X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Flibfs.c;h=7145ba7a48d06329de45384b3d3bda2c607cc1a1;hb=fe7fa31aa0749d7d247d21e1880f0c5aea15b158;hp=63c020e6589e5c81e296f2eae3b9a2e5917aeee0;hpb=0a0fc0ddbe732779366ab6b1b879f62195e65967;p=linux-2.6

diff --git a/fs/libfs.c b/fs/libfs.c
index 63c020e658..7145ba7a48 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -7,6 +7,8 @@
 #include <linux/pagemap.h>
 #include <linux/mount.h>
 #include <linux/vfs.h>
+#include <linux/mutex.h>
+
 #include <asm/uaccess.h>
 
 int simple_getattr(struct vfsmount *mnt, struct dentry *dentry,
@@ -177,7 +179,7 @@ ssize_t generic_read_dir(struct file *filp, char __user *buf, size_t siz, loff_t
 	return -EISDIR;
 }
 
-struct file_operations simple_dir_operations = {
+const struct file_operations simple_dir_operations = {
 	.open		= dcache_dir_open,
 	.release	= dcache_dir_close,
 	.llseek		= dcache_dir_lseek,
@@ -388,6 +390,7 @@ int simple_fill_super(struct super_block *s, int magic, struct tree_descr *files
 	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 	inode->i_op = &simple_dir_inode_operations;
 	inode->i_fop = &simple_dir_operations;
+	inode->i_nlink = 2;
 	root = d_alloc_root(inode);
 	if (!root) {
 		iput(inode);
@@ -529,7 +532,7 @@ struct simple_attr {
 	char set_buf[24];
 	void *data;
 	const char *fmt;	/* format for read operation */
-	struct semaphore sem;	/* protects access to these buffers */
+	struct mutex mutex;	/* protects access to these buffers */
 };
 
 /* simple_attr_open is called by an actual attribute open file operation
@@ -548,7 +551,7 @@ int simple_attr_open(struct inode *inode, struct file *file,
 	attr->set = set;
 	attr->data = inode->u.generic_ip;
 	attr->fmt = fmt;
-	init_MUTEX(&attr->sem);
+	mutex_init(&attr->mutex);
 
 	file->private_data = attr;
 
@@ -574,7 +577,7 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
 	if (!attr->get)
 		return -EACCES;
 
-	down(&attr->sem);
+	mutex_lock(&attr->mutex);
 	if (*ppos) /* continued read */
 		size = strlen(attr->get_buf);
 	else	  /* first read */
@@ -583,7 +586,7 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
 				 (unsigned long long)attr->get(attr->data));
 
 	ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size);
-	up(&attr->sem);
+	mutex_unlock(&attr->mutex);
 	return ret;
 }
 
@@ -601,7 +604,7 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
 	if (!attr->set)
 		return -EACCES;
 
-	down(&attr->sem);
+	mutex_lock(&attr->mutex);
 	ret = -EFAULT;
 	size = min(sizeof(attr->set_buf) - 1, len);
 	if (copy_from_user(attr->set_buf, buf, size))
@@ -612,7 +615,7 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
 	val = simple_strtol(attr->set_buf, NULL, 0);
 	attr->set(attr->data, val);
 out:
-	up(&attr->sem);
+	mutex_unlock(&attr->mutex);
 	return ret;
 }