From 5be0e9511990dc307670dc66a42073db96b20f26 Mon Sep 17 00:00:00 2001
From: Neil Horman <nhorman@tuxdriver.com>
Date: Thu, 23 Mar 2006 02:59:19 -0800
Subject: [PATCH] proc: fix duplicate line in /proc/devices

Fix a duplicate block device line printed after the "Block device" header
in /proc/devices.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 fs/proc/proc_misc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'fs/proc/proc_misc.c')

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 1d24fead51a..826c131994c 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -312,7 +312,7 @@ static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
 		case BLK_HDR:
 			info->state = BLK_LIST;
 			(*pos)++;
-			break;
+			/*fallthrough*/
 		case BLK_LIST:
 			if (get_blkdev_info(info->blkdev,&idummy,&ndummy)) {
 				/*
-- 
cgit v1.2.3-70-g09d2


From 871751e25d956ad24f129ca972b7851feaa61d53 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 25 Mar 2006 03:06:39 -0800
Subject: [PATCH] slab: implement /proc/slab_allocators

Implement /proc/slab_allocators.   It produces output like:

idr_layer_cache: 80 idr_pre_get+0x33/0x4e
buffer_head: 2555 alloc_buffer_head+0x20/0x75
mm_struct: 9 mm_alloc+0x1e/0x42
mm_struct: 20 dup_mm+0x36/0x370
vm_area_struct: 384 dup_mm+0x18f/0x370
vm_area_struct: 151 do_mmap_pgoff+0x2e0/0x7c3
vm_area_struct: 1 split_vma+0x5a/0x10e
vm_area_struct: 11 do_brk+0x206/0x2e2
vm_area_struct: 2 copy_vma+0xda/0x142
vm_area_struct: 9 setup_arg_pages+0x99/0x214
fs_cache: 8 copy_fs_struct+0x21/0x133
fs_cache: 29 copy_process+0xf38/0x10e3
files_cache: 30 alloc_files+0x1b/0xcf
signal_cache: 81 copy_process+0xbaa/0x10e3
sighand_cache: 77 copy_process+0xe65/0x10e3
sighand_cache: 1 de_thread+0x4d/0x5f8
anon_vma: 241 anon_vma_prepare+0xd9/0xf3
size-2048: 1 add_sect_attrs+0x5f/0x145
size-2048: 2 journal_init_revoke+0x99/0x302
size-2048: 2 journal_init_revoke+0x137/0x302
size-2048: 2 journal_init_inode+0xf9/0x1c4

Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Alexander Nyberg <alexn@telia.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
DESC
slab-leaks3-locking-fix
EDESC
From: Andrew Morton <akpm@osdl.org>

Update for slab-remove-cachep-spinlock.patch

Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Alexander Nyberg <alexn@telia.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 fs/proc/proc_misc.c  |  37 +++++++++++
 include/linux/slab.h |   6 +-
 lib/Kconfig.debug    |   4 ++
 mm/slab.c            | 180 +++++++++++++++++++++++++++++++++++++++++++++++++--
 mm/util.c            |   4 +-
 net/core/skbuff.c    |   2 +-
 6 files changed, 222 insertions(+), 11 deletions(-)

(limited to 'fs/proc/proc_misc.c')

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 826c131994c..1e9ea37d457 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -485,6 +485,40 @@ static struct file_operations proc_slabinfo_operations = {
 	.llseek		= seq_lseek,
 	.release	= seq_release,
 };
+
+#ifdef CONFIG_DEBUG_SLAB_LEAK
+extern struct seq_operations slabstats_op;
+static int slabstats_open(struct inode *inode, struct file *file)
+{
+	unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
+	int ret = -ENOMEM;
+	if (n) {
+		ret = seq_open(file, &slabstats_op);
+		if (!ret) {
+			struct seq_file *m = file->private_data;
+			*n = PAGE_SIZE / (2 * sizeof(unsigned long));
+			m->private = n;
+			n = NULL;
+		}
+		kfree(n);
+	}
+	return ret;
+}
+
+static int slabstats_release(struct inode *inode, struct file *file)
+{
+	struct seq_file *m = file->private_data;
+	kfree(m->private);
+	return seq_release(inode, file);
+}
+
+static struct file_operations proc_slabstats_operations = {
+	.open		= slabstats_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= slabstats_release,
+};
+#endif
 #endif
 
 static int show_stat(struct seq_file *p, void *v)
@@ -744,6 +778,9 @@ void __init proc_misc_init(void)
 	create_seq_entry("interrupts", 0, &proc_interrupts_operations);
 #ifdef CONFIG_SLAB
 	create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
+#ifdef CONFIG_DEBUG_SLAB_LEAK
+	create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
+#endif
 #endif
 	create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
 	create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
diff --git a/include/linux/slab.h b/include/linux/slab.h
index e2ee5b26879..f88e08a5802 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -77,11 +77,12 @@ struct cache_sizes {
 };
 extern struct cache_sizes malloc_sizes[];
 
-#ifndef CONFIG_DEBUG_SLAB
 extern void *__kmalloc(size_t, gfp_t);
+#ifndef CONFIG_DEBUG_SLAB
+#define ____kmalloc(size, flags) __kmalloc(size, flags)
 #else
 extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
-#define __kmalloc(size, flags) \
+#define ____kmalloc(size, flags) \
     __kmalloc_track_caller(size, flags, __builtin_return_address(0))
 #endif
 
@@ -173,6 +174,7 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 #define kmem_ptr_validate(a, b) (0)
 #define kmem_cache_alloc_node(c, f, n) kmem_cache_alloc(c, f)
 #define kmalloc_node(s, f, n) kmalloc(s, f)
+#define ____kmalloc kmalloc
 
 #endif /* CONFIG_SLOB */
 
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index f2618e1c2b9..1fe3f897145 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -85,6 +85,10 @@ config DEBUG_SLAB
 	  allocation as well as poisoning memory on free to catch use of freed
 	  memory. This can make kmalloc/kfree-intensive workloads much slower.
 
+config DEBUG_SLAB_LEAK
+	bool "Memory leak debugging"
+	depends on DEBUG_SLAB
+
 config DEBUG_PREEMPT
 	bool "Debug preemptible kernel"
 	depends on DEBUG_KERNEL && PREEMPT
diff --git a/mm/slab.c b/mm/slab.c
index 26138c9f8f0..a5047161084 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -204,7 +204,8 @@
 typedef unsigned int kmem_bufctl_t;
 #define BUFCTL_END	(((kmem_bufctl_t)(~0U))-0)
 #define BUFCTL_FREE	(((kmem_bufctl_t)(~0U))-1)
-#define	SLAB_LIMIT	(((kmem_bufctl_t)(~0U))-2)
+#define	BUFCTL_ACTIVE	(((kmem_bufctl_t)(~0U))-2)
+#define	SLAB_LIMIT	(((kmem_bufctl_t)(~0U))-3)
 
 /* Max number of objs-per-slab for caches which use off-slab slabs.
  * Needed to avoid a possible looping condition in cache_grow().
@@ -2399,7 +2400,7 @@ static void slab_put_obj(struct kmem_cache *cachep, struct slab *slabp,
 	/* Verify that the slab belongs to the intended node */
 	WARN_ON(slabp->nodeid != nodeid);
 
