---

yaml
---
r: 276453
b: refs/heads/master
c: fe6b91f
h: refs/heads/master
i:
  276451: c365b06
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 22c6b32d8d9b7adf903c19b7e108062431fdc6fc
+refs/heads/master: fe6b91f47080eb17d21cbf2a39311877d57f6938

trunk/arch/m68k/include/asm/unistd.h

@@ -350,12 +350,10 @@
 #define __NR_clock_adjtime	342
 #define __NR_syncfs		343
 #define __NR_setns		344
-#define __NR_process_vm_readv	345
-#define __NR_process_vm_writev	346
 
 #ifdef __KERNEL__
 
-#define NR_syscalls		347
+#define NR_syscalls		345
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR

trunk/arch/m68k/kernel/syscalltable.S

@@ -365,6 +365,4 @@ ENTRY(sys_call_table)
 	.long sys_clock_adjtime
 	.long sys_syncfs
 	.long sys_setns
-	.long sys_process_vm_readv	/* 345 */
-	.long sys_process_vm_writev
 

trunk/drivers/base/core.c

@@ -1743,8 +1743,10 @@ void device_shutdown(void)
 		 */
 		list_del_init(&dev->kobj.entry);
 		spin_unlock(&devices_kset->list_lock);
-		/* Disable all device's runtime power management */
-		pm_runtime_disable(dev);
+
+		/* Don't allow any more runtime suspends */
+		pm_runtime_get_noresume(dev);
+		pm_runtime_barrier(dev);
 
 		if (dev->bus && dev->bus->shutdown) {
 			dev_dbg(dev, "shutdown\n");

trunk/drivers/gpu/drm/i915/i915_gem.c

@@ -2026,13 +2026,8 @@ i915_wait_request(struct intel_ring_buffer *ring,
 	 * to handle this, the waiter on a request often wants an associated
 	 * buffer to have made it to the inactive list, and we would need
 	 * a separate wait queue to handle that.
-	 *
-	 * To avoid a recursion with the ilk VT-d workaround (that calls
-	 * gpu_idle when unbinding objects with interruptible==false) don't
-	 * retire requests in that case (because it might call unbind if the
-	 * active list holds the last reference to the object).
 	 */
-	if (ret == 0 && dev_priv->mm.interruptible)
+	if (ret == 0)
 		i915_gem_retire_requests_ring(ring);
 
 	return ret;

trunk/drivers/gpu/drm/radeon/radeon_encoders.c

@@ -233,12 +233,13 @@ u16 radeon_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
 		switch (radeon_encoder->encoder_id) {
 		case ENCODER_OBJECT_ID_TRAVIS:
 		case ENCODER_OBJECT_ID_NUTMEG:
-			return radeon_encoder->encoder_id;
+			return true;
 		default:
-			return ENCODER_OBJECT_ID_NONE;
+			return false;
 		}
 	}
-	return ENCODER_OBJECT_ID_NONE;
+
+	return false;
 }
 
 void radeon_panel_mode_fixup(struct drm_encoder *encoder,

trunk/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c

@@ -140,7 +140,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
 		goto out_clips;
 	}
 
-	clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
+	clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
 	if (clips == NULL) {
 		DRM_ERROR("Failed to allocate clip rect list.\n");
 		ret = -ENOMEM;
@@ -232,7 +232,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 		goto out_clips;
 	}
 
-	clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
+	clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
 	if (clips == NULL) {
 		DRM_ERROR("Failed to allocate clip rect list.\n");
 		ret = -ENOMEM;

trunk/drivers/of/irq.c

@@ -26,6 +26,11 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 
+/* For archs that don't support NO_IRQ (such as x86), provide a dummy value */
+#ifndef NO_IRQ
+#define NO_IRQ 0
+#endif
+
 /**
  * irq_of_parse_and_map - Parse and map an interrupt into linux virq space
  * @device: Device node of the device whose interrupt is to be mapped
@@ -39,7 +44,7 @@ unsigned int irq_of_parse_and_map(struct device_node *dev, int index)
 	struct of_irq oirq;
 
 	if (of_irq_map_one(dev, index, &oirq))
-		return 0;
+		return NO_IRQ;
 
 	return irq_create_of_mapping(oirq.controller, oirq.specifier,
 				     oirq.size);
@@ -340,7 +345,7 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
 
 	/* Only dereference the resource if both the
 	 * resource and the irq are valid. */
-	if (r && irq) {
+	if (r && irq != NO_IRQ) {
 		r->start = r->end = irq;
 		r->flags = IORESOURCE_IRQ;
 		r->name = dev->full_name;
@@ -358,7 +363,7 @@ int of_irq_count(struct device_node *dev)
 {
 	int nr = 0;
 
