From 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Fri, 25 Mar 2016 03:53:42 -0300
Subject: Linux-libre 4.5-gnu

---
 fs/afs/flock.c |  4 ++--
 fs/afs/inode.c |  1 +
 fs/afs/proc.c  | 25 ++++++-------------------
 fs/afs/super.c |  2 +-
 fs/afs/write.c |  4 ++--
 5 files changed, 12 insertions(+), 24 deletions(-)

(limited to 'fs/afs')

diff --git a/fs/afs/flock.c b/fs/afs/flock.c
index 4baf1d2b3..d91a9c9cf 100644
--- a/fs/afs/flock.c
+++ b/fs/afs/flock.c
@@ -483,7 +483,7 @@ static int afs_do_getlk(struct file *file, struct file_lock *fl)
 
 	fl->fl_type = F_UNLCK;
 
-	mutex_lock(&vnode->vfs_inode.i_mutex);
+	inode_lock(&vnode->vfs_inode);
 
 	/* check local lock records first */
 	ret = 0;
@@ -505,7 +505,7 @@ static int afs_do_getlk(struct file *file, struct file_lock *fl)
 	}
 
 error:
-	mutex_unlock(&vnode->vfs_inode.i_mutex);
+	inode_unlock(&vnode->vfs_inode);
 	_leave(" = %d [%hd]", ret, fl->fl_type);
 	return ret;
 }
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index e06f5a233..86cc7264c 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -56,6 +56,7 @@ static int afs_inode_map_status(struct afs_vnode *vnode, struct key *key)
 	case AFS_FTYPE_SYMLINK:
 		inode->i_mode	= S_IFLNK | vnode->status.mode;
 		inode->i_op	= &page_symlink_inode_operations;
+		inode_nohighmem(inode);
 		break;
 	default:
 		printk("kAFS: AFS vnode with undefined type\n");
diff --git a/fs/afs/proc.c b/fs/afs/proc.c
index 24a905b07..2853b4095 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -230,14 +230,9 @@ static ssize_t afs_proc_cells_write(struct file *file, const char __user *buf,
 	if (size <= 1 || size >= PAGE_SIZE)
 		return -EINVAL;
 
-	kbuf = kmalloc(size + 1, GFP_KERNEL);
-	if (!kbuf)
-		return -ENOMEM;
-
-	ret = -EFAULT;
-	if (copy_from_user(kbuf, buf, size) != 0)
-		goto done;
-	kbuf[size] = 0;
+	kbuf = memdup_user_nul(buf, size);
+	if (IS_ERR(kbuf))
+		return PTR_ERR(kbuf);
 
 	/* trim to first NL */
 	name = memchr(kbuf, '\n', size);
@@ -315,15 +310,9 @@ static ssize_t afs_proc_rootcell_write(struct file *file,
 	if (size <= 1 || size >= PAGE_SIZE)
 		return -EINVAL;
 
-	ret = -ENOMEM;
-	kbuf = kmalloc(size + 1, GFP_KERNEL);
-	if (!kbuf)
-		goto nomem;
-
-	ret = -EFAULT;
-	if (copy_from_user(kbuf, buf, size) != 0)
-		goto infault;
-	kbuf[size] = 0;
+	kbuf = memdup_user_nul(buf, size);
+	if (IS_ERR(kbuf))
+		return PTR_ERR(kbuf);
 
 	/* trim to first NL */
 	s = memchr(kbuf, '\n', size);
@@ -337,9 +326,7 @@ static ssize_t afs_proc_rootcell_write(struct file *file,
 	if (ret >= 0)
 		ret = size;	/* consume everything, always */
 
-infault:
 	kfree(kbuf);
-nomem:
 	_leave(" = %d", ret);
 	return ret;
 }
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 1fb4a5129..81afefe7d 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -91,7 +91,7 @@ int __init afs_fs_init(void)
 	afs_inode_cachep = kmem_cache_create("afs_inode_cache",
 					     sizeof(struct afs_vnode),
 					     0,
-					     SLAB_HWCACHE_ALIGN,
+					     SLAB_HWCACHE_ALIGN|SLAB_ACCOUNT,
 					     afs_i_init_once);
 	if (!afs_inode_cachep) {
 		printk(KERN_NOTICE "kAFS: Failed to allocate inode cache\n");
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 0714abcd7..dfef94f70 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -693,7 +693,7 @@ int afs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 	ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
 	if (ret)
 		return ret;
-	mutex_lock(&inode->i_mutex);
+	inode_lock(inode);
 
 	/* use a writeback record as a marker in the queue - when this reaches
 	 * the front of the queue, all the outstanding writes are either
@@ -735,7 +735,7 @@ int afs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 	afs_put_writeback(wb);
 	_leave(" = %d", ret);
 out:
-	mutex_unlock(&inode->i_mutex);
+	inode_unlock(inode);
 	return ret;
 }
 
-- 
cgit v1.2.3-54-g00ecf