-	if (slab_bufctl(slabp)[objnr] != BUFCTL_FREE) {
+	if (slab_bufctl(slabp)[objnr] + 1 <= SLAB_LIMIT + 1) {
 		printk(KERN_ERR "slab: double free detected in cache "
 				"'%s', objp %p\n", cachep->name, objp);
 		BUG();
@@ -2605,6 +2606,9 @@ static void *cache_free_debugcheck(struct kmem_cache *cachep, void *objp,
 		 */
 		cachep->dtor(objp + obj_offset(cachep), cachep, 0);
 	}
+#ifdef CONFIG_DEBUG_SLAB_LEAK
+	slab_bufctl(slabp)[objnr] = BUFCTL_FREE;
+#endif
 	if (cachep->flags & SLAB_POISON) {
 #ifdef CONFIG_DEBUG_PAGEALLOC
 		if ((cachep->buffer_size % PAGE_SIZE)==0 && OFF_SLAB(cachep)) {
@@ -2788,6 +2792,16 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep,
 		*dbg_redzone1(cachep, objp) = RED_ACTIVE;
 		*dbg_redzone2(cachep, objp) = RED_ACTIVE;
 	}
+#ifdef CONFIG_DEBUG_SLAB_LEAK
+	{
+		struct slab *slabp;
+		unsigned objnr;
+
+		slabp = page_get_slab(virt_to_page(objp));
+		objnr = (unsigned)(objp - slabp->s_mem) / cachep->buffer_size;
+		slab_bufctl(slabp)[objnr] = BUFCTL_ACTIVE;
+	}
+#endif
 	objp += obj_offset(cachep);
 	if (cachep->ctor && cachep->flags & SLAB_POISON) {
 		unsigned long ctor_flags = SLAB_CTOR_CONSTRUCTOR;
@@ -3220,22 +3234,23 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags,
 	return __cache_alloc(cachep, flags, caller);
 }
 
-#ifndef CONFIG_DEBUG_SLAB
 
 void *__kmalloc(size_t size, gfp_t flags)
 {
+#ifndef CONFIG_DEBUG_SLAB
 	return __do_kmalloc(size, flags, NULL);
+#else
+	return __do_kmalloc(size, flags, __builtin_return_address(0));
+#endif
 }
 EXPORT_SYMBOL(__kmalloc);
 
-#else
-
+#ifdef CONFIG_DEBUG_SLAB
 void *__kmalloc_track_caller(size_t size, gfp_t flags, void *caller)
 {
 	return __do_kmalloc(size, flags, caller);
 }
 EXPORT_SYMBOL(__kmalloc_track_caller);
-
 #endif
 
 #ifdef CONFIG_SMP
@@ -3899,6 +3914,159 @@ ssize_t slabinfo_write(struct file *file, const char __user * buffer,
 		res = count;
 	return res;
 }
+
+#ifdef CONFIG_DEBUG_SLAB_LEAK
+
+static void *leaks_start(struct seq_file *m, loff_t *pos)
+{
+	loff_t n = *pos;
+	struct list_head *p;
+
+	mutex_lock(&cache_chain_mutex);
+	p = cache_chain.next;
+	while (n--) {
+		p = p->next;
+		if (p == &cache_chain)
+			return NULL;
+	}
+	return list_entry(p, struct kmem_cache, next);
+}
+
+static inline int add_caller(unsigned long *n, unsigned long v)
+{
+	unsigned long *p;
+	int l;
+	if (!v)
+		return 1;
+	l = n[1];
+	p = n + 2;
+	while (l) {
+		int i = l/2;
+		unsigned long *q = p + 2 * i;
+		if (*q == v) {
+			q[1]++;
+			return 1;
+		}
+		if (*q > v) {
+			l = i;
+		} else {
+			p = q + 2;
+			l -= i + 1;
+		}
+	}
+	if (++n[1] == n[0])
+		return 0;
+	memmove(p + 2, p, n[1] * 2 * sizeof(unsigned long) - ((void *)p - (void *)n));
+	p[0] = v;
+	p[1] = 1;
+	return 1;
+}
+
+static void handle_slab(unsigned long *n, struct kmem_cache *c, struct slab *s)
+{
+	void *p;
+	int i;
+	if (n[0] == n[1])
+		return;
+	for (i = 0, p = s->s_mem; i < c->num; i++, p += c->buffer_size) {
+		if (slab_bufctl(s)[i] != BUFCTL_ACTIVE)
+			continue;
+		if (!add_caller(n, (unsigned long)*dbg_userword(c, p)))
+			return;
+	}
+}
+
+static void show_symbol(struct seq_file *m, unsigned long address)
+{
+#ifdef CONFIG_KALLSYMS
+	char *modname;
+	const char *name;
+	unsigned long offset, size;
+	char namebuf[KSYM_NAME_LEN+1];
+
+	name = kallsyms_lookup(address, &size, &offset, &modname, namebuf);
+
+	if (name) {
+		seq_printf(m, "%s+%#lx/%#lx", name, offset, size);
+		if (modname)
+			seq_printf(m, " [%s]", modname);
+		return;
+	}
+#endif
+	seq_printf(m, "%p", (void *)address);
+}
+
+static int leaks_show(struct seq_file *m, void *p)
+{
+	struct kmem_cache *cachep = p;
+	struct list_head *q;
+	struct slab *slabp;
+	struct kmem_list3 *l3;
+	const char *name;
+	unsigned long *n = m->private;
+	int node;
+	int i;
+
+	if (!(cachep->flags & SLAB_STORE_USER))
+		return 0;
+	if (!(cachep->flags & SLAB_RED_ZONE))
+		return 0;
+
+	/* OK, we can do it */
+
+	n[1] = 0;
+
+	for_each_online_node(node) {
+		l3 = cachep->nodelists[node];
+		if (!l3)
+			continue;
+
+		check_irq_on();
+		spin_lock_irq(&l3->list_lock);
+
+		list_for_each(q, &l3->slabs_full) {
+			slabp = list_entry(q, struct slab, list);
+			handle_slab(n, cachep, slabp);
+		}
+		list_for_each(q, &l3->slabs_partial) {
+			slabp = list_entry(q, struct slab, list);
+			handle_slab(n, cachep, slabp);
+		}
+		spin_unlock_irq(&l3->list_lock);
+	}
+	name = cachep->name;
+	if (n[0] == n[1]) {
+		/* Increase the buffer size */
+		mutex_unlock(&cache_chain_mutex);
+		m->private = kzalloc(n[0] * 4 * sizeof(unsigned long), GFP_KERNEL);
+		if (!m->private) {
+			/* Too bad, we are really out */
+			m->private = n;
+			mutex_lock(&cache_chain_mutex);
+			return -ENOMEM;
+		}
+		*(unsigned long *)m->private = n[0] * 2;
+		kfree(n);
+		mutex_lock(&cache_chain_mutex);
+		/* Now make sure this entry will be retried */
+		m->count = m->size;
+		return 0;
+	}
+	for (i = 0; i < n[1]; i++) {
+		seq_printf(m, "%s: %lu ", name, n[2*i+3]);
+		show_symbol(m, n[2*i+2]);
+		seq_putc(m, '\n');
+	}
+	return 0;
+}
+
+struct seq_operations slabstats_op = {
+	.start = leaks_start,
+	.next = s_next,
+	.stop = s_stop,
+	.show = leaks_show,
+};
+#endif
 #endif
 