-	while (of_irq_to_resource(dev, nr, NULL))
+	while (of_irq_to_resource(dev, nr, NULL) != NO_IRQ)
 		nr++;
 
 	return nr;
@@ -378,7 +383,7 @@ int of_irq_to_resource_table(struct device_node *dev, struct resource *res,
 	int i;
 
 	for (i = 0; i < nr_irqs; i++, res++)
-		if (!of_irq_to_resource(dev, i, res))
+		if (of_irq_to_resource(dev, i, res) == NO_IRQ)
 			break;
 
 	return i;

trunk/fs/dcache.c

@@ -2439,14 +2439,16 @@ static int prepend_name(char **buffer, int *buflen, struct qstr *name)
 /**
  * prepend_path - Prepend path string to a buffer
  * @path: the dentry/vfsmount to report
- * @root: root vfsmnt/dentry
+ * @root: root vfsmnt/dentry (may be modified by this function)
  * @buffer: pointer to the end of the buffer
  * @buflen: pointer to buffer length
  *
  * Caller holds the rename_lock.
+ *
+ * If path is not reachable from the supplied root, then the value of
+ * root is changed (without modifying refcounts).
  */
-static int prepend_path(const struct path *path,
-			const struct path *root,
+static int prepend_path(const struct path *path, struct path *root,
 			char **buffer, int *buflen)
 {
 	struct dentry *dentry = path->dentry;
@@ -2481,10 +2483,10 @@ static int prepend_path(const struct path *path,
 		dentry = parent;
 	}
 
+out:
 	if (!error && !slash)
 		error = prepend(buffer, buflen, "/", 1);
 
-out:
 	br_read_unlock(vfsmount_lock);
 	return error;
 
@@ -2498,17 +2500,15 @@ static int prepend_path(const struct path *path,
 		WARN(1, "Root dentry has weird name <%.*s>\n",
 		     (int) dentry->d_name.len, dentry->d_name.name);
 	}
-	if (!slash)
-		error = prepend(buffer, buflen, "/", 1);
-	if (!error)
-		error = vfsmnt->mnt_ns ? 1 : 2;
+	root->mnt = vfsmnt;
+	root->dentry = dentry;
 	goto out;
 }
 
 /**
  * __d_path - return the path of a dentry
  * @path: the dentry/vfsmount to report
- * @root: root vfsmnt/dentry
+ * @root: root vfsmnt/dentry (may be modified by this function)
  * @buf: buffer to return value in
  * @buflen: buffer length
  *
@@ -2519,10 +2519,10 @@ static int prepend_path(const struct path *path,
  *
  * "buflen" should be positive.
  *
- * If the path is not reachable from the supplied root, return %NULL.
+ * If path is not reachable from the supplied root, then the value of
+ * root is changed (without modifying refcounts).
  */
-char *__d_path(const struct path *path,
-	       const struct path *root,
+char *__d_path(const struct path *path, struct path *root,
 	       char *buf, int buflen)
 {
 	char *res = buf + buflen;
@@ -2533,38 +2533,16 @@ char *__d_path(const struct path *path,
 	error = prepend_path(path, root, &res, &buflen);
 	write_sequnlock(&rename_lock);
 
-	if (error < 0)
-		return ERR_PTR(error);
-	if (error > 0)
-		return NULL;
-	return res;
-}
-
-char *d_absolute_path(const struct path *path,
-	       char *buf, int buflen)
-{
-	struct path root = {};
-	char *res = buf + buflen;
-	int error;
-
-	prepend(&res, &buflen, "\0", 1);
-	write_seqlock(&rename_lock);
-	error = prepend_path(path, &root, &res, &buflen);
-	write_sequnlock(&rename_lock);
-
-	if (error > 1)
-		error = -EINVAL;
-	if (error < 0)
+	if (error)
 		return ERR_PTR(error);
 	return res;
 }
 
 /*
  * same as __d_path but appends "(deleted)" for unlinked files.
  */
-static int path_with_deleted(const struct path *path,
-			     const struct path *root,
-			     char **buf, int *buflen)
+static int path_with_deleted(const struct path *path, struct path *root,
+				 char **buf, int *buflen)
 {
 	prepend(buf, buflen, "\0", 1);
 	if (d_unlinked(path->dentry)) {
@@ -2601,6 +2579,7 @@ char *d_path(const struct path *path, char *buf, int buflen)
 {
 	char *res = buf + buflen;
 	struct path root;
+	struct path tmp;
 	int error;
 
