TI_NEW_CHILD != offsetof(struct thread_info, new_child) || TI_SYS_NOERROR != offsetof(struct thread_info, syscall_noerror) || + TI_RESTART_BLOCK != offsetof(struct thread_info, restart_block) || + TI_KUNA_REGS != offsetof(struct thread_info, kern_una_regs) || + TI_KUNA_INSN != offsetof(struct thread_info, kern_una_insn) || TI_FPREGS != offsetof(struct thread_info, fpregs) || (TI_FPREGS & (64 - 1))) thread_info_offsets_are_bolixed_dave(); diff --git a/arch/sparc64/kernel/una_asm.S b/arch/sparc64/kernel/una_asm.S new file mode 100644 index 00000000000..cbb40585253 --- /dev/null +++ b/arch/sparc64/kernel/una_asm.S @@ -0,0 +1,153 @@ +/* una_asm.S: Kernel unaligned trap assembler helpers. + * + * Copyright (C) 1996,2005 David S. Miller (davem@davemloft.net) + * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + */ + + .text + +kernel_unaligned_trap_fault: + call kernel_mna_trap_fault + nop + retl + nop + .size kern_unaligned_trap_fault, .-kern_unaligned_trap_fault + + .globl __do_int_store +__do_int_store: + rd %asi, %o4 + wr %o3, 0, %asi + ldx [%o2], %g3 + cmp %o1, 2 + be,pn %icc, 2f + cmp %o1, 4 + be,pt %icc, 1f + srlx %g3, 24, %g2 + srlx %g3, 56, %g1 + srlx %g3, 48, %g7 +4: stba %g1, [%o0] %asi + srlx %g3, 40, %g1 +5: stba %g7, [%o0 + 1] %asi + srlx %g3, 32, %g7 +6: stba %g1, [%o0 + 2] %asi +7: stba %g7, [%o0 + 3] %asi + srlx %g3, 16, %g1 +8: stba %g2, [%o0 + 4] %asi + srlx %g3, 8, %g7 +9: stba %g1, [%o0 + 5] %asi +10: stba %g7, [%o0 + 6] %asi + ba,pt %xcc, 0f +11: stba %g3, [%o0 + 7] %asi +1: srl %g3, 16, %g7 +12: stba %g2, [%o0] %asi + srl %g3, 8, %g2 +13: stba %g7, [%o0 + 1] %asi +14: stba %g2, [%o0 + 2] %asi + ba,pt %xcc, 0f +15: stba %g3, [%o0 + 3] %asi +2: srl %g3, 8, %g2 +16: stba %g2, [%o0] %asi +17: stba %g3, [%o0 + 1] %asi +0: + wr %o4, 0x0, %asi + retl + nop + .size __do_int_store, .-__do_int_store + + .section __ex_table + .word 4b, kernel_unaligned_trap_fault + .word 5b, kernel_unaligned_trap_fault + .word 6b, kernel_unaligned_trap_fault + .word 7b, kernel_unaligned_trap_fault + .word 8b, kernel_unaligned_trap_fault + .word 9b, kernel_unaligned_trap_fault + .word 10b, kernel_unaligned_trap_fault + .word 11b, kernel_unaligned_trap_fault + .word 12b, kernel_unaligned_trap_fault + .word 13b, kernel_unaligned_trap_fault + .word 14b, kernel_unaligned_trap_fault + .word 15b, kernel_unaligned_trap_fault + .word 16b, kernel_unaligned_trap_fault + .word 17b, kernel_unaligned_trap_fault + .previous + + .globl do_int_load +do_int_load: + rd %asi, %o5 + wr %o4, 0, %asi + cmp %o1, 8 + bge,pn %icc, 9f + cmp %o1, 4 + be,pt %icc, 6f +4: lduba [%o2] %asi, %g2 +5: lduba [%o2 + 1] %asi, %g3 + sll %g2, 8, %g2 + brz,pt %o3, 3f + add %g2, %g3, %g2 + sllx %g2, 48, %g2 + srax %g2, 48, %g2 +3: ba,pt %xcc, 0f + stx %g2, [%o0] +6: lduba [%o2 + 1] %asi, %g3 + sll %g2, 24, %g2 +7: lduba [%o2 + 2] %asi, %g7 + sll %g3, 16, %g3 +8: lduba [%o2 + 3] %asi, %g1 + sll %g7, 8, %g7 + or %g2, %g3, %g2 + or %g7, %g1, %g7 + or %g2, %g7, %g2 + brnz,a,pt %o3, 3f + sra %g2, 0, %g2 +3: ba,pt %xcc, 0f + stx %g2, [%o0] +9: lduba [%o2] %asi, %g2 +10: lduba [%o2 + 1] %asi, %g3 + sllx %g2, 56, %g2 +11: lduba [%o2 + 2] %asi, %g7 + sllx %g3, 48, %g3 +12: lduba [%o2 + 3] %asi, %g1 + sllx %g7, 40, %g7 + sllx %g1, 32, %g1 + or %g2, %g3, %g2 + or %g7, %g1, %g7 +13: lduba [%o2 + 4] %asi, %g3 + or %g2, %g7, %g7 +14: lduba [%o2 + 5] %asi, %g1 + sllx %g3, 24, %g3 +15: lduba [%o2 + 6] %asi, %g2 + sllx %g1, 16, %g1 + or %g7, %g3, %g7 +16: lduba [%o2 + 7] %asi, %g3 + sllx %g2, 8, %g2 + or %g7, %g1, %g7 + or %g2, %g3, %g2 + or %g7, %g2, %g7 + cmp %o1, 8 + be,a,pt %icc, 0f + stx %g7, [%o0] + srlx %g7, 32, %g2 + sra %g7, 0, %g7 + stx %g2, [%o0] + stx %g7, [%o0 + 8] +0: + wr %o5, 0x0, %asi + retl + nop + .size __do_int_load, .-__do_int_load + + .section __ex_table + .word 4b, kernel_unaligned_trap_fault + .word 5b, kernel_unaligned_trap_fault + .word 6b, kernel_unaligned_trap_fault + .word 7b, kernel_unaligned_trap_fault + .word 8b, kernel_unaligned_trap_fault + .word 9b, kernel_unaligned_trap_fault + .word 10b, kernel_unaligned_trap_fault + .word 11b, kernel_unaligned_trap_fault + .word 12b, kernel_unaligned_trap_fault + .word 13b, kernel_unaligned_trap_fault + .word 14b, kernel_unaligned_trap_fault + .word 15b, kernel_unaligned_trap_fault + .word 16b, kernel_unaligned_trap_fault + .previous diff --git a/arch/sparc64/kernel/unaligned.c b/arch/sparc64/kernel/unaligned.c index 4372bf32ecf..11c3e88732e 100644 --- a/arch/sparc64/kernel/unaligned.c +++ b/arch/sparc64/kernel/unaligned.c @@ -180,169 +180,28 @@ static void __attribute_used__ unaligned_panic(char *str, struct pt_regs *regs) die_if_kernel(str, regs); } -#define do_integer_load(dest_reg, size, saddr, is_signed, asi, errh) ({ \ -__asm__ __volatile__ ( \ - "wr %4, 0, %%asi\n\t" \ - "cmp %1, 8\n\t" \ - "bge,pn %%icc, 9f\n\t" \ - " cmp %1, 4\n\t" \ - "be,pt %%icc, 6f\n" \ -"4:\t" " lduba [%2] %%asi, %%l1\n" \ -"5:\t" "lduba [%2 + 1] %%asi, %%l2\n\t" \ - "sll %%l1, 8, %%l1\n\t" \ - "brz,pt %3, 3f\n\t" \ - " add %%l1, %%l2, %%l1\n\t" \ - "sllx %%l1, 48, %%l1\n\t" \ - "srax %%l1, 48, %%l1\n" \ -"3:\t" "ba,pt %%xcc, 0f\n\t" \ - " stx %%l1, [%0]\n" \ -"6:\t" "lduba [%2 + 1] %%asi, %%l2\n\t" \ - "sll %%l1, 24, %%l1\n" \ -"7:\t" "lduba [%2 + 2] %%asi, %%g7\n\t" \ - "sll %%l2, 16, %%l2\n" \ -"8:\t" "lduba [%2 + 3] %%asi, %%g1\n\t" \ - "sll %%g7, 8, %%g7\n\t" \ - "or %%l1, %%l2, %%l1\n\t" \ - "or %%g7, %%g1, %%g7\n\t" \ - "or %%l1, %%g7, %%l1\n\t" \ - "brnz,a,pt %3, 3f\n\t" \ - " sra %%l1, 0, %%l1\n" \ -"3:\t" "ba,pt %%xcc, 0f\n\t" \ - " stx %%l1, [%0]\n" \ -"9:\t" "lduba [%2] %%asi, %%l1\n" \ -"10:\t" "lduba [%2 + 1] %%asi, %%l2\n\t" \ - "sllx %%l1, 56, %%l1\n" \ -"11:\t" "lduba [%2 + 2] %%asi, %%g7\n\t" \ - "sllx %%l2, 48, %%l2\n" \ -"12:\t" "lduba [%2 + 3] %%asi, %%g1\n\t" \ - "sllx %%g7, 40, %%g7\n\t" \ - "sllx %%g1, 32, %%g1\n\t" \ - "or %%l1, %%l2, %%l1\n\t" \ - "or %%g7, %%g1, %%g7\n" \ -"13:\t" "lduba [%2 + 4] %%asi, %%l2\n\t" \ - "or %%l1, %%g7, %%g7\n" \ -"14:\t" "lduba [%2 + 5] %%asi, %%g1\n\t" \ - "sllx %%l2, 24, %%l2\n" \ -"15:\t" "lduba [%2 + 6] %%asi, %%l1\n\t" \ - "sllx %%g1, 16, %%g1\n\t" \ - "or %%g7, %%l2, %%g7\n" \ -"16:\t" "lduba [%2 + 7] %%asi, %%l2\n\t" \ - "sllx %%l1, 8, %%l1\n\t" \ - "or %%g7, %%g1, %%g7\n\t" \ - "or %%l1, %%l2, %%l1\n\t" \ - "or %%g7, %%l1, %%g7\n\t" \ - "cmp %1, 8\n\t" \ - "be,a,pt %%icc, 0f\n\t" \ - " stx %%g7, [%0]\n\t" \ - "srlx %%g7, 32, %%l1\n\t" \ - "sra %%g7, 0, %%g7\n\t" \ - "stx %%l1, [%0]\n\t" \ - "stx %%g7, [%0 + 8]\n" \ -"0:\n\t" \ - "wr %%g0, %5, %%asi\n\n\t" \ - ".section __ex_table\n\t" \ - ".word 4b, " #errh "\n\t" \ - ".word 5b, " #errh "\n\t" \ - ".word 6b, " #errh "\n\t" \ - ".word 7b, " #errh "\n\t" \ - ".word 8b, " #errh "\n\t" \ - ".word 9b, " #errh "\n\t" \ - ".word 10b, " #errh "\n\t" \ - ".word 11b, " #errh "\n\t" \ - ".word 12b, " #errh "\n\t" \ - ".word 13b, " #errh "\n\t" \ - ".word 14b, " #errh "\n\t" \ - ".word 15b, " #errh "\n\t" \ - ".word 16b, " #errh "\n\n\t" \ - ".previous\n\t" \ - : : "r" (dest_reg), "r" (size), "r" (saddr), "r" (is_signed), \ - "r" (asi), "i" (ASI_AIUS) \ - : "l1", "l2", "g7", "g1", "cc"); \ -}) +extern void do_int_load(unsigned long *dest_reg, int size, + unsigned long *saddr, int is_signed, int asi); -#define store_common(dst_addr, size, src_val, asi, errh) ({ \ -__asm__ __volatile__ ( \ - "wr %3, 0, %%asi\n\t" \ - "ldx [%2], %%l1\n" \ - "cmp %1, 2\n\t" \ - "be,pn %%icc, 2f\n\t" \ - " cmp %1, 4\n\t" \ - "be,pt %%icc, 1f\n\t" \ - " srlx %%l1, 24, %%l2\n\t" \ - "srlx %%l1, 56, %%g1\n\t" \ - "srlx %%l1, 48, %%g7\n" \ -"4:\t" "stba %%g1, [%0] %%asi\n\t" \ - "srlx %%l1, 40, %%g1\n" \ -"5:\t" "stba %%g7, [%0 + 1] %%asi\n\t" \ - "srlx %%l1, 32, %%g7\n" \ -"6:\t" "stba %%g1, [%0 + 2] %%asi\n" \ -"7:\t" "stba %%g7, [%0 + 3] %%asi\n\t" \ - "srlx %%l1, 16, %%g1\n" \ -"8:\t" "stba %%l2, [%0 + 4] %%asi\n\t" \ - "srlx %%l1, 8, %%g7\n" \ -"9:\t" "stba %%g1, [%0 + 5] %%asi\n" \ -"10:\t" "stba %%g7, [%0 + 6] %%asi\n\t" \ - "ba,pt %%xcc, 0f\n" \ -"11:\t" " stba %%l1, [%0 + 7] %%asi\n" \ -"1:\t" "srl %%l1, 16, %%g7\n" \ -"12:\t" "stba %%l2, [%0] %%asi\n\t" \ - "srl %%l1, 8, %%l2\n" \ -"13:\t" "stba %%g7, [%0 + 1] %%asi\n" \ -"14:\t" "stba %%l2, [%0 + 2] %%asi\n\t" \ - "ba,pt %%xcc, 0f\n" \ -"15:\t" " stba %%l1, [%0 + 3] %%asi\n" \ -"2:\t" "srl %%l1, 8, %%l2\n" \ -"16:\t" "stba %%l2, [%0] %%asi\n" \ -"17:\t" "stba %%l1, [%0 + 1] %%asi\n" \ -"0:\n\t" \ - "wr %%g0, %4, %%asi\n\n\t" \ - ".section __ex_table\n\t" \ - ".word 4b, " #errh "\n\t" \ - ".word 5b, " #errh "\n\t" \ - ".word 6b, " #errh "\n\t" \ - ".word 7b, " #errh "\n\t" \ - ".word 8b, " #errh "\n\t" \ - ".word 9b, " #errh "\n\t" \ - ".word 10b, " #errh "\n\t" \ - ".word 11b, " #errh "\n\t" \ - ".word 12b, " #errh "\n\t" \ - ".word 13b, " #errh "\n\t" \ - ".word 14b, " #errh "\n\t" \ - ".word 15b, " #errh "\n\t" \ - ".word 16b, " #errh "\n\t" \ - ".word 17b, " #errh "\n\n\t" \ - ".previous\n\t" \ - : : "r" (dst_addr), "r" (size), "r" (src_val), "r" (asi), "i" (ASI_AIUS)\ - : "l1", "l2", "g7", "g1", "cc"); \ -}) - -#define do_integer_store(reg_num, size, dst_addr, regs, asi, errh) ({ \ - unsigned long zero = 0; \ - unsigned long *src_val = &zero; \ - \ - if (size == 16) { \ - size = 8; \ - zero = (((long)(reg_num ? \ - (unsigned)fetch_reg(reg_num, regs) : 0)) << 32) | \ - (unsigned)fetch_reg(reg_num + 1, regs); \ - } else if (reg_num) src_val = fetch_reg_addr(reg_num, regs); \ - store_common(dst_addr, size, src_val, asi, errh); \ -}) - -extern void