 /**
diff --git a/mm/util.c b/mm/util.c
index 49e29f751b5..b68d3d7d035 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -11,7 +11,7 @@
  */
 void *kzalloc(size_t size, gfp_t flags)
 {
-	void *ret = kmalloc(size, flags);
+	void *ret = ____kmalloc(size, flags);
 	if (ret)
 		memset(ret, 0, size);
 	return ret;
@@ -33,7 +33,7 @@ char *kstrdup(const char *s, gfp_t gfp)
 		return NULL;
 
 	len = strlen(s) + 1;
-	buf = kmalloc(len, gfp);
+	buf = ____kmalloc(len, gfp);
 	if (buf)
 		memcpy(buf, s, len);
 	return buf;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index c9f87845453..09464fa8d72 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -149,7 +149,7 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
 
 	/* Get the DATA. Size must match skb_add_mtu(). */
 	size = SKB_DATA_ALIGN(size);
-	data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
+	data = ____kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
 	if (!data)
 		goto nodata;
 
-- 
cgit v1.2.3-70-g09d2


From 0a945022778f100115d0cb6234eb28fc1b15ccaf Mon Sep 17 00:00:00 2001
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Date: Tue, 28 Mar 2006 01:56:37 -0800
Subject: [PATCH] for_each_possible_cpu: fixes for generic part

replaces for_each_cpu with for_each_possible_cpu().

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 block/ll_rw_blk.c            | 2 +-
 fs/file.c                    | 2 +-
 fs/proc/proc_misc.c          | 2 +-
 include/asm-generic/percpu.h | 2 +-
 include/linux/genhd.h        | 4 ++--
 include/linux/kernel_stat.h  | 2 +-
 init/main.c                  | 2 +-
 kernel/rcutorture.c          | 4 ++--
 kernel/sched.c               | 8 ++++----
 mm/slab.c                    | 4 ++--
 mm/swap.c                    | 2 +-
 11 files changed, 17 insertions(+), 17 deletions(-)

(limited to 'fs/proc/proc_misc.c')

diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 82469db2510..5a19e2eb571 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3514,7 +3514,7 @@ int __init blk_dev_init(void)
 	iocontext_cachep = kmem_cache_create("blkdev_ioc",
 			sizeof(struct io_context), 0, SLAB_PANIC, NULL, NULL);
 
-	for_each_cpu(i)
+	for_each_possible_cpu(i)
 		INIT_LIST_HEAD(&per_cpu(blk_cpu_done, i));
 
 	open_softirq(BLOCK_SOFTIRQ, blk_done_softirq, NULL);
diff --git a/fs/file.c b/fs/file.c
index bbc74331473..55f4e702256 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -373,6 +373,6 @@ static void __devinit fdtable_defer_list_init(int cpu)
 void __init files_defer_init(void)
 {
 	int i;
-	for_each_cpu(i)
+	for_each_possible_cpu(i)
 		fdtable_defer_list_init(i);
 }
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 1e9ea37d457..1edce0c34bf 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -534,7 +534,7 @@ static int show_stat(struct seq_file *p, void *v)
 	if (wall_to_monotonic.tv_nsec)
 		--jif;
 
-	for_each_cpu(i) {
+	for_each_possible_cpu(i) {
 		int j;
 
 		user = cputime64_add(user, kstat_cpu(i).cpustat.user);
diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
index 78cf45547e3..c0caf433a7d 100644
--- a/include/asm-generic/percpu.h
+++ b/include/asm-generic/percpu.h
@@ -19,7 +19,7 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
 #define percpu_modcopy(pcpudst, src, size)			\
 do {								\
 	unsigned int __i;					\
-	for_each_cpu(__i)					\
+	for_each_possible_cpu(__i)				\
 		memcpy((pcpudst)+__per_cpu_offset[__i],		\
 		       (src), (size));				\
 } while (0)
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 3c1b0294a74..10a27f29d69 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -152,14 +152,14 @@ struct disk_attribute {
 ({									\
 	typeof(gendiskp->dkstats->field) res = 0;			\
 	int i;								\
-	for_each_cpu(i)							\
+	for_each_possible_cpu(i)					\
 		res += per_cpu_ptr(gendiskp->dkstats, i)->field;	\
 	res;								\
 })
 
 static inline void disk_stat_set_all(struct gendisk *gendiskp, int value)	{
 	int i;
-	for_each_cpu(i)
+	for_each_possible_cpu(i)
 		memset(per_cpu_ptr(gendiskp->dkstats, i), value,
 				sizeof (struct disk_stats));
 }		
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index a484572c302..b46249082cc 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -46,7 +46,7 @@ static inline int kstat_irqs(int irq)
 {
 	int cpu, sum = 0;
 
-	for_each_cpu(cpu)
+	for_each_possible_cpu(cpu)
 		sum += kstat_cpu(cpu).irqs[irq];
 
 	return sum;
diff --git a/init/main.c b/init/main.c
index 64466ea1984..4a2f0898dda 100644
--- a/init/main.c
+++ b/init/main.c
@@ -341,7 +341,7 @@ static void __init setup_per_cpu_areas(void)
 #endif
 	ptr = alloc_bootmem(size * nr_possible_cpus);
 
-	for_each_cpu(i) {
+	for_each_possible_cpu(i) {
 		__per_cpu_offset[i] = ptr - __per_cpu_start;
 		memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
 		ptr += size;
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index b4b362b5baf..8154e7589d1 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -301,7 +301,7 @@ rcu_torture_printk(char *page)
 	long pipesummary[RCU_TORTURE_PIPE_LEN + 1] = { 0 };
 	long batchsummary[RCU_TORTURE_PIPE_LEN + 1] = { 0 };
 
-	for_each_cpu(cpu) {
+	for_each_possible_cpu(cpu) {
 		for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) {
 			pipesummary[i] += per_cpu(rcu_torture_count, cpu)[i];
 			batchsummary[i] += per_cpu(rcu_torture_batch, cpu)[i];
@@ -535,7 +535,7 @@ rcu_torture_init(void)
 	atomic_set(&n_rcu_torture_error, 0);
 	for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++)
 		atomic_set(&rcu_torture_wcount[i], 0);
-	for_each_cpu(cpu) {
+	for_each_possible_cpu(cpu) {
 		for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) {
 			per_cpu(rcu_torture_count, cpu)[i] = 0;
 			per_cpu(rcu_torture_batch, cpu)[i] = 0;
diff --git a/kernel/sched.c b/kernel/sched.c
index 7854ee516b9..a9ecac398bb 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1625,7 +1625,7 @@ unsigned long nr_uninterruptible(void)
 {
 	unsigned long i, sum = 0;
 
-	for_each_cpu(i)
+	for_each_possible_cpu(i)
 		sum += cpu_rq(i)->nr_uninterruptible;
 