 	/*
@@ -2615,8 +2594,9 @@ char *d_path(const struct path *path, char *buf, int buflen)
 
 	get_fs_root(current->fs, &root);
 	write_seqlock(&rename_lock);
-	error = path_with_deleted(path, &root, &res, &buflen);
-	if (error < 0)
+	tmp = root;
+	error = path_with_deleted(path, &tmp, &res, &buflen);
+	if (error)
 		res = ERR_PTR(error);
 	write_sequnlock(&rename_lock);
 	path_put(&root);
@@ -2637,15 +2617,17 @@ char *d_path_with_unreachable(const struct path *path, char *buf, int buflen)
 {
 	char *res = buf + buflen;
 	struct path root;
+	struct path tmp;
 	int error;
 
 	if (path->dentry->d_op && path->dentry->d_op->d_dname)
 		return path->dentry->d_op->d_dname(path->dentry, buf, buflen);
 
 	get_fs_root(current->fs, &root);
 	write_seqlock(&rename_lock);
-	error = path_with_deleted(path, &root, &res, &buflen);
-	if (error > 0)
+	tmp = root;
+	error = path_with_deleted(path, &tmp, &res, &buflen);
+	if (!error && !path_equal(&tmp, &root))
 		error = prepend_unreachable(&res, &buflen);
 	write_sequnlock(&rename_lock);
 	path_put(&root);
@@ -2776,18 +2758,19 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size)
 	write_seqlock(&rename_lock);
 	if (!d_unlinked(pwd.dentry)) {
 		unsigned long len;
+		struct path tmp = root;
 		char *cwd = page + PAGE_SIZE;
 		int buflen = PAGE_SIZE;
 
 		prepend(&cwd, &buflen, "\0", 1);
-		error = prepend_path(&pwd, &root, &cwd, &buflen);
+		error = prepend_path(&pwd, &tmp, &cwd, &buflen);
 		write_sequnlock(&rename_lock);
 
-		if (error < 0)
+		if (error)
 			goto out;
 
 		/* Unreachable from current root */
-		if (error > 0) {
+		if (!path_equal(&tmp, &root)) {
 			error = prepend_unreachable(&cwd, &buflen);
 			if (error)
 				goto out;

trunk/fs/namespace.c

@@ -1048,12 +1048,15 @@ static int show_mountinfo(struct seq_file *m, void *v)
 	if (err)
 		goto out;
 	seq_putc(m, ' ');
-
-	/* mountpoints outside of chroot jail will give SEQ_SKIP on this */
-	err = seq_path_root(m, &mnt_path, &root, " \t\n\\");
-	if (err)
-		goto out;
-
+	seq_path_root(m, &mnt_path, &root, " \t\n\\");
+	if (root.mnt != p->root.mnt || root.dentry != p->root.dentry) {
+		/*
+		 * Mountpoint is outside root, discard that one.  Ugly,
+		 * but less so than trying to do that in iterator in a
+		 * race-free way (due to renames).
+		 */
+		return SEQ_SKIP;
+	}
 	seq_puts(m, mnt->mnt_flags & MNT_READONLY ? " ro" : " rw");
 	show_mnt_opts(m, mnt);
 
@@ -2773,8 +2776,3 @@ void kern_unmount(struct vfsmount *mnt)
 	}
 }
 EXPORT_SYMBOL(kern_unmount);
-
-bool our_mnt(struct vfsmount *mnt)
-{
-	return check_mnt(mnt);
-}

trunk/fs/seq_file.c

@@ -449,6 +449,8 @@ EXPORT_SYMBOL(seq_path);
 
 /*
  * Same as seq_path, but relative to supplied root.
+ *
+ * root may be changed, see __d_path().
  */
 int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
 		  char *esc)
@@ -461,8 +463,6 @@ int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
 		char *p;
 
 		p = __d_path(path, root, buf, size);
-		if (!p)
-			return SEQ_SKIP;
 		res = PTR_ERR(p);
 		if (!IS_ERR(p)) {
 			char *end = mangle_path(buf, p, esc);
@@ -474,7 +474,7 @@ int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
 	}
 	seq_commit(m, res);
 
-	return res < 0 && res != -ENAMETOOLONG ? res : 0;
+	return res < 0 ? res : 0;
 }
 
 /*

trunk/include/linux/dcache.h

@@ -339,8 +339,7 @@ extern int d_validate(struct dentry *, struct dentry *);
  */
 extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...);
 
-extern char *__d_path(const struct path *, const struct path *, char *, int);
-extern char *d_absolute_path(const struct path *, char *, int);
+extern char *__d_path(const struct path *path, struct path *root, char *, int);
 extern char *d_path(const struct path *, char *, int);
 extern char *d_path_with_unreachable(const struct path *, char *, int);
 extern char *dentry_path_raw(struct dentry *, char *, int);

trunk/include/linux/fs.h

@@ -1942,7 +1942,6 @@ extern int fd_statfs(int, struct kstatfs *);
 extern int statfs_by_dentry(struct dentry *, struct kstatfs *);
 extern int freeze_super(struct super_block *super);
 extern int thaw_super(struct super_block *super);
-extern bool our_mnt(struct vfsmount *mnt);
 
 extern int current_umask(void);