Merge branch 'akpm' (patches from Andrew)

Merge third patch-bomb from Andrew Morton: "We're pretty much done over here - I'm still waiting for a nouveau merge so I can cleanly finish up Christoph's dma-mapping rework. - bunch of small misc stuff - fold abs64() into abs(), remove abs64() - new_valid_dev() cleanups - binfmt_elf_fdpic feature work" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (24 commits) fs/binfmt_elf_fdpic.c: provide NOMMU loader for regular ELF binaries fs/stat.c: remove unnecessary new_valid_dev() check fs/reiserfs/namei.c: remove unnecessary new_valid_dev() check fs/nilfs2/namei.c: remove unnecessary new_valid_dev() check fs/ncpfs/dir.c: remove unnecessary new_valid_dev() check fs/jfs: remove unnecessary new_valid_dev() checks fs/hpfs/namei.c: remove unnecessary new_valid_dev() check fs/f2fs/namei.c: remove unnecessary new_valid_dev() check fs/ext2/namei.c: remove unnecessary new_valid_dev() check fs/exofs/namei.c: remove unnecessary new_valid_dev() check fs/btrfs/inode.c: remove unnecessary new_valid_dev() check fs/9p: remove unnecessary new_valid_dev() checks include/linux/kdev_t.h: old/new_valid_dev() can return bool include/linux/kdev_t.h: remove unused huge_valid_dev() kmap_atomic_to_page() has no users, remove it drivers/scsi/cxgbi: fix build with EXTRA_CFLAGS dma: remove external references to dma_supported Documentation/sysctl/vm.txt: fix misleading code reference of overcommit_memory remove abs64() kernel.h: make abs() work with 64-bit types ...
joolstorrentecalo · Nov 10, 2015 · bd4f203 · bd4f203
2 parents e6604ec + 1bde925
commit bd4f203
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Showing 61 changed files with 104 additions and 221 deletions.
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
@@ -141,19 +141,6 @@ memory back to the pool before you destroy it.
 Part Ic - DMA addressing limitations
 ------------------------------------
 
-int
-dma_supported(struct device *dev, u64 mask)
-
-Checks to see if the device can support DMA to the memory described by
-mask.
-
-Returns: 1 if it can and 0 if it can't.
-
-Notes: This routine merely tests to see if the mask is possible.  It
-won't change the current mask settings.  It is more intended as an
-internal API for use by the platform than an external API for use by
-driver writers.
-
 int
 dma_set_mask_and_coherent(struct device *dev, u64 mask)
 

diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
@@ -639,7 +639,7 @@ and don't use much of it.
 The default value is 0.
 
 See Documentation/vm/overcommit-accounting and
-security/commoncap.c::cap_vm_enough_memory() for more information.
+mm/mmap.c::__vm_enough_memory() for more information.
 
 ==============================================================
 

diff --git a/arch/arm/include/asm/highmem.h b/arch/arm/include/asm/highmem.h
@@ -68,7 +68,6 @@ extern void kunmap(struct page *page);
 extern void *kmap_atomic(struct page *page);
 extern void __kunmap_atomic(void *kvaddr);
 extern void *kmap_atomic_pfn(unsigned long pfn);
-extern struct page *kmap_atomic_to_page(const void *ptr);
 #endif
 
 #endif
diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c
@@ -147,13 +147,3 @@ void *kmap_atomic_pfn(unsigned long pfn)
 
 	return (void *)vaddr;
 }
-
-struct page *kmap_atomic_to_page(const void *ptr)
-{
-	unsigned long vaddr = (unsigned long)ptr;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	return pte_page(get_fixmap_pte(vaddr));
-}
diff --git a/arch/frv/include/asm/highmem.h b/arch/frv/include/asm/highmem.h
@@ -62,8 +62,6 @@ extern void kunmap_high(struct page *page);
 extern void *kmap(struct page *page);
 extern void kunmap(struct page *page);
 
-extern struct page *kmap_atomic_to_page(void *ptr);
-
 #endif /* !__ASSEMBLY__ */
 
 /*

diff --git a/arch/frv/mm/highmem.c b/arch/frv/mm/highmem.c
@@ -32,11 +32,6 @@ void kunmap(struct page *page)
 
 EXPORT_SYMBOL(kunmap);
 