 	/*
@@ -1642,7 +1642,7 @@ unsigned long long nr_context_switches(void)
 {
 	unsigned long long i, sum = 0;
 
-	for_each_cpu(i)
+	for_each_possible_cpu(i)
 		sum += cpu_rq(i)->nr_switches;
 
 	return sum;
@@ -1652,7 +1652,7 @@ unsigned long nr_iowait(void)
 {
 	unsigned long i, sum = 0;
 
-	for_each_cpu(i)
+	for_each_possible_cpu(i)
 		sum += atomic_read(&cpu_rq(i)->nr_iowait);
 
 	return sum;
@@ -6080,7 +6080,7 @@ void __init sched_init(void)
 	runqueue_t *rq;
 	int i, j, k;
 
-	for_each_cpu(i) {
+	for_each_possible_cpu(i) {
 		prio_array_t *array;
 
 		rq = cpu_rq(i);
diff --git a/mm/slab.c b/mm/slab.c
index 681837499d7..4cbf8bb1355 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3311,7 +3311,7 @@ void *__alloc_percpu(size_t size)
 	 * and we have no way of figuring out how to fix the array
 	 * that we have allocated then....
 	 */
-	for_each_cpu(i) {
+	for_each_possible_cpu(i) {
 		int node = cpu_to_node(i);
 
 		if (node_online(node))
@@ -3398,7 +3398,7 @@ void free_percpu(const void *objp)
 	/*
 	 * We allocate for all cpus so we cannot use for online cpu here.
 	 */
-	for_each_cpu(i)
+	for_each_possible_cpu(i)
 	    kfree(p->ptrs[i]);
 	kfree(p);
 }
diff --git a/mm/swap.c b/mm/swap.c
index 91b7e2026f6..88895c249bc 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -512,7 +512,7 @@ long percpu_counter_sum(struct percpu_counter *fbc)
 
 	spin_lock(&fbc->lock);
 	ret = fbc->count;
-	for_each_cpu(cpu) {
+	for_each_possible_cpu(cpu) {
 		long *pcount = per_cpu_ptr(fbc->counters, cpu);
 		ret += *pcount;
 	}
-- 
cgit v1.2.3-70-g09d2


From 99ac48f54a91d02140c497edc31dc57d4bc5c85d Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@infradead.org>
Date: Tue, 28 Mar 2006 01:56:41 -0800
Subject: [PATCH] mark f_ops const in the inode

Mark the f_ops members of inodes as const, as well as fix the
ripple-through this causes by places that copy this f_ops and then "do
stuff" with it.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/powerpc/platforms/cell/spufs/inode.c |  2 +-
 arch/ppc/kernel/ppc_htab.c                |  2 +-
 drivers/char/drm/drm_fops.c               |  2 +-
 drivers/char/drm/i810_dma.c               |  2 +-
 drivers/char/drm/i830_dma.c               |  2 +-
 drivers/char/mem.c                        |  2 +-
 drivers/char/misc.c                       |  2 +-
 drivers/input/input.c                     |  2 +-
 drivers/isdn/capi/kcapi_proc.c            |  2 +-
 drivers/media/dvb/dvb-core/dvbdev.c       |  2 +-
 drivers/media/video/videodev.c            |  2 +-
 drivers/message/i2o/i2o_proc.c            |  2 +-
 drivers/oprofile/oprofilefs.c             |  6 +++---
 drivers/telephony/phonedev.c              |  2 +-
 drivers/usb/core/file.c                   |  6 +++---
 drivers/usb/gadget/inode.c                |  6 +++---
 fs/char_dev.c                             |  4 ++--
 fs/debugfs/inode.c                        |  2 +-
 fs/inode.c                                |  2 +-
 fs/nfsd/vfs.c                             |  2 +-
 fs/proc/generic.c                         |  2 +-
 fs/proc/internal.h                        |  2 +-
 fs/proc/proc_misc.c                       |  2 +-
 fs/select.c                               |  2 +-
 include/linux/cdev.h                      |  4 ++--
 include/linux/debugfs.h                   |  2 +-
 include/linux/fs.h                        |  6 +++---
 include/linux/input.h                     |  2 +-
 include/linux/miscdevice.h                |  2 +-
 include/linux/oprofile.h                  |  4 ++--
 include/linux/proc_fs.h                   |  4 ++--
 include/linux/sound.h                     | 12 ++++++------
 include/linux/sunrpc/stats.h              |  4 ++--
 include/linux/usb.h                       |  2 +-
 include/linux/videodev2.h                 |  2 +-
 include/sound/core.h                      |  6 +++---
 net/sunrpc/rpc_pipe.c                     |  2 +-
 net/sunrpc/stats.c                        |  4 ++--
 sound/core/init.c                         |  3 ++-
 sound/core/sound.c                        |  4 ++--
 sound/core/sound_oss.c                    |  2 +-
 sound/sound_core.c                        | 22 +++++++++++-----------
 42 files changed, 75 insertions(+), 74 deletions(-)

(limited to 'fs/proc/proc_misc.c')

diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index b3962c3a034..5be40aa483f 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -103,7 +103,7 @@ spufs_setattr(struct dentry *dentry, struct iattr *attr)
 
 static int
 spufs_new_file(struct super_block *sb, struct dentry *dentry,
-		struct file_operations *fops, int mode,
+		const struct file_operations *fops, int mode,
 		struct spu_context *ctx)
 {
 	static struct inode_operations spufs_file_iops = {
diff --git a/arch/ppc/kernel/ppc_htab.c b/arch/ppc/kernel/ppc_htab.c
index 2f5c7650274..9b84bffdefc 100644
--- a/arch/ppc/kernel/ppc_htab.c
+++ b/arch/ppc/kernel/ppc_htab.c
@@ -52,7 +52,7 @@ static int ppc_htab_open(struct inode *inode, struct file *file)
 	return single_open(file, ppc_htab_show, NULL);
 }
 
-struct file_operations ppc_htab_operations = {
+const struct file_operations ppc_htab_operations = {
 	.open		= ppc_htab_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/drivers/char/drm/drm_fops.c b/drivers/char/drm/drm_fops.c
index 641f7633878..b7f7951c458 100644
--- a/drivers/char/drm/drm_fops.c
+++ b/drivers/char/drm/drm_fops.c
@@ -175,7 +175,7 @@ int drm_stub_open(struct inode *inode, struct file *filp)
 	drm_device_t *dev = NULL;
 	int minor = iminor(inode);
 	int err = -ENODEV;
-	struct file_operations *old_fops;
+	const struct file_operations *old_fops;
 
