Merge branch 'ElementalX-5.00' of https://github.com/flar2/Elemental…

…X-N9 into nougat

Documentation/kernel-parameters.txt

@@ -2891,6 +2891,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 	spia_pedr=
 	spia_peddr=
 
+	stack_guard_gap=	[MM]
+			override the default stack gap protection. The value
+			is in page units and it defines how many pages prior
+			to (for stacks growing down) resp. after (for stacks
+			growing up) the main stack are reserved for no other
+			mapping. Default value is 256 pages.
+
 	stacktrace	[FTRACE]
 			Enabled the stack tracer on boot up.
 

arch/arc/mm/mmap.c

@@ -64,7 +64,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 

arch/arm/mm/mmap.c

@@ -90,7 +90,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 
@@ -155,7 +155,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 			addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-				(!vma || addr + len <= vma->vm_start))
+				(!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 

arch/arm64/configs/elementalx_defconfig

@@ -39,7 +39,7 @@ CONFIG_IRQ_WORK=y
 #
 CONFIG_INIT_ENV_ARG_LIMIT=32
 CONFIG_CROSS_COMPILE=""
-CONFIG_LOCALVERSION="-ElementalX-N9-5.14"
+CONFIG_LOCALVERSION="-ElementalX-N9-5.15"
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_DEFAULT_HOSTNAME=""
 CONFIG_SWAP=y
@@ -517,7 +517,7 @@ CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
 # CONFIG_CPU_FREQ_DEFAULT_GOV_INTERACTIVE is not set
 CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
 CONFIG_CPU_FREQ_GOV_POWERSAVE=y
-# CONFIG_CPU_FREQ_GOV_USERSPACE is not set
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
 CONFIG_CPU_FREQ_GOV_ONDEMAND=y
 CONFIG_CPU_FREQ_GOV_ELEMENTALX=y
 CONFIG_CPU_FREQ_GOV_INTERACTIVE=y

arch/frv/mm/elf-fdpic.c

@@ -74,7 +74,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(current->mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			goto success;
 	}
 

arch/mips/mm/mmap.c

@@ -92,7 +92,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
 
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 

arch/powerpc/mm/slice.c

@@ -103,7 +103,7 @@ static int slice_area_is_free(struct mm_struct *mm, unsigned long addr,
 	if ((mm->task_size - len) < addr)
 		return 0;
 	vma = find_vma(mm, addr);
-	return (!vma || (addr + len) <= vma->vm_start);
+	return (!vma || (addr + len) <= vm_start_gap(vma));
 }
 
 static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice)

arch/sh/mm/mmap.c

@@ -63,7 +63,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 
@@ -113,7 +113,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 

arch/sparc/kernel/sys_sparc_64.c

@@ -119,7 +119,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 
 		vma = find_vma(mm, addr);
 		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 
@@ -182,7 +182,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 
 		vma = find_vma(mm, addr);
 		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 

arch/sparc/mm/hugetlbpage.c

@@ -118,7 +118,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 		addr = ALIGN(addr, HPAGE_SIZE);
 		vma = find_vma(mm, addr);
 		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 	if (mm->get_unmapped_area == arch_get_unmapped_area)

arch/tile/mm/hugetlbpage.c

@@ -297,7 +297,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 		addr = ALIGN(addr, huge_page_size(h));
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 	if (current->mm->get_unmapped_area == arch_get_unmapped_area)

arch/x86/kernel/sys_x86_64.c

@@ -127,7 +127,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
 		if (end - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 
@@ -166,7 +166,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-				(!vma || addr + len <= vma->vm_start))
+				(!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 

arch/x86/mm/hugetlbpage.c

@@ -341,7 +341,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 		addr = ALIGN(addr, huge_page_size(h));
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 	if (mm->get_unmapped_area == arch_get_unmapped_area)

arch/xtensa/kernel/syscall.c

@@ -86,7 +86,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 		/* At this point:  (!vmm || addr < vmm->vm_end). */
 		if (TASK_SIZE - len < addr)
 			return -ENOMEM;
-		if (!vmm || addr + len <= vmm->vm_start)
+		if (!vmm || addr + len <= vm_start_gap(vmm))
 			return addr;
 		addr = vmm->vm_end;
 		if (flags & MAP_SHARED)

drivers/md/dm-ioctl.c

@@ -1767,7 +1767,7 @@ static int ctl_ioctl(uint command, struct dm_ioctl __user *user)
 	if (r)
 		goto out;
 