-struct page *kmap_atomic_to_page(void *ptr)
-{
-	return virt_to_page(ptr);
-}
-
 void *kmap_atomic(struct page *page)
 {
 	unsigned long paddr;

diff --git a/arch/metag/include/asm/highmem.h b/arch/metag/include/asm/highmem.h
@@ -56,7 +56,6 @@ extern void kunmap(struct page *page);
 extern void *kmap_atomic(struct page *page);
 extern void __kunmap_atomic(void *kvaddr);
 extern void *kmap_atomic_pfn(unsigned long pfn);
-extern struct page *kmap_atomic_to_page(void *ptr);
 #endif
 
 #endif
diff --git a/arch/metag/mm/highmem.c b/arch/metag/mm/highmem.c
@@ -111,20 +111,6 @@ void *kmap_atomic_pfn(unsigned long pfn)
 	return (void *)vaddr;
 }
 
-struct page *kmap_atomic_to_page(void *ptr)
-{
-	unsigned long vaddr = (unsigned long)ptr;
-	int idx;
-	pte_t *pte;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	idx = virt_to_fix(vaddr);
-	pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
-	return pte_page(*pte);
-}
-
 void __init kmap_init(void)
 {
 	unsigned long kmap_vstart;

diff --git a/arch/microblaze/include/asm/highmem.h b/arch/microblaze/include/asm/highmem.h
@@ -76,19 +76,6 @@ static inline void *kmap_atomic(struct page *page)
 	return kmap_atomic_prot(page, kmap_prot);
 }
 
-static inline struct page *kmap_atomic_to_page(void *ptr)
-{
-	unsigned long idx, vaddr = (unsigned long) ptr;
-	pte_t *pte;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	idx = virt_to_fix(vaddr);
-	pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
-	return pte_page(*pte);
-}
-
 #define flush_cache_kmaps()	{ flush_icache(); flush_dcache(); }
 
 #endif /* __KERNEL__ */

diff --git a/arch/mips/include/asm/highmem.h b/arch/mips/include/asm/highmem.h
@@ -49,7 +49,6 @@ extern void kunmap(struct page *page);
 extern void *kmap_atomic(struct page *page);
 extern void __kunmap_atomic(void *kvaddr);
 extern void *kmap_atomic_pfn(unsigned long pfn);
-extern struct page *kmap_atomic_to_page(void *ptr);
 
 #define flush_cache_kmaps()	flush_cache_all()
 

diff --git a/arch/mips/include/uapi/asm/unistd.h b/arch/mips/include/uapi/asm/unistd.h
@@ -379,16 +379,17 @@
 #define __NR_execveat			(__NR_Linux + 356)
 #define __NR_userfaultfd		(__NR_Linux + 357)
 #define __NR_membarrier			(__NR_Linux + 358)
+#define __NR_mlock2			(__NR_Linux + 359)
 
 /*
  * Offset of the last Linux o32 flavoured syscall
  */
-#define __NR_Linux_syscalls		358
+#define __NR_Linux_syscalls		359
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
 
 #define __NR_O32_Linux			4000
-#define __NR_O32_Linux_syscalls		358
+#define __NR_O32_Linux_syscalls		359
 
 #if _MIPS_SIM == _MIPS_SIM_ABI64
 
@@ -715,16 +716,17 @@
 #define __NR_execveat			(__NR_Linux + 316)
 #define __NR_userfaultfd		(__NR_Linux + 317)
 #define __NR_membarrier			(__NR_Linux + 318)
+#define __NR_mlock2			(__NR_Linux + 319)
 
 /*
  * Offset of the last Linux 64-bit flavoured syscall
  */
-#define __NR_Linux_syscalls		318
+#define __NR_Linux_syscalls		319
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
 
 #define __NR_64_Linux			5000
-#define __NR_64_Linux_syscalls		318
+#define __NR_64_Linux_syscalls		319
 
 #if _MIPS_SIM == _MIPS_SIM_NABI32
 
@@ -1055,15 +1057,16 @@
 #define __NR_execveat			(__NR_Linux + 320)
 #define __NR_userfaultfd		(__NR_Linux + 321)
 #define __NR_membarrier			(__NR_Linux + 322)
+#define __NR_mlock2			(__NR_Linux + 323)
 
 /*
  * Offset of the last N32 flavoured syscall
  */
-#define __NR_Linux_syscalls		322
+#define __NR_Linux_syscalls		323
 
 #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
 
 #define __NR_N32_Linux			6000
-#define __NR_N32_Linux_syscalls		322
+#define __NR_N32_Linux_syscalls		323
 