 	DRM_DEBUG("\n");
 
diff --git a/drivers/char/drm/i810_dma.c b/drivers/char/drm/i810_dma.c
index ae0aa6d7e0b..c658dde3633 100644
--- a/drivers/char/drm/i810_dma.c
+++ b/drivers/char/drm/i810_dma.c
@@ -126,7 +126,7 @@ static int i810_map_buffer(drm_buf_t * buf, struct file *filp)
 	drm_device_t *dev = priv->head->dev;
 	drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 	drm_i810_private_t *dev_priv = dev->dev_private;
-	struct file_operations *old_fops;
+	const struct file_operations *old_fops;
 	int retcode = 0;
 
 	if (buf_priv->currently_mapped == I810_BUF_MAPPED)
diff --git a/drivers/char/drm/i830_dma.c b/drivers/char/drm/i830_dma.c
index 163f2cbfe60..b0f815d8cea 100644
--- a/drivers/char/drm/i830_dma.c
+++ b/drivers/char/drm/i830_dma.c
@@ -128,7 +128,7 @@ static int i830_map_buffer(drm_buf_t * buf, struct file *filp)
 	drm_device_t *dev = priv->head->dev;
 	drm_i830_buf_priv_t *buf_priv = buf->dev_private;
 	drm_i830_private_t *dev_priv = dev->dev_private;
-	struct file_operations *old_fops;
+	const struct file_operations *old_fops;
 	unsigned long virtual;
 	int retcode = 0;
 
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 5245ba1649e..66719f9d294 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -899,7 +899,7 @@ static const struct {
 	unsigned int		minor;
 	char			*name;
 	umode_t			mode;
-	struct file_operations	*fops;
+	const struct file_operations	*fops;
 } devlist[] = { /* list of minor devices */
 	{1, "mem",     S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
 	{2, "kmem",    S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 3e4c0414a01..96eb2a709e2 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -129,7 +129,7 @@ static int misc_open(struct inode * inode, struct file * file)
 	int minor = iminor(inode);
 	struct miscdevice *c;
 	int err = -ENODEV;
-	struct file_operations *old_fops, *new_fops = NULL;
+	const struct file_operations *old_fops, *new_fops = NULL;
 	
 	down(&misc_sem);
 	
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 4fe3da3c667..f8af0945964 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -923,7 +923,7 @@ void input_unregister_handler(struct input_handler *handler)
 static int input_open_file(struct inode *inode, struct file *file)
 {
 	struct input_handler *handler = input_table[iminor(inode) >> 5];
-	struct file_operations *old_fops, *new_fops = NULL;
+	const struct file_operations *old_fops, *new_fops = NULL;
 	int err;
 
 	/* No load-on-demand here? */
diff --git a/drivers/isdn/capi/kcapi_proc.c b/drivers/isdn/capi/kcapi_proc.c
index 2cc8b27e4c3..ca9dc00a45c 100644
--- a/drivers/isdn/capi/kcapi_proc.c
+++ b/drivers/isdn/capi/kcapi_proc.c
@@ -233,7 +233,7 @@ static struct file_operations proc_applstats_ops = {
 };
 
 static void
-create_seq_entry(char *name, mode_t mode, struct file_operations *f)
+create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
 {
 	struct proc_dir_entry *entry;
 	entry = create_proc_entry(name, mode, NULL);
diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c
index 54f8b95717b..96fe0ecae25 100644
--- a/drivers/media/dvb/dvb-core/dvbdev.c
+++ b/drivers/media/dvb/dvb-core/dvbdev.c
@@ -86,7 +86,7 @@ static int dvb_device_open(struct inode *inode, struct file *file)
 
 	if (dvbdev && dvbdev->fops) {
 		int err = 0;
-		struct file_operations *old_fops;
+		const struct file_operations *old_fops;
 
 		file->private_data = dvbdev;
 		old_fops = file->f_op;
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index 75e3d41382f..5f87dd5f1d0 100644
--- a/drivers/media/video/videodev.c
+++ b/drivers/media/video/videodev.c
@@ -97,7 +97,7 @@ static int video_open(struct inode *inode, struct file *file)
 	unsigned int minor = iminor(inode);
 	int err = 0;
 	struct video_device *vfl;
-	struct file_operations *old_fops;
+	const struct file_operations *old_fops;
 
 	if(minor>=VIDEO_NUM_DEVICES)
 		return -ENODEV;
diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c
index 2a0c42b8cda..3d2e76eea93 100644
--- a/drivers/message/i2o/i2o_proc.c
+++ b/drivers/message/i2o/i2o_proc.c
@@ -56,7 +56,7 @@
 typedef struct _i2o_proc_entry_t {
 	char *name;		/* entry name */
 	mode_t mode;		/* mode */
-	struct file_operations *fops;	/* open function */
+	const struct file_operations *fops;	/* open function */
 } i2o_proc_entry;
 
 /* global I2O /proc/i2o entry */
diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c
index d6bae699749..b62da9b0cbf 100644
--- a/drivers/oprofile/oprofilefs.c
+++ b/drivers/oprofile/oprofilefs.c
@@ -130,7 +130,7 @@ static struct file_operations ulong_ro_fops = {
 
 
 static struct dentry * __oprofilefs_create_file(struct super_block * sb,
-	struct dentry * root, char const * name, struct file_operations * fops,
+	struct dentry * root, char const * name, const struct file_operations * fops,
 	int perm)
 {
 	struct dentry * dentry;
@@ -203,7 +203,7 @@ int oprofilefs_create_ro_atomic(struct super_block * sb, struct dentry * root,
 
  
 int oprofilefs_create_file(struct super_block * sb, struct dentry * root,
-	char const * name, struct file_operations * fops)
+	char const * name, const struct file_operations * fops)
 {
 	if (!__oprofilefs_create_file(sb, root, name, fops, 0644))
 		return -EFAULT;
@@ -212,7 +212,7 @@ int oprofilefs_create_file(struct super_block * sb, struct dentry * root,
 
 
 int oprofilefs_create_file_perm(struct super_block * sb, struct dentry * root,
-	char const * name, struct file_operations * fops, int perm)
+	char const * name, const struct file_operations * fops, int perm)
 {
 	if (!__oprofilefs_create_file(sb, root, name, fops, perm))
 		return -EFAULT;
diff --git a/drivers/telephony/phonedev.c b/drivers/telephony/phonedev.c
index 7a6db1c5c8c..e166fffea86 100644
--- a/drivers/telephony/phonedev.c
+++ b/drivers/telephony/phonedev.c
@@ -49,7 +49,7 @@ static int phone_open(struct inode *inode, struct file *file)
 	unsigned int minor = iminor(inode);
 	int err = 0;
 	struct phone_device *p;
-	struct file_operations *old_fops, *new_fops = NULL;
+	const struct file_operations *old_fops, *new_fops = NULL;
 
 	if (minor >= PHONE_NUM_DEVICES)
 		return -ENODEV;
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 37b13368c81..b263a54a13c 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -24,15 +24,15 @@
 #include "usb.h"
 