-	param->data_size = offsetof(struct dm_ioctl, data);
+	param->data_size = sizeof(*param);
 	r = fn(param, input_param_size);
 
 	if (unlikely(param->flags & DM_BUFFER_FULL_FLAG) &&

drivers/net/wireless/bcmdhd/bcmsdh_sdmmc.c

@@ -406,8 +406,6 @@ const bcm_iovar_t sdioh_iovars[] = {
 	{"sd_ints", 	IOV_USEINTS,	0,	IOVT_BOOL,	0 },
 	{"sd_numints",	IOV_NUMINTS,	0,	IOVT_UINT32,	0 },
 	{"sd_numlocalints", IOV_NUMLOCALINTS, 0, IOVT_UINT32,	0 },
-	{"sd_hostreg",	IOV_HOSTREG,	0,	IOVT_BUFFER,	sizeof(sdreg_t) },
-	{"sd_devreg",	IOV_DEVREG, 	0,	IOVT_BUFFER,	sizeof(sdreg_t) },
 	{"sd_divisor",	IOV_DIVISOR,	0,	IOVT_UINT32,	0 },
 	{"sd_power",	IOV_POWER,	0,	IOVT_UINT32,	0 },
 	{"sd_clock",	IOV_CLOCK,	0,	IOVT_UINT32,	0 },
@@ -608,73 +606,6 @@ sdioh_iovar_op(sdioh_info_t *si, const char *name,
 		bcopy(&int_val, arg, sizeof(int_val));
 		break;
 
-	case IOV_GVAL(IOV_HOSTREG):
-	{
-		sdreg_t *sd_ptr = (sdreg_t *)params;
-
-		if (sd_ptr->offset < SD_SysAddr || sd_ptr->offset > SD_MaxCurCap) {
-			sd_err(("%s: bad offset 0x%x\n", __FUNCTION__, sd_ptr->offset));
-			bcmerror = BCME_BADARG;
-			break;
-		}
-
-		sd_trace(("%s: rreg%d at offset %d\n", __FUNCTION__,
-		                  (sd_ptr->offset & 1) ? 8 : ((sd_ptr->offset & 2) ? 16 : 32),
-		                  sd_ptr->offset));
-		if (sd_ptr->offset & 1)
-			int_val = 8; /* sdioh_sdmmc_rreg8(si, sd_ptr->offset); */
-		else if (sd_ptr->offset & 2)
-			int_val = 16; /* sdioh_sdmmc_rreg16(si, sd_ptr->offset); */
-		else
-			int_val = 32; /* sdioh_sdmmc_rreg(si, sd_ptr->offset); */
-
-		bcopy(&int_val, arg, sizeof(int_val));
-		break;
-	}
-
-	case IOV_SVAL(IOV_HOSTREG):
-	{
-		sdreg_t *sd_ptr = (sdreg_t *)params;
-
-		if (sd_ptr->offset < SD_SysAddr || sd_ptr->offset > SD_MaxCurCap) {
-			sd_err(("%s: bad offset 0x%x\n", __FUNCTION__, sd_ptr->offset));
-			bcmerror = BCME_BADARG;
-			break;
-		}
-
-		sd_trace(("%s: wreg%d value 0x%08x at offset %d\n", __FUNCTION__, sd_ptr->value,
-		                  (sd_ptr->offset & 1) ? 8 : ((sd_ptr->offset & 2) ? 16 : 32),
-		                  sd_ptr->offset));
-		break;
-	}
-
-	case IOV_GVAL(IOV_DEVREG):
-	{
-		sdreg_t *sd_ptr = (sdreg_t *)params;
-		uint8 data = 0;
-
-		if (sdioh_cfg_read(si, sd_ptr->func, sd_ptr->offset, &data)) {
-			bcmerror = BCME_SDIO_ERROR;
-			break;
-		}
-
-		int_val = (int)data;
-		bcopy(&int_val, arg, sizeof(int_val));
-		break;
-	}
-
-	case IOV_SVAL(IOV_DEVREG):
-	{
-		sdreg_t *sd_ptr = (sdreg_t *)params;
-		uint8 data = (uint8)sd_ptr->value;
-
-		if (sdioh_cfg_write(si, sd_ptr->func, sd_ptr->offset, &data)) {
-			bcmerror = BCME_SDIO_ERROR;
-			break;
-		}
-		break;
-	}
-
 	default:
 		bcmerror = BCME_UNSUPPORTED;
 		break;