smp_capture(void); -extern void smp_release(void); - -#define do_atomic(srcdest_reg, mem, errh) ({ \ - unsigned long flags, tmp; \ - \ - smp_capture(); \ - local_irq_save(flags); \ - tmp = *srcdest_reg; \ - do_integer_load(srcdest_reg, 4, mem, 0, errh); \ - store_common(mem, 4, &tmp, errh); \ - local_irq_restore(flags); \ - smp_release(); \ -}) +extern void __do_int_store(unsigned long *dst_addr, int size, + unsigned long *src_val, int asi); + +static inline void do_int_store(int reg_num, int size, unsigned long *dst_addr, + struct pt_regs *regs, int asi) +{ + unsigned long zero = 0; + unsigned long *src_val = &zero; + + if (size == 16) { + size = 8; + zero = (((long)(reg_num ? + (unsigned)fetch_reg(reg_num, regs) : 0)) << 32) | + (unsigned)fetch_reg(reg_num + 1, regs); + } else if (reg_num) { + src_val = fetch_reg_addr(reg_num, regs); + } + __do_int_store(dst_addr, size, src_val, asi); +} static inline void advance(struct pt_regs *regs) { @@ -364,24 +223,29 @@ static inline int ok_for_kernel(unsigned int insn) return !floating_point_load_or_store_p(insn); } -void kernel_mna_trap_fault(struct pt_regs *regs, unsigned int insn) __asm__ ("kernel_mna_trap_fault"); - -void kernel_mna_trap_fault(struct pt_regs *regs, unsigned int insn) +void kernel_mna_trap_fault(void) { - unsigned long g2 = regs->u_regs [UREG_G2]; + struct pt_regs *regs = current_thread_info()->kern_una_regs; + unsigned int insn = current_thread_info()->kern_una_insn; + unsigned long g2 = regs->u_regs[UREG_G2]; unsigned long fixup = search_extables_range(regs->tpc, &g2); if (!fixup) { - unsigned long address = compute_effective_address(regs, insn, ((insn >> 25) & 0x1f)); + unsigned long address; + + address = compute_effective_address(regs, insn, + ((insn >> 25) & 0x1f)); if (address < PAGE_SIZE) { - printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference in mna handler"); + printk(KERN_ALERT "Unable to handle kernel NULL " + "pointer dereference in mna handler"); } else - printk(KERN_ALERT "Unable to handle kernel paging request in mna handler"); + printk(KERN_ALERT "Unable to handle kernel paging " + "request in mna handler"); printk(KERN_ALERT " at virtual address %016lx\n",address); - printk(KERN_ALERT "current->{mm,active_mm}->context = %016lx\n", + printk(KERN_ALERT "current->{active_,}mm->context = %016lx\n", (current->mm ? CTX_HWBITS(current->mm->context) : CTX_HWBITS(current->active_mm->context))); - printk(KERN_ALERT "current->{mm,active_mm}->pgd = %016lx\n", + printk(KERN_ALERT "current->{active_,}mm->pgd = %016lx\n", (current->mm ? (unsigned long) current->mm->pgd : (unsigned long) current->active_mm->pgd)); die_if_kernel("Oops", regs); @@ -400,48 +264,41 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn, u enum direction dir = decode_direction(insn); int size = decode_access_size(insn); + current_thread_info()->kern_una_regs = regs; + current_thread_info()->kern_una_insn = insn; + if (!ok_for_kernel(insn) || dir == both) { - printk("Unsupported unaligned load/store trap for kernel at <%016lx>.\n", - regs->tpc); - unaligned_panic("Kernel does fpu/atomic unaligned load/store.", regs); - - __asm__ __volatile__ ("\n" -"kernel_unaligned_trap_fault:\n\t" - "mov %0, %%o0\n\t" - "call kernel_mna_trap_fault\n\t" - " mov %1, %%o1\n\t" - : - : "r" (regs), "r" (insn) - : "o0", "o1", "o2", "o3", "o4", "o5", "o7", - "g1", "g2", "g3", "g4", "g7", "cc"); + printk("Unsupported unaligned load/store trap for kernel " + "at <%016lx>.\n", regs->tpc); + unaligned_panic("Kernel does fpu/atomic " + "unaligned load/store.", regs); + + kernel_mna_trap_fault(); } else { - unsigned long addr = compute_effective_address(regs, insn, ((insn >> 25) & 0x1f)); + unsigned long addr; + addr = compute_effective_address(regs, insn, + ((insn >> 25) & 0x1f)); #ifdef DEBUG_MNA - printk("KMNA: pc=%016lx [dir=%s addr=%016lx size=%d] retpc[%016lx]\n", - regs->tpc, dirstrings[dir], addr, size, regs->u_regs[UREG_RETPC]); + printk("KMNA: pc=%016lx [dir=%s addr=%016lx size=%d] " + "retpc[%016lx]\n", + regs->tpc, dirstrings[dir], addr, size, + regs->u_regs[UREG_RETPC]); #endif switch (dir) { case load: - do_integer_load(fetch_reg_addr(((insn>>25)&0x1f), regs), - size, (unsigned long *) addr, - decode_signedness(insn), decode_asi(insn, regs), - kernel_unaligned_trap_fault); + do_int_load(fetch_reg_addr(((insn>>25)&0x1f), regs), + size, (unsigned long *) addr, + decode_signedness(insn), + decode_asi(insn, regs)); break; case store: - do_integer_store(((insn>>25)&0x1f), size, - (unsigned long *) addr, regs, - decode_asi(insn, regs), - kernel_unaligned_trap_fault); - break; -#if 0 /* unsupported */ - case both: - do_atomic(fetch_reg_addr(((insn>>25)&0x1f), regs), - (unsigned long *) addr, - kernel_unaligned_trap_fault); + do_int_store(((insn>>25)&0x1f), size, + (unsigned long *) addr, regs, + decode_asi(insn, regs)); break; -#endif + default: panic("Impossible kernel unaligned trap."); /* Not reached... */ diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index bfc28abe1cb..31ee06590de 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -30,7 +30,7 @@ static struct dentry *afs_mntpt_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd); static int afs_mntpt_open(struct inode *inode, struct file *file); -static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd); +static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd); struct file_operations afs_mntpt_file_operations = { .open = afs_mntpt_open, @@ -233,7 +233,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt) /* * follow a link from a mountpoint directory, thus causing it to be mounted */ -static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd) { struct vfsmount *newmnt; struct dentry *old_dentry; @@ -249,7 +249,7 @@ static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd) newmnt = afs_mntpt_do_automount(dentry); if (IS_ERR(newmnt)) { path_release(nd); - return PTR_ERR(newmnt); + return (void *)newmnt; } old_dentry = nd->dentry; @@ -267,7 +267,7 @@ static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd) } kleave(" = %d", err); - return err; + return ERR_PTR(err); } /* end afs_mntpt_follow_link() */ /*****************************************************************************/ diff --git a/fs/autofs/symlink.c b/fs/autofs/symlink.c index f028396f138..52e8772b066 100644 --- a/fs/autofs/symlink.c +++ b/fs/autofs/symlink.c @@ -12,11 +12,12 @@ #include "autofs_i.h" -static int autofs_follow_link(struct dentry *dentry, struct nameidata *nd) +/* Nothing to release.. */ +static void *autofs_follow_link(struct dentry *dentry, struct nameidata *nd) { char *s=((struct autofs_symlink *)dentry->d_inode->u.generic_ip)->data; nd_set_link(nd, s); - return 0; + return NULL; } struct inode_operations autofs_symlink_inode_operations = { diff --git a/fs/autofs4/symlink.c b/fs/autofs4/symlink.c index c265a66edf0..2ea2c98fd84 100644 --- a/fs/autofs4/symlink.c +++ b/fs/autofs4/symlink.c @@ -12,11 +12,11 @@ #include "autofs_i.h" -static int autofs4_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd) { struct autofs_info *ino = autofs4_dentry_ino(dentry); nd_set_link(nd, (char *)ino->u.symlink); - return 0; + return NULL; } struct inode_operations autofs4_symlink_inode_operations = { diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index de5bb280a82..abf950e5b64 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -41,8 +41,8 @@ static struct inode *befs_alloc_inode(struct super_block *sb); static void befs_destroy_inode(struct inode *inode); static int befs_init_inodecache(void); static void befs_destroy_inodecache(void); -static int befs_follow_link(struct dentry *, struct nameidata *); -static void befs_put_link(struct dentry *, struct nameidata *); +static void *befs_follow_link(struct dentry *, struct nameidata *); +static void befs_put_link(struct dentry *, struct nameidata *, void *); static int befs_utf2nls(struct super_block *sb, const char *in, int in_len, char **out, int *out_len); static int befs_nls2utf(struct super_block *sb, const char *in, int in_len, @@ -487,10 +487,10 @@ befs_follow_link(struct dentry *dentry, struct nameidata *nd) } nd_set_link(nd, link); - return 0; + return NULL; } -static void befs_put_link(struct dentry *dentry, struct nameidata *nd) +static void befs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) { befs_inode_info *befs_ino = BEFS_I(dentry->d_inode); if (befs_ino->i_flags & BEFS_LONG_SYMLINK) { diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index 78af5850c55..1fd21f66f24 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -83,8 +83,8 @@ extern int cifs_dir_notify(struct file *, unsigned long arg); extern struct dentry_operations cifs_dentry_ops; /* Functions related to symlinks */ -extern int cifs_follow_link(struct dentry *direntry, struct nameidata *nd); -extern void cifs_put_link(struct dentry *direntry, struct nameidata *nd); +extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd); +extern void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *); extern int cifs_readlink(struct dentry *direntry, char __user *buffer, int buflen); extern int cifs_symlink(struct inode *inode, struct dentry *direntry, diff --git a/fs/cifs/link.c b/fs/cifs/link.c index bde0fabfece..ab925ef4f86 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -92,7 +92,7 @@ cifs_hl_exit: return rc; } -int +void * cifs_follow_link(struct dentry *direntry, struct nameidata *nd) { struct inode *inode = direntry->d_inode; @@ -148,7 +148,7 @@ out: out_no_free: FreeXid(xid); nd_set_link(nd, target_path); - return 0; + return NULL; /* No cookie */ } int @@ -330,7 +330,7 @@ cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen) return rc; } -void cifs_put_link(struct dentry *direntry, struct nameidata *nd) +void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *cookie) { char *p = nd_get_link(nd); if (!IS_ERR(p)) diff --git a/fs/devfs/base.c b/fs/devfs/base.c index 1ecfe1f184d..8b679b67e5e 100644 --- a/fs/devfs/base.c +++ b/fs/devfs/base.c @@ -2491,11 +2491,11 @@ static int devfs_mknod(struct inode *dir, struct dentry *dentry, int mode, return 0; } /* End Function devfs_mknod */ -static int devfs_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *devfs_follow_link(struct dentry *dentry, struct nameidata *nd) { struct devfs_entry *p = get_devfs_entry_from_vfs_inode(dentry->d_inode); nd_set_link(nd, p ? p->u.symlink.linkname : ERR_PTR(-ENODEV)); - return 0; + return NULL; } /* End Function devfs_follow_link */ static struct inode_operations devfs_iops = { diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c index 9f7bac01d55..1e67d87cfa9 100644 --- a/fs/ext2/symlink.c +++ b/fs/ext2/symlink.c @@ -21,11 +21,11 @@ #include "xattr.h" #include <linux/namei.h> -static int ext2_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *ext2_follow_link(struct dentry *dentry, struct nameidata *nd) { struct ext2_inode_info *ei = EXT2_I(dentry->d_inode); nd_set_link(nd, (char *)ei->i_data); - return 0; + return NULL; } struct inode_operations ext2_symlink_inode_operations = { diff --git a/fs/ext3/symlink.c b/fs/ext3/symlink.c index 8c3e72818fb..4f79122cde6 100644 --- a/fs/ext3/symlink.c +++ b/fs/ext3/symlink.c @@ -23,11 +23,11 @@ #include <linux/namei.h> #include "xattr.h" -static int ext3_follow_link(struct dentry *dentry, struct nameidata *nd) +static void * ext3_follow_link(struct dentry *dentry, struct nameidata *nd) { struct ext3_inode_info *ei = EXT3_I(dentry->d_inode); nd_set_link(nd, (char*)ei->i_data); - return 0; + return NULL; } struct inode_operations ext3_symlink_inode_operations = { diff --git a/fs/freevxfs/vxfs_immed.c b/fs/freevxfs/vxfs_immed.c index ac677ab262b..b20c3efa364 100644 --- a/fs/freevxfs/vxfs_immed.c +++ b/fs/freevxfs/vxfs_immed.c @@ -38,7 +38,7 @@ #include "vxfs_inode.h" -static int vxfs_immed_follow_link(struct dentry *, struct nameidata *); +static void * vxfs_immed_follow_link(struct dentry *, struct nameidata *); static int vxfs_immed_readpage(struct file *, struct page *); @@ -77,7 +77,7 @@ vxfs_immed_follow_link(struct dentry *dp, struct nameidata *np) { struct vxfs_inode_info *vip = VXFS_INO(dp->d_inode); nd_set_link(np, vip->vii_immed.vi_immed); - return 0; + return NULL; } /** diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c index 65ab6b001dc..82ef484f5e1 100644 --- a/fs/jffs2/symlink.c +++ b/fs/jffs2/symlink.c @@ -18,7 +18,7 @@ #include <linux/namei.h> #include "nodelist.h" -static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd); +static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd); struct inode_operations jffs2_symlink_inode_operations = { @@ -27,9 +27,10 @@ struct inode_operations jffs2_symlink_inode_operations = .setattr = jffs2_setattr }; -static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd) { struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode); + char *p = (char *)f->dents; /* * We don't acquire the f->sem mutex here since the only data we @@ -45,19 +46,20 @@ static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd) * nd_set_link() call. */ - if (!f->dents) { + if (!p) { printk(KERN_ERR "jffs2_follow_link(): can't find symlink taerget\n"); - return -EIO; + p = ERR_PTR(-EIO); + } else { + D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents)); } - D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents)); - nd_set_link(nd, (char *)f->dents); + nd_set_link(nd, p); /* * We unlock the f->sem mutex but VFS will use the f->dents string. This is safe * since the only way that may cause f->dents to be changed is iput() operation. * But VFS will not use f->dents after iput() has been called. */ - return 0; + return NULL; } diff --git a/fs/jfs/symlink.c b/fs/jfs/symlink.c index 287d8d6c3cf..16477b3835e 100644 --- a/fs/jfs/symlink.c +++ b/fs/jfs/symlink.c @@ -22,11 +22,11 @@ #include "jfs_inode.h" #include "jfs_xattr.h" -static int jfs_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *jfs_follow_link(struct dentry *dentry, struct nameidata *nd) { char *s = JFS_IP(dentry->d_inode)->i_inline; nd_set_link(nd, s); - return 0; + return NULL; } struct inode_operations jfs_symlink_inode_operations = { diff --git a/fs/namei.c b/fs/namei.c index b85f158aef0..6ec1f0fefc5 