 #define MAX_USB_MINORS	256
-static struct file_operations *usb_minors[MAX_USB_MINORS];
+static const struct file_operations *usb_minors[MAX_USB_MINORS];
 static DEFINE_SPINLOCK(minor_lock);
 
 static int usb_open(struct inode * inode, struct file * file)
 {
 	int minor = iminor(inode);
-	struct file_operations *c;
+	const struct file_operations *c;
 	int err = -ENODEV;
-	struct file_operations *old_fops, *new_fops = NULL;
+	const struct file_operations *old_fops, *new_fops = NULL;
 
 	spin_lock (&minor_lock);
 	c = usb_minors[minor];
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index b44cfda76b6..3f618ce6998 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1581,7 +1581,7 @@ restart:
 
 static struct inode *
 gadgetfs_create_file (struct super_block *sb, char const *name,
-		void *data, struct file_operations *fops,
+		void *data, const struct file_operations *fops,
 		struct dentry **dentry_p);
 
 static int activate_ep_files (struct dev_data *dev)
@@ -1955,7 +1955,7 @@ module_param (default_perm, uint, 0644);
 
 static struct inode *
 gadgetfs_make_inode (struct super_block *sb,
-		void *data, struct file_operations *fops,
+		void *data, const struct file_operations *fops,
 		int mode)
 {
 	struct inode *inode = new_inode (sb);
@@ -1979,7 +1979,7 @@ gadgetfs_make_inode (struct super_block *sb,
  */
 static struct inode *
 gadgetfs_create_file (struct super_block *sb, char const *name,
-		void *data, struct file_operations *fops,
+		void *data, const struct file_operations *fops,
 		struct dentry **dentry_p)
 {
 	struct dentry	*dentry;
diff --git a/fs/char_dev.c b/fs/char_dev.c
index 8c6eb04d31e..b53dffa46ba 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -250,7 +250,7 @@ int alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count,
 }
 
 int register_chrdev(unsigned int major, const char *name,
-		    struct file_operations *fops)
+		    const struct file_operations *fops)
 {
 	struct char_device_struct *cd;
 	struct cdev *cdev;
@@ -473,7 +473,7 @@ struct cdev *cdev_alloc(void)
 	return p;
 }
 
-void cdev_init(struct cdev *cdev, struct file_operations *fops)
+void cdev_init(struct cdev *cdev, const struct file_operations *fops)
 {
 	memset(cdev, 0, sizeof *cdev);
 	INIT_LIST_HEAD(&cdev->list);
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index d4f1a2cddd4..85d166cdcae 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -191,7 +191,7 @@ static int debugfs_create_by_name(const char *name, mode_t mode,
  */
 struct dentry *debugfs_create_file(const char *name, mode_t mode,
 				   struct dentry *parent, void *data,
-				   struct file_operations *fops)
+				   const struct file_operations *fops)
 {
 	struct dentry *dentry = NULL;
 	int error;
diff --git a/fs/inode.c b/fs/inode.c
index 1fddf2803af..32b7c337502 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -104,7 +104,7 @@ static struct inode *alloc_inode(struct super_block *sb)
 {
 	static struct address_space_operations empty_aops;
 	static struct inode_operations empty_iops;
-	static struct file_operations empty_fops;
+	static const struct file_operations empty_fops;
 	struct inode *inode;
 
 	if (sb->s_op->alloc_inode)
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 5320e5afadd..31018333dc3 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -706,7 +706,7 @@ nfsd_close(struct file *filp)
  * after it.
  */
 static inline int nfsd_dosync(struct file *filp, struct dentry *dp,
-			      struct file_operations *fop)
+			      const struct file_operations *fop)
 {
 	struct inode *inode = dp->d_inode;
 	int (*fsync) (struct file *, struct dentry *, int);
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 47b7a20d45e..4ba03009cf7 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -560,7 +560,7 @@ static void proc_kill_inodes(struct proc_dir_entry *de)
 		struct file * filp = list_entry(p, struct file, f_u.fu_list);
 		struct dentry * dentry = filp->f_dentry;
 		struct inode * inode;
-		struct file_operations *fops;
+		const struct file_operations *fops;
 
 		if (dentry->d_op != &proc_dentry_operations)
 			continue;
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 95a1cf32b83..0502f17b860 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -30,7 +30,7 @@ do {						\
 
 #endif
 
-extern void create_seq_entry(char *name, mode_t mode, struct file_operations *f);
+extern void create_seq_entry(char *name, mode_t mode, const struct file_operations *f);
 extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
 extern int proc_tid_stat(struct task_struct *,  char *);
 extern int proc_tgid_stat(struct task_struct *, char *);
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 1edce0c34bf..ef5a3323f4b 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -731,7 +731,7 @@ static struct file_operations proc_sysrq_trigger_operations = {
 
 struct proc_dir_entry *proc_root_kcore;
 
-void create_seq_entry(char *name, mode_t mode, struct file_operations *f)
+void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
 {
 	struct proc_dir_entry *entry;
 	entry = create_proc_entry(name, mode, NULL);
diff --git a/fs/select.c b/fs/select.c
index 05cd199a112..b3a3a1326af 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -220,7 +220,7 @@ int do_select(int n, fd_set_bits *fds, s64 *timeout)
 		for (i = 0; i < n; ++rinp, ++routp, ++rexp) {
 			unsigned long in, out, ex, all_bits, bit = 1, mask, j;
 			unsigned long res_in = 0, res_out = 0, res_ex = 0;
-			struct file_operations *f_op = NULL;
+			const struct file_operations *f_op = NULL;
 			struct file *file = NULL;
 
 			in = *inp++; out = *outp++; ex = *exp++;
diff --git a/include/linux/cdev.h b/include/linux/cdev.h
index 8da37e29cb8..2216638962d 100644
--- a/include/linux/cdev.h
+++ b/include/linux/cdev.h
@@ -5,13 +5,13 @@
 struct cdev {
 	struct kobject kobj;
 	struct module *owner;
-	struct file_operations *ops;
+	const struct file_operations *ops;
 	struct list_head list;
 	dev_t dev;
 	unsigned int count;
 };
 
-void cdev_init(struct cdev *, struct file_operations *);
+void cdev_init(struct cdev *, const struct file_operations *);
 
 struct cdev *cdev_alloc(void);
 
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 4b0428e335b..176e2d37157 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -29,7 +29,7 @@ struct debugfs_blob_wrapper {
 #if defined(CONFIG_DEBUG_FS)
 struct dentry *debugfs_create_file(const char *name, mode_t mode,
 				   struct dentry *parent, void *data,
-				   struct file_operations *fops);
+				   const struct file_operations *fops);
 
 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 680d913350e..ef355bc7371 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -496,7 +496,7 @@ struct inode {
 	struct mutex		i_mutex;
 	struct rw_semaphore	i_alloc_sem;
 	struct inode_operations	*i_op;
-	struct file_operations	*i_fop;	/* former ->i_op->default_file_ops */
+	const struct file_operations	*i_fop;	/* former ->i_op->default_file_ops */
 	struct super_block	*i_sb;
 	struct file_lock	*i_flock;
 	struct address_space	*i_mapping;
@@ -636,7 +636,7 @@ struct file {
 	} f_u;
 	struct dentry		*f_dentry;
 	struct vfsmount         *f_vfsmnt;
-	struct file_operations	*f_op;
+	const struct file_operations	*f_op;
 	atomic_t		f_count;
 	unsigned int 		f_flags;
 	mode_t			f_mode;
@@ -1414,7 +1414,7 @@ extern void bd_release_from_disk(struct block_device *, struct gendisk *);
 extern int alloc_chrdev_region(dev_t *, unsigned, unsigned, const char *);
 extern int register_chrdev_region(dev_t, unsigned, const char *);
 extern int register_chrdev(unsigned int, const char *,
-			   struct file_operations *);
+			   const struct file_operations *);
 extern int unregister_chrdev(unsigned int, const char *);
 extern void unregister_chrdev_region(dev_t, unsigned);
 extern int chrdev_open(struct inode *, struct file *);
diff --git a/include/linux/input.h b/include/linux/input.h
index 6d4cc3c110d..1d4e341b72e 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -957,7 +957,7 @@ struct input_handler {
 	struct input_handle* (*connect)(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id);
 	void (*disconnect)(struct input_handle *handle);
 