 #endif /* _UAPI_ASM_UNISTD_H */
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
@@ -594,3 +594,4 @@ EXPORT(sys_call_table)
 	PTR	sys_execveat
 	PTR	sys_userfaultfd
 	PTR	sys_membarrier
+	PTR	sys_mlock2
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
@@ -432,4 +432,5 @@ EXPORT(sys_call_table)
 	PTR	sys_execveat
 	PTR	sys_userfaultfd
 	PTR	sys_membarrier
+	PTR	sys_mlock2
 	.size	sys_call_table,.-sys_call_table
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
@@ -422,4 +422,5 @@ EXPORT(sysn32_call_table)
 	PTR	compat_sys_execveat		/* 6320 */
 	PTR	sys_userfaultfd
 	PTR	sys_membarrier
+	PTR	sys_mlock2
 	.size	sysn32_call_table,.-sysn32_call_table
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
@@ -577,4 +577,5 @@ EXPORT(sys32_call_table)
 	PTR	compat_sys_execveat
 	PTR	sys_userfaultfd
 	PTR	sys_membarrier
+	PTR	sys_mlock2
 	.size	sys32_call_table,.-sys32_call_table
diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c
@@ -118,19 +118,6 @@ void *kmap_atomic_pfn(unsigned long pfn)
 	return (void*) vaddr;
 }
 
-struct page *kmap_atomic_to_page(void *ptr)
-{
-	unsigned long idx, vaddr = (unsigned long)ptr;
-	pte_t *pte;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	idx = virt_to_fix(vaddr);
-	pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
-	return pte_page(*pte);
-}
-
 void __init kmap_init(void)
 {
 	unsigned long kmap_vstart;

diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
@@ -156,7 +156,6 @@ static inline void __kunmap_atomic(void *addr)
 
 #define kmap_atomic_prot(page, prot)	kmap_atomic(page)
 #define kmap_atomic_pfn(pfn)	kmap_atomic(pfn_to_page(pfn))
-#define kmap_atomic_to_page(ptr)	virt_to_page(ptr)
 
 #endif /* _PARISC_CACHEFLUSH_H */
 
diff --git a/arch/powerpc/include/asm/highmem.h b/arch/powerpc/include/asm/highmem.h
@@ -84,19 +84,6 @@ static inline void *kmap_atomic(struct page *page)
 	return kmap_atomic_prot(page, kmap_prot);
 }
 
-static inline struct page *kmap_atomic_to_page(void *ptr)
-{
-	unsigned long idx, vaddr = (unsigned long) ptr;
-	pte_t *pte;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	idx = virt_to_fix(vaddr);
-	pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
-	return pte_page(*pte);
-}
-
 
 #define flush_cache_kmaps()	flush_cache_all()
 

diff --git a/arch/sparc/include/uapi/asm/unistd.h b/arch/sparc/include/uapi/asm/unistd.h
@@ -416,8 +416,9 @@
 #define __NR_memfd_create	348
 #define __NR_bpf		349
 #define __NR_execveat		350
+#define __NR_membarrier		351
 
-#define NR_syscalls		351
+#define NR_syscalls		352
 
 /* Bitmask values returned from kern_features system call.  */
 #define KERN_FEATURE_MIXED_MODE_STACK	0x00000001

diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
@@ -87,4 +87,4 @@ sys_call_table:
 /*335*/	.long sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev
 /*340*/	.long sys_ni_syscall, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr
 /*345*/	.long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
-/*350*/	.long sys_execveat
+/*350*/	.long sys_execveat, sys_membarrier
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
@@ -88,7 +88,7 @@ sys_call_table32:
 	.word sys_syncfs, compat_sys_sendmmsg, sys_setns, compat_sys_process_vm_readv, compat_sys_process_vm_writev
 /*340*/	.word sys_kern_features, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr
 	.word sys32_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
-/*350*/	.word sys32_execveat
+/*350*/	.word sys32_execveat, sys_membarrier
 
 #endif /* CONFIG_COMPAT */
 
@@ -168,4 +168,4 @@ sys_call_table:
 	.word sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev
 /*340*/	.word sys_kern_features, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr
 	.word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
-/*350*/	.word sys64_execveat
+/*350*/	.word sys64_execveat, sys_membarrier
diff --git a/arch/tile/include/asm/highmem.h b/arch/tile/include/asm/highmem.h
@@ -63,7 +63,6 @@ void *kmap_atomic(struct page *page);
 void __kunmap_atomic(void *kvaddr);
 void *kmap_atomic_pfn(unsigned long pfn);
 void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot);
-struct page *kmap_atomic_to_page(void *ptr);
 void *kmap_atomic_prot(struct page *page, pgprot_t prot);
 void kmap_atomic_fix_kpte(struct page *page, int finished);
 