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -501,6 +501,7 @@ struct path { static inline int __do_follow_link(struct path *path, struct nameidata *nd) { int error; + void *cookie; struct dentry *dentry = path->dentry; touch_atime(path->mnt, dentry); @@ -508,13 +509,15 @@ static inline int __do_follow_link(struct path *path, struct nameidata *nd) if (path->mnt == nd->mnt) mntget(path->mnt); - error = dentry->d_inode->i_op->follow_link(dentry, nd); - if (!error) { + cookie = dentry->d_inode->i_op->follow_link(dentry, nd); + error = PTR_ERR(cookie); + if (!IS_ERR(cookie)) { char *s = nd_get_link(nd); + error = 0; if (s) error = __vfs_follow_link(nd, s); if (dentry->d_inode->i_op->put_link) - dentry->d_inode->i_op->put_link(dentry, nd); + dentry->d_inode->i_op->put_link(dentry, nd, cookie); } dput(dentry); mntput(path->mnt); @@ -2344,15 +2347,17 @@ out: int generic_readlink(struct dentry *dentry, char __user *buffer, int buflen) { struct nameidata nd; - int res; + void *cookie; + nd.depth = 0; - res = dentry->d_inode->i_op->follow_link(dentry, &nd); - if (!res) { - res = vfs_readlink(dentry, buffer, buflen, nd_get_link(&nd)); + cookie = dentry->d_inode->i_op->follow_link(dentry, &nd); + if (!IS_ERR(cookie)) { + int res = vfs_readlink(dentry, buffer, buflen, nd_get_link(&nd)); if (dentry->d_inode->i_op->put_link) - dentry->d_inode->i_op->put_link(dentry, &nd); + dentry->d_inode->i_op->put_link(dentry, &nd, cookie); + cookie = ERR_PTR(res); } - return res; + return PTR_ERR(cookie); } int vfs_follow_link(struct nameidata *nd, const char *link) @@ -2395,23 +2400,20 @@ int page_readlink(struct dentry *dentry, char __user *buffer, int buflen) return res; } -int page_follow_link_light(struct dentry *dentry, struct nameidata *nd) +void *page_follow_link_light(struct dentry *dentry, struct nameidata *nd) { - struct page *page; + struct page *page = NULL; nd_set_link(nd, page_getlink(dentry, &page)); - return 0; + return page; } -void page_put_link(struct dentry *dentry, struct nameidata *nd) +void page_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie) { - if (!IS_ERR(nd_get_link(nd))) { - struct page *page; - page = find_get_page(dentry->d_inode->i_mapping, 0); - if (!page) - BUG(); + struct page *page = cookie; + + if (page) { kunmap(page); page_cache_release(page); - page_cache_release(page); } } diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 147cbf9261c..2df639f143e 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -939,6 +939,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry error = nfs_revalidate_inode(NFS_SERVER(dir), dir); if (error < 0) { res = ERR_PTR(error); + unlock_kernel(); goto out; } diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c index 35f10659914..18dc95b0b64 100644 --- a/fs/nfs/symlink.c +++ b/fs/nfs/symlink.c @@ -27,26 +27,14 @@ /* Symlink caching in the page cache is even more simplistic * and straight-forward than readdir caching. - * - * At the beginning of the page we store pointer to struct page in question, - * simplifying nfs_put_link() (if inode got invalidated we can't find the page - * to be freed via pagecache lookup). - * The NUL-terminated string follows immediately thereafter. */ -struct nfs_symlink { - struct page *page; - char body[0]; -}; - static int nfs_symlink_filler(struct inode *inode, struct page *page) { - const unsigned int pgbase = offsetof(struct nfs_symlink, body); - const unsigned int pglen = PAGE_SIZE - pgbase; int error; lock_kernel(); - error = NFS_PROTO(inode)->readlink(inode, page, pgbase, pglen); + error = NFS_PROTO(inode)->readlink(inode, page, 0, PAGE_SIZE); unlock_kernel(); if (error < 0) goto error; @@ -60,11 +48,10 @@ error: return -EIO; } -static int nfs_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *nfs_follow_link(struct dentry *dentry, struct nameidata *nd) { struct inode *inode = dentry->d_inode; struct page *page; - struct nfs_symlink *p; void *err = ERR_PTR(nfs_revalidate_inode(NFS_SERVER(inode), inode)); if (err) goto read_failed; @@ -78,28 +65,20 @@ static int nfs_follow_link(struct dentry *dentry, struct nameidata *nd) err = ERR_PTR(-EIO); goto getlink_read_error; } - p = kmap(page); - p->page = page; - nd_set_link(nd, p->body); - return 0; + nd_set_link(nd, kmap(page)); + return page; getlink_read_error: page_cache_release(page); read_failed: nd_set_link(nd, err); - return 0; + return NULL; } -static void nfs_put_link(struct dentry *dentry, struct nameidata *nd) +static void nfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie) { - char *s = nd_get_link(nd); - if (!IS_ERR(s)) { - struct nfs_symlink *p; - struct page *page; - - p = container_of(s, struct nfs_symlink, body[0]); - page = p->page; - + if (cookie) { + struct page *page = cookie; kunmap(page); page_cache_release(page); } diff --git a/fs/proc/base.c b/fs/proc/base.c index ace151fa487..491f2d9f89a 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -890,7 +890,7 @@ static struct file_operations proc_seccomp_operations = { }; #endif /* CONFIG_SECCOMP */ -static int proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd) { struct inode *inode = dentry->d_inode; int error = -EACCES; @@ -907,7 +907,7 @@ static int proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd) error = PROC_I(inode)->op.proc_get_link(inode, &nd->dentry, &nd->mnt); nd->last_type = LAST_BIND; out: - return error; + return ERR_PTR(error); } static int do_proc_readlink(struct dentry *dentry, struct vfsmount *mnt, @@ -1692,11 +1692,11 @@ static int proc_self_readlink(struct dentry *dentry, char __user *buffer, return vfs_readlink(dentry,buffer,buflen,tmp); } -static int proc_self_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd) { char tmp[30]; sprintf(tmp, "%d", current->tgid); - return vfs_follow_link(nd,tmp); + return ERR_PTR(vfs_follow_link(nd,tmp)); } static struct inode_operations proc_self_inode_operations = { diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 6c6315d0402..abe8920313f 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -329,10 +329,10 @@ static void release_inode_number(unsigned int inum) spin_unlock(&proc_inum_lock); } -static int proc_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *proc_follow_link(struct dentry *dentry, struct nameidata *nd) { nd_set_link(nd, PDE(dentry->d_inode)->data); - return 0; + return NULL; } static struct inode_operations proc_link_inode_operations = { diff --git a/fs/smbfs/symlink.c b/fs/smbfs/symlink.c index 8b069e06433..0c64bc3a012 100644 --- a/fs/smbfs/symlink.c +++ b/fs/smbfs/symlink.c @@ -34,7 +34,7 @@ int smb_symlink(struct inode *inode, struct dentry *dentry, const char *oldname) return smb_proc_symlink(server_from_dentry(dentry), dentry, oldname); } -static int smb_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *smb_follow_link(struct dentry *dentry, struct nameidata *nd) { char *link = __getname(); DEBUG1("followlink of %s/%s\n", DENTRY_PATH(dentry)); @@ -52,10 +52,10 @@ static int smb_follow_link(struct dentry *dentry, struct nameidata *nd) } } nd_set_link(nd, link); - return 0; + return NULL; } -static void smb_put_link(struct dentry *dentry, struct nameidata *nd) +static void smb_put_link(struct dentry *dentry, struct nameidata *nd, void *p) { char *s = nd_get_link(nd); if (!IS_ERR(s)) diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c index fae57c83a72..de402fa915f 100644 --- a/fs/sysfs/symlink.c +++ b/fs/sysfs/symlink.c @@ -151,17 +151,17 @@ static int sysfs_getlink(struct dentry *dentry, char * path) } -static int sysfs_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *sysfs_follow_link(struct dentry *dentry, struct nameidata *nd) { int error = -ENOMEM; unsigned long page = get_zeroed_page(GFP_KERNEL); if (page) error = sysfs_getlink(dentry, (char *) page); nd_set_link(nd, error ? ERR_PTR(error) : (char *)page); - return 0; + return NULL; } -static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd) +static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie) { char *page = nd_get_link(nd); if (!IS_ERR(page)) diff --git a/fs/sysv/symlink.c b/fs/sysv/symlink.c index ed637db2dcb..b85ce61d635 100644 --- a/fs/sysv/symlink.c +++ b/fs/sysv/symlink.c @@ -8,10 +8,10 @@ #include "sysv.h" #include <linux/namei.h> -static int sysv_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *sysv_follow_link(struct dentry *dentry, struct nameidata *nd) { nd_set_link(nd, (char *)SYSV_I(dentry->d_inode)->i_data); - return 0; + return NULL; } struct inode_operations sysv_fast_symlink_inode_operations = { diff --git a/fs/ufs/symlink.c b/fs/ufs/symlink.c index a0e49149098..337512ed578 100644 --- a/fs/ufs/symlink.c +++ b/fs/ufs/symlink.c @@ -29,11 +29,11 @@ #include <linux/namei.h> #include <linux/ufs_fs.h> -static int ufs_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *ufs_follow_link(struct dentry *dentry, struct nameidata *nd) { struct ufs_inode_info *p = UFS_I(dentry->d_inode); nd_set_link(nd, (char*)p->i_u1.i_symlink); - return 0; + return NULL; } struct inode_operations ufs_fast_symlink_inode_operations = { diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 407e9935939..f252605514e 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -374,7 +374,7 @@ linvfs_rename( * we need to be very careful about how much stack we use. * uio is kmalloced for this reason... */ -STATIC int +STATIC void * linvfs_follow_link( struct dentry *dentry, struct nameidata *nd) @@ -391,14 +391,14 @@ linvfs_follow_link( link = (char *)kmalloc(MAXNAMELEN+1, GFP_KERNEL); if (!link) { nd_set_link(nd, ERR_PTR(-ENOMEM)); - return 0; + return NULL; } uio = (uio_t *)kmalloc(sizeof(uio_t), GFP_KERNEL); if (!uio) { kfree(link); nd_set_link(nd, ERR_PTR(-ENOMEM)); - return 0; + return NULL; } vp = LINVFS_GET_VP(dentry->d_inode); @@ -422,10 +422,10 @@ linvfs_follow_link( kfree(uio); nd_set_link(nd, link); - return 0; + return NULL; } -static void linvfs_put_link(struct dentry *dentry, struct nameidata *nd) +static void linvfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) { char *s = nd_get_link(nd); if (!IS_ERR(s)) diff --git a/include/asm-sparc64/thread_info.h b/include/asm-sparc64/thread_info.h index 352d9943661..c94d8b3991b 100644 --- a/include/asm-sparc64/thread_info.h +++ b/include/asm-sparc64/thread_info.h @@ -68,6 +68,9 @@ struct thread_info { struct restart_block restart_block; + struct pt_regs *kern_una_regs; + unsigned int kern_una_insn; + unsigned long fpregs[0] __attribute__ ((aligned(64))); }; @@ -103,6 +106,8 @@ struct thread_info { #define TI_PCR 0x00000490 #define TI_CEE_STUFF 0x00000498 #define TI_RESTART_BLOCK 0x000004a0 +#define TI_KUNA_REGS 0x000004c8 +#define TI_KUNA_INSN 0x000004d0 #define TI_FPREGS 0x00000500 /* We embed this in the uppermost byte of thread_info->flags */ diff --git a/include/linux/fs.h b/include/linux/fs.h index f9adf75fd9b..67e6732d4fd 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -993,8 +993,8 @@ struct inode_operations { int (*rename) (struct inode *, struct dentry *, struct inode *, struct dentry *); int (*readlink) (struct dentry *, char __user *,int); - int (*follow_link) (struct dentry *, struct nameidata *); - void (*put_link) (struct dentry *, struct nameidata *); + void * (*follow_link) (struct dentry *, struct nameidata *); + void (*put_link) (struct dentry *, struct nameidata *, void *); void (*truncate) (struct inode *); int (*permission) (struct inode *, int, struct nameidata *); int (*setattr) (struct dentry *, struct iattr *); @@ -1602,8 +1602,8 @@ extern struct file_operations generic_ro_fops; extern int vfs_readlink(struct dentry *, char __user *, int, const char *); extern int vfs_follow_link(struct nameidata *, const char *); extern int page_readlink(struct dentry *, char __user *, int); -extern int page_follow_link_light(struct dentry *, struct nameidata *); -extern void page_put_link(struct dentry *, struct nameidata *); +extern void *page_follow_link_light(struct dentry *, struct nameidata *); +extern void page_put_link(struct dentry *, struct nameidata *, void *); extern int page_symlink(struct inode *inode, const char *symname, int len); extern struct inode_operations page_symlink_inode_operations; extern int generic_readlink(struct dentry *, char __user *, int); diff --git a/mm/shmem.c b/mm/shmem.c index e64fa726a79..5a81b1ee4f7 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1773,32 +1773,27 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s return 0; } -static int shmem_follow_link_inline(struct dentry *dentry, struct nameidata *nd) +static void *shmem_follow_link_inline(struct dentry *dentry, struct nameidata *nd) { nd_set_link(nd, (char *)SHMEM_I(dentry->d_inode)); - return 0; + return NULL; } -static int shmem_follow_link(struct dentry *dentry, struct nameidata *nd) +static void *shmem_follow_link(struct dentry *dentry, struct nameidata *nd) { struct page *page = NULL; int res = shmem_getpage(dentry->d_inode, 0, &page, SGP_READ, NULL); nd_set_link(nd, res ? ERR_PTR(res) : kmap(page)); - return 0; + return page; } -static void shmem_put_link(struct dentry *dentry, struct nameidata *nd) +static void shmem_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie) { if (!IS_ERR(nd_get_link(nd))) { - struct page *page; - - page = find_get_page(dentry->d_inode->i_mapping, 0); - if (!page) - BUG(); + struct page *page = cookie; kunmap(page); mark_page_accessed(page); page_cache_release(page); - page_cache_release(page); } } diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 9b9f94c915d..09ffca54b37 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -359,11 +359,16 @@ handle_modversions(struct module *mod, struct elf_info *info, /* ignore __this_module, it will be resolved shortly */ if (strcmp(symname, MODULE_SYMBOL_PREFIX "__this_module") == 0) break; -#ifdef STT_REGISTER +/* cope with newer glibc (2.3.4 or higher) STT_ definition in elf.h */ +#if defined(STT_REGISTER) || defined(STT_SPARC_REGISTER) +/* add compatibility with older glibc */ +#ifndef STT_SPARC_REGISTER +#define STT_SPARC_REGISTER STT_REGISTER +#endif if (info->hdr->e_machine == EM_SPARC || info->hdr->e_machine == EM_SPARCV9) { /* Ignore register directives. */ - if (ELF_ST_TYPE(sym->st_info) == STT_REGISTER) + if (ELF_ST_TYPE(sym->st_info) == STT_SPARC_REGISTER) break; } #endif |