-	struct file_operations *fops;
+	const struct file_operations *fops;
 	int minor;
 	char *name;
 
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 14ceebfc1ef..5b584dafb5a 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -36,7 +36,7 @@ struct class_device;
 struct miscdevice  {
 	int minor;
 	const char *name;
-	struct file_operations *fops;
+	const struct file_operations *fops;
 	struct list_head list;
 	struct device *dev;
 	struct class_device *class;
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index b5b3197dfd4..0d514b25245 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -84,10 +84,10 @@ void oprofile_add_trace(unsigned long eip);
  * the specified file operations.
  */
 int oprofilefs_create_file(struct super_block * sb, struct dentry * root,
-	char const * name, struct file_operations * fops);
+	char const * name, const struct file_operations * fops);
 
 int oprofilefs_create_file_perm(struct super_block * sb, struct dentry * root,
-	char const * name, struct file_operations * fops, int perm);
+	char const * name, const struct file_operations * fops, int perm);
  
 /** Create a file for read/write access to an unsigned long. */
 int oprofilefs_create_ulong(struct super_block * sb, struct dentry * root,
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index cb224cf653b..6d03d025fcd 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -58,7 +58,7 @@ struct proc_dir_entry {
 	gid_t gid;
 	loff_t size;
 	struct inode_operations * proc_iops;
-	struct file_operations * proc_fops;
+	const struct file_operations * proc_fops;
 	get_info_t *get_info;
 	struct module *owner;
 	struct proc_dir_entry *next, *parent, *subdir;
@@ -189,7 +189,7 @@ static inline struct proc_dir_entry *proc_net_create(const char *name,
 }
 
 static inline struct proc_dir_entry *proc_net_fops_create(const char *name,
-	mode_t mode, struct file_operations *fops)
+	mode_t mode, const struct file_operations *fops)
 {
 	struct proc_dir_entry *res = create_proc_entry(name, mode, proc_net);
 	if (res)
diff --git a/include/linux/sound.h b/include/linux/sound.h
index 72b9af4c3fd..f63d8342ffa 100644
--- a/include/linux/sound.h
+++ b/include/linux/sound.h
@@ -30,12 +30,12 @@
  */
  
 struct device;
-extern int register_sound_special(struct file_operations *fops, int unit);
-extern int register_sound_special_device(struct file_operations *fops, int unit, struct device *dev);
-extern int register_sound_mixer(struct file_operations *fops, int dev);
-extern int register_sound_midi(struct file_operations *fops, int dev);
-extern int register_sound_dsp(struct file_operations *fops, int dev);
-extern int register_sound_synth(struct file_operations *fops, int dev);
+extern int register_sound_special(const struct file_operations *fops, int unit);
+extern int register_sound_special_device(const struct file_operations *fops, int unit, struct device *dev);
+extern int register_sound_mixer(const struct file_operations *fops, int dev);
+extern int register_sound_midi(const struct file_operations *fops, int dev);
+extern int register_sound_dsp(const struct file_operations *fops, int dev);
+extern int register_sound_synth(const struct file_operations *fops, int dev);
 
 extern void unregister_sound_special(int unit);
 extern void unregister_sound_mixer(int unit);
diff --git a/include/linux/sunrpc/stats.h b/include/linux/sunrpc/stats.h
index 0d6ed3c8bdc..d93c24b47f3 100644
--- a/include/linux/sunrpc/stats.h
+++ b/include/linux/sunrpc/stats.h
@@ -50,7 +50,7 @@ struct proc_dir_entry *	rpc_proc_register(struct rpc_stat *);
 void			rpc_proc_unregister(const char *);
 void			rpc_proc_zero(struct rpc_program *);
 struct proc_dir_entry *	svc_proc_register(struct svc_stat *,
-					  struct file_operations *);
+					  const struct file_operations *);
 void			svc_proc_unregister(const char *);
 
 void			svc_seq_show(struct seq_file *,
@@ -65,7 +65,7 @@ static inline void rpc_proc_unregister(const char *p) {}
 static inline void rpc_proc_zero(struct rpc_program *p) {}
 
 static inline struct proc_dir_entry *svc_proc_register(struct svc_stat *s,
-						       struct file_operations *f) { return NULL; }
+						       const struct file_operations *f) { return NULL; }
 static inline void svc_proc_unregister(const char *p) {}
 
 static inline void svc_seq_show(struct seq_file *seq,
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 130d125fda1..e34e5e3dce5 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -615,7 +615,7 @@ extern struct bus_type usb_bus_type;
  */
 struct usb_class_driver {
 	char *name;
-	struct file_operations *fops;
+	const struct file_operations *fops;
 	int minor_base;
 };
 
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 2275bfec5b6..af2d6155d3f 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -75,7 +75,7 @@ struct video_device
 	int minor;
 
 	/* device ops + callbacks */
-	struct file_operations *fops;
+	const struct file_operations *fops;
 	void (*release)(struct video_device *vfd);
 
 
diff --git a/include/sound/core.h b/include/sound/core.h
index 144bdc2f217..7f32c12b4a0 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -186,7 +186,7 @@ struct snd_minor {
 	int type;			/* SNDRV_DEVICE_TYPE_XXX */
 	int card;			/* card number */
 	int device;			/* device number */
-	struct file_operations *f_ops;	/* file operations */
+	const struct file_operations *f_ops;	/* file operations */
 	void *private_data;		/* private data for f_ops->open */
 	char name[0];			/* device name (keep at the end of
 								structure) */
@@ -200,14 +200,14 @@ extern int snd_ecards_limit;
 void snd_request_card(int card);
 
 int snd_register_device(int type, struct snd_card *card, int dev,
-			struct file_operations *f_ops, void *private_data,
+			const struct file_operations *f_ops, void *private_data,
 			const char *name);
 int snd_unregister_device(int type, struct snd_card *card, int dev);
 void *snd_lookup_minor_data(unsigned int minor, int type);
 
 #ifdef CONFIG_SND_OSSEMUL
 int snd_register_oss_device(int type, struct snd_card *card, int dev,
-			    struct file_operations *f_ops, void *private_data,
+			    const struct file_operations *f_ops, void *private_data,
 			    const char *name);
 int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
 void *snd_lookup_oss_minor_data(unsigned int minor, int type);
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index aa4158be990..cc673dd8433 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -395,7 +395,7 @@ enum {
  */
 struct rpc_filelist {
 	char *name;
-	struct file_operations *i_fop;
+	const struct file_operations *i_fop;
 	int mode;
 };
 
diff --git a/net/sunrpc/stats.c b/net/sunrpc/stats.c
index 790941e8af4..dea529666d6 100644
--- a/net/sunrpc/stats.c
+++ b/net/sunrpc/stats.c
@@ -225,7 +225,7 @@ EXPORT_SYMBOL(rpc_print_iostats);
  * Register/unregister RPC proc files
  */
 static inline struct proc_dir_entry *
-do_register(const char *name, void *data, struct file_operations *fops)
+do_register(const char *name, void *data, const struct file_operations *fops)
 {
 	struct proc_dir_entry *ent;
 