diff --git a/arch/tile/mm/highmem.c b/arch/tile/mm/highmem.c
@@ -275,15 +275,3 @@ void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot)
 {
 	return kmap_atomic_prot(pfn_to_page(pfn), prot);
 }
-
-struct page *kmap_atomic_to_page(void *ptr)
-{
-	pte_t *pte;
-	unsigned long vaddr = (unsigned long)ptr;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	pte = kmap_get_pte(vaddr);
-	return pte_page(*pte);
-}
diff --git a/arch/x86/include/asm/highmem.h b/arch/x86/include/asm/highmem.h
@@ -68,7 +68,6 @@ void *kmap_atomic(struct page *page);
 void __kunmap_atomic(void *kvaddr);
 void *kmap_atomic_pfn(unsigned long pfn);
 void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot);
-struct page *kmap_atomic_to_page(void *ptr);
 
 #define flush_cache_kmaps()	do { } while (0)
 

diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
@@ -104,20 +104,6 @@ void __kunmap_atomic(void *kvaddr)
 }
 EXPORT_SYMBOL(__kunmap_atomic);
 
-struct page *kmap_atomic_to_page(void *ptr)
-{
-	unsigned long idx, vaddr = (unsigned long)ptr;
-	pte_t *pte;
-
-	if (vaddr < FIXADDR_START)
-		return virt_to_page(ptr);
-
-	idx = virt_to_fix(vaddr);
-	pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
-	return pte_page(*pte);
-}
-EXPORT_SYMBOL(kmap_atomic_to_page);
-
 void __init set_highmem_pages_init(void)
 {
 	struct zone *zone;

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
@@ -261,7 +261,7 @@ static void vblank_disable_and_save(struct drm_device *dev, unsigned int pipe)
 	 * available. In that case we can't account for this and just
 	 * hope for the best.
 	 */
-	if (vblrc && (abs64(diff_ns) > 1000000))
+	if (vblrc && (abs(diff_ns) > 1000000))
 		store_vblank(dev, pipe, 1, &tvblank);
 
 	spin_unlock_irqrestore(&dev->vblank_time_lock, irqflags);
@@ -1772,7 +1772,7 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)
 	 * e.g., due to spurious vblank interrupts. We need to
 	 * ignore those for accounting.
 	 */
-	if (abs64(diff_ns) > DRM_REDUNDANT_VBLIRQ_THRESH_NS)
+	if (abs(diff_ns) > DRM_REDUNDANT_VBLIRQ_THRESH_NS)
 		store_vblank(dev, pipe, 1, &tvblank);
 	else
 		DRM_DEBUG("crtc %u: Redundant vblirq ignored. diff_ns = %d\n",

diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
@@ -555,11 +555,11 @@ static int tegra_sor_compute_params(struct tegra_sor *sor,
 	error = div_s64(active_sym - approx, tu_size);
 	error *= params->num_clocks;
 
-	if (error <= 0 && abs64(error) < params->error) {
+	if (error <= 0 && abs(error) < params->error) {
 		params->active_count = div_u64(active_count, f);
 		params->active_polarity = active_polarity;
 		params->active_frac = active_frac;
-		params->error = abs64(error);
+		params->error = abs(error);
 		params->tu_size = tu_size;
 
 		if (error == 0)

diff --git a/drivers/input/joystick/walkera0701.c b/drivers/input/joystick/walkera0701.c
@@ -150,7 +150,7 @@ static void walkera0701_irq_handler(void *handler_data)
 		if (w->counter == 24) {	/* full frame */
 			walkera0701_parse_frame(w);
 			w->counter = NO_SYNC;
-			if (abs64(pulse_time - SYNC_PULSE) < RESERVE)	/* new frame sync */
+			if (abs(pulse_time - SYNC_PULSE) < RESERVE)	/* new frame sync */
 				w->counter = 0;
 		} else {
 			if ((pulse_time > (ANALOG_MIN_PULSE - RESERVE)
@@ -161,7 +161,7 @@ static void walkera0701_irq_handler(void *handler_data)
 			} else
 				w->counter = NO_SYNC;
 		}
-	} else if (abs64(pulse_time - SYNC_PULSE - BIN0_PULSE) <
+	} else if (abs(pulse_time - SYNC_PULSE - BIN0_PULSE) <
 				RESERVE + BIN1_PULSE - BIN0_PULSE)	/* frame sync .. */
 		w->counter = 0;