fs/ext4/inode.c

@@ -659,6 +659,20 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
 		ret = check_block_validity(inode, map);
 		if (ret != 0)
 			return ret;
+
+		/*
+		 * Inodes with freshly allocated blocks where contents will be
+		 * visible after transaction commit must be on transaction's
+		 * ordered data list.
+		 */
+		if (map->m_flags & EXT4_MAP_NEW &&
+		    !(map->m_flags & EXT4_MAP_UNWRITTEN) &&
+		    !IS_NOQUOTA(inode) &&
+		    ext4_should_order_data(inode)) {
+			ret = ext4_jbd2_file_inode(handle, inode);
+			if (ret)
+				return ret;
+		}
 	}
 	return retval;
 }
@@ -1114,15 +1128,6 @@ static int ext4_write_end(struct file *file,
 	int i_size_changed = 0;
 
 	trace_ext4_write_end(inode, pos, len, copied);
-	if (ext4_test_inode_state(inode, EXT4_STATE_ORDERED_MODE)) {
-		ret = ext4_jbd2_file_inode(handle, inode);
-		if (ret) {
-			unlock_page(page);
-			page_cache_release(page);
-			goto errout;
-		}
-	}
-
 	if (ext4_has_inline_data(inode)) {
 		ret = ext4_write_inline_data_end(inode, pos, len,
 						 copied, page);

fs/hugetlbfs/inode.c

@@ -169,7 +169,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 		addr = ALIGN(addr, huge_page_size(h));
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 

fs/proc/task_mmu.c

@@ -329,11 +329,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
 
 	/* We don't show the stack guard page in /proc/maps */
 	start = vma->vm_start;
-	if (stack_guard_page_start(vma, start))
-		start += PAGE_SIZE;
 	end = vma->vm_end;
-	if (stack_guard_page_end(vma, end))
-		end -= PAGE_SIZE;
 
 	seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
 			start,

include/linux/mm.h

@@ -1082,34 +1082,6 @@ int set_page_dirty(struct page *page);
 int set_page_dirty_lock(struct page *page);
 int clear_page_dirty_for_io(struct page *page);
 
-/* Is the vma a continuation of the stack vma above it? */
-static inline int vma_growsdown(struct vm_area_struct *vma, unsigned long addr)
-{
-	return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN);
-}
-
-static inline int stack_guard_page_start(struct vm_area_struct *vma,
-					     unsigned long addr)
-{
-	return (vma->vm_flags & VM_GROWSDOWN) &&
-		(vma->vm_start == addr) &&
-		!vma_growsdown(vma->vm_prev, addr);
-}
-
-/* Is the vma a continuation of the stack vma below it? */
-static inline int vma_growsup(struct vm_area_struct *vma, unsigned long addr)
-{
-	return vma && (vma->vm_start == addr) && (vma->vm_flags & VM_GROWSUP);
-}
-
-static inline int stack_guard_page_end(struct vm_area_struct *vma,
-					   unsigned long addr)
-{
-	return (vma->vm_flags & VM_GROWSUP) &&
-		(vma->vm_end == addr) &&
-		!vma_growsup(vma->vm_next, addr);
-}
-
 extern pid_t
 vm_is_stack(struct task_struct *task, struct vm_area_struct *vma, int in_group);
 
@@ -1641,6 +1613,7 @@ unsigned long ra_submit(struct file_ra_state *ra,
 			struct address_space *mapping,
 			struct file *filp);
 
+extern unsigned long stack_guard_gap;
 /* Generic expand stack which grows the stack according to GROWS{UP,DOWN} */
 extern int expand_stack(struct vm_area_struct *vma, unsigned long address);
 
@@ -1669,6 +1642,30 @@ static inline struct vm_area_struct * find_vma_intersection(struct mm_struct * m
 	return vma;
 }
 
+static inline unsigned long vm_start_gap(struct vm_area_struct *vma)
+{
+	unsigned long vm_start = vma->vm_start;
+
+	if (vma->vm_flags & VM_GROWSDOWN) {
+		vm_start -= stack_guard_gap;
+		if (vm_start > vma->vm_start)
+			vm_start = 0;
+	}
+	return vm_start;
+}
+
+static inline unsigned long vm_end_gap(struct vm_area_struct *vma)
+{
+	unsigned long vm_end = vma->vm_end;
+
+	if (vma->vm_flags & VM_GROWSUP) {
+		vm_end += stack_guard_gap;
+		if (vm_end < vma->vm_end)
+			vm_end = -PAGE_SIZE;
+	}
+	return vm_end;
+}
+
 static inline unsigned long vma_pages(struct vm_area_struct *vma)
 {
 	return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;