@@ -253,7 +253,7 @@ rpc_proc_unregister(const char *name)
 }
 
 struct proc_dir_entry *
-svc_proc_register(struct svc_stat *statp, struct file_operations *fops)
+svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)
 {
 	return do_register(statp->program->pg_name, statp, fops);
 }
diff --git a/sound/core/init.c b/sound/core/init.c
index ad68761abba..5bb8a8b23d5 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -223,7 +223,8 @@ int snd_card_disconnect(struct snd_card *card)
 	struct snd_monitor_file *mfile;
 	struct file *file;
 	struct snd_shutdown_f_ops *s_f_ops;
-	struct file_operations *f_ops, *old_f_ops;
+	struct file_operations *f_ops;
+	const struct file_operations *old_f_ops;
 	int err;
 
 	spin_lock(&card->files_lock);
diff --git a/sound/core/sound.c b/sound/core/sound.c
index 4d28e521261..108e430b503 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -137,7 +137,7 @@ static int snd_open(struct inode *inode, struct file *file)
 {
 	unsigned int minor = iminor(inode);
 	struct snd_minor *mptr = NULL;
-	struct file_operations *old_fops;
+	const struct file_operations *old_fops;
 	int err = 0;
 
 	if (minor >= ARRAY_SIZE(snd_minors))
@@ -240,7 +240,7 @@ static int snd_kernel_minor(int type, struct snd_card *card, int dev)
  * Retrurns zero if successful, or a negative error code on failure.
  */
 int snd_register_device(int type, struct snd_card *card, int dev,
-			struct file_operations *f_ops, void *private_data,
+			const struct file_operations *f_ops, void *private_data,
 			const char *name)
 {
 	int minor;
diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c
index 4023d3b406d..9055c6de958 100644
--- a/sound/core/sound_oss.c
+++ b/sound/core/sound_oss.c
@@ -95,7 +95,7 @@ static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev)
 }
 
 int snd_register_oss_device(int type, struct snd_card *card, int dev,
-			    struct file_operations *f_ops, void *private_data,
+			    const struct file_operations *f_ops, void *private_data,
 			    const char *name)
 {
 	int minor = snd_oss_kernel_minor(type, card, dev);
diff --git a/sound/sound_core.c b/sound/sound_core.c
index 394b53e20cb..6f849720aef 100644
--- a/sound/sound_core.c
+++ b/sound/sound_core.c
@@ -53,7 +53,7 @@
 struct sound_unit
 {
 	int unit_minor;
-	struct file_operations *unit_fops;
+	const struct file_operations *unit_fops;
 	struct sound_unit *next;
 	char name[32];
 };
@@ -73,7 +73,7 @@ EXPORT_SYMBOL(sound_class);
  *	join into it. Called with the lock asserted
  */
 
-static int __sound_insert_unit(struct sound_unit * s, struct sound_unit **list, struct file_operations *fops, int index, int low, int top)
+static int __sound_insert_unit(struct sound_unit * s, struct sound_unit **list, const struct file_operations *fops, int index, int low, int top)
 {
 	int n=low;
 
@@ -153,7 +153,7 @@ static DEFINE_SPINLOCK(sound_loader_lock);
  *	list. Acquires locks as needed
  */
 
-static int sound_insert_unit(struct sound_unit **list, struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode, struct device *dev)
+static int sound_insert_unit(struct sound_unit **list, const struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode, struct device *dev)
 {
 	struct sound_unit *s = kmalloc(sizeof(*s), GFP_KERNEL);
 	int r;
@@ -237,7 +237,7 @@ static struct sound_unit *chains[SOUND_STEP];
  *	a negative error code is returned.
  */
  
-int register_sound_special_device(struct file_operations *fops, int unit,
+int register_sound_special_device(const struct file_operations *fops, int unit,
 				  struct device *dev)
 {
 	const int chain = unit % SOUND_STEP;
@@ -301,7 +301,7 @@ int register_sound_special_device(struct file_operations *fops, int unit,
  
 EXPORT_SYMBOL(register_sound_special_device);
 
-int register_sound_special(struct file_operations *fops, int unit)
+int register_sound_special(const struct file_operations *fops, int unit)
 {
 	return register_sound_special_device(fops, unit, NULL);
 }
@@ -318,7 +318,7 @@ EXPORT_SYMBOL(register_sound_special);
  *	number is returned, on failure a negative error code is returned.
  */
 
-int register_sound_mixer(struct file_operations *fops, int dev)
+int register_sound_mixer(const struct file_operations *fops, int dev)
 {
 	return sound_insert_unit(&chains[0], fops, dev, 0, 128,
 				 "mixer", S_IRUSR | S_IWUSR, NULL);
@@ -336,7 +336,7 @@ EXPORT_SYMBOL(register_sound_mixer);
  *	number is returned, on failure a negative error code is returned.
  */
 
-int register_sound_midi(struct file_operations *fops, int dev)
+int register_sound_midi(const struct file_operations *fops, int dev)
 {
 	return sound_insert_unit(&chains[2], fops, dev, 2, 130,
 				 "midi", S_IRUSR | S_IWUSR, NULL);
@@ -362,7 +362,7 @@ EXPORT_SYMBOL(register_sound_midi);
  *	and will always allocate them as a matching pair - eg dsp3/audio3
  */
 
-int register_sound_dsp(struct file_operations *fops, int dev)
+int register_sound_dsp(const struct file_operations *fops, int dev)
 {
 	return sound_insert_unit(&chains[3], fops, dev, 3, 131,
 				 "dsp", S_IWUSR | S_IRUSR, NULL);
@@ -381,7 +381,7 @@ EXPORT_SYMBOL(register_sound_dsp);
  */
 
 
-int register_sound_synth(struct file_operations *fops, int dev)
+int register_sound_synth(const struct file_operations *fops, int dev)
 {
 	return sound_insert_unit(&chains[9], fops, dev, 9, 137,
 				 "synth", S_IRUSR | S_IWUSR, NULL);
@@ -501,7 +501,7 @@ int soundcore_open(struct inode *inode, struct file *file)
 	int chain;
 	int unit = iminor(inode);
 	struct sound_unit *s;
-	struct file_operations *new_fops = NULL;
+	const struct file_operations *new_fops = NULL;
 
 	chain=unit&0x0F;
 	if(chain==4 || chain==5)	/* dsp/audio/dsp16 */
@@ -540,7 +540,7 @@ int soundcore_open(struct inode *inode, struct file *file)
 		 * switching ->f_op in the first place.
 		 */
 		int err = 0;
-		struct file_operations *old_fops = file->f_op;
+		const struct file_operations *old_fops = file->f_op;
 		file->f_op = new_fops;
 		spin_unlock(&sound_loader_lock);
 		if(file->f_op->open)
-- 
cgit v1.2.3-70-g09d2